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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) ST-Ericsson SA 2010
4 *
5 * Authors: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
6 *
7 * This file is based on drivers/regulator/ab8500.c
8 *
9 * AB8500 external regulators
10 *
11 * ab8500-ext supports the following regulators:
12 * - VextSupply3
13 */
14#include <linux/init.h>
15#include <linux/kernel.h>
16#include <linux/err.h>
17#include <linux/module.h>
18#include <linux/of.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/abx500.h>
24#include <linux/mfd/abx500/ab8500.h>
25#include <linux/regulator/ab8500.h>
26
27static struct regulator_consumer_supply ab8500_vaux1_consumers[] = {
28 /* Main display, u8500 R3 uib */
29 REGULATOR_SUPPLY("vddi", "mcde_disp_sony_acx424akp.0"),
30 /* Main display, u8500 uib and ST uib */
31 REGULATOR_SUPPLY("vdd1", "samsung_s6d16d0.0"),
32 /* Secondary display, ST uib */
33 REGULATOR_SUPPLY("vdd1", "samsung_s6d16d0.1"),
34 /* SFH7741 proximity sensor */
35 REGULATOR_SUPPLY("vcc", "gpio-keys.0"),
36 /* BH1780GLS ambient light sensor */
37 REGULATOR_SUPPLY("vcc", "2-0029"),
38 /* lsm303dlh accelerometer */
39 REGULATOR_SUPPLY("vdd", "2-0018"),
40 /* lsm303dlhc accelerometer */
41 REGULATOR_SUPPLY("vdd", "2-0019"),
42 /* lsm303dlh magnetometer */
43 REGULATOR_SUPPLY("vdd", "2-001e"),
44 /* Rohm BU21013 Touchscreen devices */
45 REGULATOR_SUPPLY("avdd", "3-005c"),
46 REGULATOR_SUPPLY("avdd", "3-005d"),
47 /* Synaptics RMI4 Touchscreen device */
48 REGULATOR_SUPPLY("vdd", "3-004b"),
49 /* L3G4200D Gyroscope device */
50 REGULATOR_SUPPLY("vdd", "2-0068"),
51 /* Ambient light sensor device */
52 REGULATOR_SUPPLY("vdd", "3-0029"),
53 /* Pressure sensor device */
54 REGULATOR_SUPPLY("vdd", "2-005c"),
55 /* Cypress TrueTouch Touchscreen device */
56 REGULATOR_SUPPLY("vcpin", "spi8.0"),
57 /* Camera device */
58 REGULATOR_SUPPLY("vaux12v5", "mmio_camera"),
59};
60
61static struct regulator_consumer_supply ab8500_vaux2_consumers[] = {
62 /* On-board eMMC power */
63 REGULATOR_SUPPLY("vmmc", "sdi4"),
64 /* AB8500 audio codec */
65 REGULATOR_SUPPLY("vcc-N2158", "ab8500-codec.0"),
66 /* AB8500 accessory detect 1 */
67 REGULATOR_SUPPLY("vcc-N2158", "ab8500-acc-det.0"),
68 /* AB8500 Tv-out device */
69 REGULATOR_SUPPLY("vcc-N2158", "mcde_tv_ab8500.4"),
70 /* AV8100 HDMI device */
71 REGULATOR_SUPPLY("vcc-N2158", "av8100_hdmi.3"),
72};
73
74static struct regulator_consumer_supply ab8500_vaux3_consumers[] = {
75 REGULATOR_SUPPLY("v-SD-STM", "stm"),
76 /* External MMC slot power */
77 REGULATOR_SUPPLY("vmmc", "sdi0"),
78};
79
80static struct regulator_consumer_supply ab8500_vtvout_consumers[] = {
81 /* TV-out DENC supply */
82 REGULATOR_SUPPLY("vtvout", "ab8500-denc.0"),
83 /* Internal general-purpose ADC */
84 REGULATOR_SUPPLY("vddadc", "ab8500-gpadc.0"),
85 /* ADC for charger */
86 REGULATOR_SUPPLY("vddadc", "ab8500-charger.0"),
87 /* AB8500 Tv-out device */
88 REGULATOR_SUPPLY("vtvout", "mcde_tv_ab8500.4"),
89};
90
91static struct regulator_consumer_supply ab8500_vaud_consumers[] = {
92 /* AB8500 audio-codec main supply */
93 REGULATOR_SUPPLY("vaud", "ab8500-codec.0"),
94};
95
96static struct regulator_consumer_supply ab8500_vamic1_consumers[] = {
97 /* AB8500 audio-codec Mic1 supply */
98 REGULATOR_SUPPLY("vamic1", "ab8500-codec.0"),
99};
100
101static struct regulator_consumer_supply ab8500_vamic2_consumers[] = {
102 /* AB8500 audio-codec Mic2 supply */
103 REGULATOR_SUPPLY("vamic2", "ab8500-codec.0"),
104};
105
106static struct regulator_consumer_supply ab8500_vdmic_consumers[] = {
107 /* AB8500 audio-codec DMic supply */
108 REGULATOR_SUPPLY("vdmic", "ab8500-codec.0"),
109};
110
111static struct regulator_consumer_supply ab8500_vintcore_consumers[] = {
112 /* SoC core supply, no device */
113 REGULATOR_SUPPLY("v-intcore", NULL),
114 /* USB Transceiver */
115 REGULATOR_SUPPLY("vddulpivio18", "ab8500-usb.0"),
116 /* Handled by abx500 clk driver */
117 REGULATOR_SUPPLY("v-intcore", "abx500-clk.0"),
118};
119
120static struct regulator_consumer_supply ab8500_vana_consumers[] = {
121 /* DB8500 DSI */
122 REGULATOR_SUPPLY("vdddsi1v2", "mcde"),
123 REGULATOR_SUPPLY("vdddsi1v2", "b2r2_core"),
124 REGULATOR_SUPPLY("vdddsi1v2", "b2r2_1_core"),
125 REGULATOR_SUPPLY("vdddsi1v2", "dsilink.0"),
126 REGULATOR_SUPPLY("vdddsi1v2", "dsilink.1"),
127 REGULATOR_SUPPLY("vdddsi1v2", "dsilink.2"),
128 /* DB8500 CSI */
129 REGULATOR_SUPPLY("vddcsi1v2", "mmio_camera"),
130};
131
132/* ab8500 regulator register initialization */
133static struct ab8500_regulator_reg_init ab8500_reg_init[] = {
134 /*
135 * VanaRequestCtrl = HP/LP depending on VxRequest
136 * VextSupply1RequestCtrl = HP/LP depending on VxRequest
137 */
138 INIT_REGULATOR_REGISTER(AB8500_REGUREQUESTCTRL2, 0xf0, 0x00),
139 /*
140 * VextSupply2RequestCtrl = HP/LP depending on VxRequest
141 * VextSupply3RequestCtrl = HP/LP depending on VxRequest
142 * Vaux1RequestCtrl = HP/LP depending on VxRequest
143 * Vaux2RequestCtrl = HP/LP depending on VxRequest
144 */
145 INIT_REGULATOR_REGISTER(AB8500_REGUREQUESTCTRL3, 0xff, 0x00),
146 /*
147 * Vaux3RequestCtrl = HP/LP depending on VxRequest
148 * SwHPReq = Control through SWValid disabled
149 */
150 INIT_REGULATOR_REGISTER(AB8500_REGUREQUESTCTRL4, 0x07, 0x00),
151 /*
152 * VanaSysClkReq1HPValid = disabled
153 * Vaux1SysClkReq1HPValid = disabled
154 * Vaux2SysClkReq1HPValid = disabled
155 * Vaux3SysClkReq1HPValid = disabled
156 */
157 INIT_REGULATOR_REGISTER(AB8500_REGUSYSCLKREQ1HPVALID1, 0xe8, 0x00),
158 /*
159 * VextSupply1SysClkReq1HPValid = disabled
160 * VextSupply2SysClkReq1HPValid = disabled
161 * VextSupply3SysClkReq1HPValid = SysClkReq1 controlled
162 */
163 INIT_REGULATOR_REGISTER(AB8500_REGUSYSCLKREQ1HPVALID2, 0x70, 0x40),
164 /*
165 * VanaHwHPReq1Valid = disabled
166 * Vaux1HwHPreq1Valid = disabled
167 * Vaux2HwHPReq1Valid = disabled
168 * Vaux3HwHPReqValid = disabled
169 */
170 INIT_REGULATOR_REGISTER(AB8500_REGUHWHPREQ1VALID1, 0xe8, 0x00),
171 /*
172 * VextSupply1HwHPReq1Valid = disabled
173 * VextSupply2HwHPReq1Valid = disabled
174 * VextSupply3HwHPReq1Valid = disabled
175 */
176 INIT_REGULATOR_REGISTER(AB8500_REGUHWHPREQ1VALID2, 0x07, 0x00),
177 /*
178 * VanaHwHPReq2Valid = disabled
179 * Vaux1HwHPReq2Valid = disabled
180 * Vaux2HwHPReq2Valid = disabled
181 * Vaux3HwHPReq2Valid = disabled
182 */
183 INIT_REGULATOR_REGISTER(AB8500_REGUHWHPREQ2VALID1, 0xe8, 0x00),
184 /*
185 * VextSupply1HwHPReq2Valid = disabled
186 * VextSupply2HwHPReq2Valid = disabled
187 * VextSupply3HwHPReq2Valid = HWReq2 controlled
188 */
189 INIT_REGULATOR_REGISTER(AB8500_REGUHWHPREQ2VALID2, 0x07, 0x04),
190 /*
191 * VanaSwHPReqValid = disabled
192 * Vaux1SwHPReqValid = disabled
193 */
194 INIT_REGULATOR_REGISTER(AB8500_REGUSWHPREQVALID1, 0xa0, 0x00),
195 /*
196 * Vaux2SwHPReqValid = disabled
197 * Vaux3SwHPReqValid = disabled
198 * VextSupply1SwHPReqValid = disabled
199 * VextSupply2SwHPReqValid = disabled
200 * VextSupply3SwHPReqValid = disabled
201 */
202 INIT_REGULATOR_REGISTER(AB8500_REGUSWHPREQVALID2, 0x1f, 0x00),
203 /*
204 * SysClkReq2Valid1 = SysClkReq2 controlled
205 * SysClkReq3Valid1 = disabled
206 * SysClkReq4Valid1 = SysClkReq4 controlled
207 * SysClkReq5Valid1 = disabled
208 * SysClkReq6Valid1 = SysClkReq6 controlled
209 * SysClkReq7Valid1 = disabled
210 * SysClkReq8Valid1 = disabled
211 */
212 INIT_REGULATOR_REGISTER(AB8500_REGUSYSCLKREQVALID1, 0xfe, 0x2a),
213 /*
214 * SysClkReq2Valid2 = disabled
215 * SysClkReq3Valid2 = disabled
216 * SysClkReq4Valid2 = disabled
217 * SysClkReq5Valid2 = disabled
218 * SysClkReq6Valid2 = SysClkReq6 controlled
219 * SysClkReq7Valid2 = disabled
220 * SysClkReq8Valid2 = disabled
221 */
222 INIT_REGULATOR_REGISTER(AB8500_REGUSYSCLKREQVALID2, 0xfe, 0x20),
223 /*
224 * VTVoutEna = disabled
225 * Vintcore12Ena = disabled
226 * Vintcore12Sel = 1.25 V
227 * Vintcore12LP = inactive (HP)
228 * VTVoutLP = inactive (HP)
229 */
230 INIT_REGULATOR_REGISTER(AB8500_REGUMISC1, 0xfe, 0x10),
231 /*
232 * VaudioEna = disabled
233 * VdmicEna = disabled
234 * Vamic1Ena = disabled
235 * Vamic2Ena = disabled
236 */
237 INIT_REGULATOR_REGISTER(AB8500_VAUDIOSUPPLY, 0x1e, 0x00),
238 /*
239 * Vamic1_dzout = high-Z when Vamic1 is disabled
240 * Vamic2_dzout = high-Z when Vamic2 is disabled
241 */
242 INIT_REGULATOR_REGISTER(AB8500_REGUCTRL1VAMIC, 0x03, 0x00),
243 /*
244 * VPll = Hw controlled (NOTE! PRCMU bits)
245 * VanaRegu = force off
246 */
247 INIT_REGULATOR_REGISTER(AB8500_VPLLVANAREGU, 0x0f, 0x02),
248 /*
249 * VrefDDREna = disabled
250 * VrefDDRSleepMode = inactive (no pulldown)
251 */
252 INIT_REGULATOR_REGISTER(AB8500_VREFDDR, 0x03, 0x00),
253 /*
254 * VextSupply1Regu = force LP
255 * VextSupply2Regu = force OFF
256 * VextSupply3Regu = force HP (-> STBB2=LP and TPS=LP)
257 * ExtSupply2Bypass = ExtSupply12LPn ball is 0 when Ena is 0
258 * ExtSupply3Bypass = ExtSupply3LPn ball is 0 when Ena is 0
259 */
260 INIT_REGULATOR_REGISTER(AB8500_EXTSUPPLYREGU, 0xff, 0x13),
261 /*
262 * Vaux1Regu = force HP
263 * Vaux2Regu = force off
264 */
265 INIT_REGULATOR_REGISTER(AB8500_VAUX12REGU, 0x0f, 0x01),
266 /*
267 * Vaux3Regu = force off
268 */
269 INIT_REGULATOR_REGISTER(AB8500_VRF1VAUX3REGU, 0x03, 0x00),
270 /*
271 * Vaux1Sel = 2.8 V
272 */
273 INIT_REGULATOR_REGISTER(AB8500_VAUX1SEL, 0x0f, 0x0C),
274 /*
275 * Vaux2Sel = 2.9 V
276 */
277 INIT_REGULATOR_REGISTER(AB8500_VAUX2SEL, 0x0f, 0x0d),
278 /*
279 * Vaux3Sel = 2.91 V
280 */
281 INIT_REGULATOR_REGISTER(AB8500_VRF1VAUX3SEL, 0x07, 0x07),
282 /*
283 * VextSupply12LP = disabled (no LP)
284 */
285 INIT_REGULATOR_REGISTER(AB8500_REGUCTRL2SPARE, 0x01, 0x00),
286 /*
287 * Vaux1Disch = short discharge time
288 * Vaux2Disch = short discharge time
289 * Vaux3Disch = short discharge time
290 * Vintcore12Disch = short discharge time
291 * VTVoutDisch = short discharge time
292 * VaudioDisch = short discharge time
293 */
294 INIT_REGULATOR_REGISTER(AB8500_REGUCTRLDISCH, 0xfc, 0x00),
295 /*
296 * VanaDisch = short discharge time
297 * VdmicPullDownEna = pulldown disabled when Vdmic is disabled
298 * VdmicDisch = short discharge time
299 */
300 INIT_REGULATOR_REGISTER(AB8500_REGUCTRLDISCH2, 0x16, 0x00),
301};
302
303/* AB8500 regulators */
304static struct regulator_init_data ab8500_regulators[AB8500_NUM_REGULATORS] = {
305 /* supplies to the display/camera */
306 [AB8500_LDO_AUX1] = {
307 .supply_regulator = "ab8500-ext-supply3",
308 .constraints = {
309 .name = "V-DISPLAY",
310 .min_uV = 2800000,
311 .max_uV = 3300000,
312 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
313 REGULATOR_CHANGE_STATUS,
314 .boot_on = 1, /* display is on at boot */
315 },
316 .num_consumer_supplies = ARRAY_SIZE(ab8500_vaux1_consumers),
317 .consumer_supplies = ab8500_vaux1_consumers,
318 },
319 /* supplies to the on-board eMMC */
320 [AB8500_LDO_AUX2] = {
321 .supply_regulator = "ab8500-ext-supply3",
322 .constraints = {
323 .name = "V-eMMC1",
324 .min_uV = 1100000,
325 .max_uV = 3300000,
326 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
327 REGULATOR_CHANGE_STATUS |
328 REGULATOR_CHANGE_MODE,
329 .valid_modes_mask = REGULATOR_MODE_NORMAL |
330 REGULATOR_MODE_IDLE,
331 },
332 .num_consumer_supplies = ARRAY_SIZE(ab8500_vaux2_consumers),
333 .consumer_supplies = ab8500_vaux2_consumers,
334 },
335 /* supply for VAUX3, supplies to SDcard slots */
336 [AB8500_LDO_AUX3] = {
337 .supply_regulator = "ab8500-ext-supply3",
338 .constraints = {
339 .name = "V-MMC-SD",
340 .min_uV = 1100000,
341 .max_uV = 3300000,
342 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
343 REGULATOR_CHANGE_STATUS |
344 REGULATOR_CHANGE_MODE,
345 .valid_modes_mask = REGULATOR_MODE_NORMAL |
346 REGULATOR_MODE_IDLE,
347 },
348 .num_consumer_supplies = ARRAY_SIZE(ab8500_vaux3_consumers),
349 .consumer_supplies = ab8500_vaux3_consumers,
350 },
351 /* supply for tvout, gpadc, TVOUT LDO */
352 [AB8500_LDO_TVOUT] = {
353 .constraints = {
354 .name = "V-TVOUT",
355 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
356 },
357 .num_consumer_supplies = ARRAY_SIZE(ab8500_vtvout_consumers),
358 .consumer_supplies = ab8500_vtvout_consumers,
359 },
360 /* supply for ab8500-vaudio, VAUDIO LDO */
361 [AB8500_LDO_AUDIO] = {
362 .constraints = {
363 .name = "V-AUD",
364 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
365 },
366 .num_consumer_supplies = ARRAY_SIZE(ab8500_vaud_consumers),
367 .consumer_supplies = ab8500_vaud_consumers,
368 },
369 /* supply for v-anamic1 VAMic1-LDO */
370 [AB8500_LDO_ANAMIC1] = {
371 .constraints = {
372 .name = "V-AMIC1",
373 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
374 },
375 .num_consumer_supplies = ARRAY_SIZE(ab8500_vamic1_consumers),
376 .consumer_supplies = ab8500_vamic1_consumers,
377 },
378 /* supply for v-amic2, VAMIC2 LDO, reuse constants for AMIC1 */
379 [AB8500_LDO_ANAMIC2] = {
380 .constraints = {
381 .name = "V-AMIC2",
382 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
383 },
384 .num_consumer_supplies = ARRAY_SIZE(ab8500_vamic2_consumers),
385 .consumer_supplies = ab8500_vamic2_consumers,
386 },
387 /* supply for v-dmic, VDMIC LDO */
388 [AB8500_LDO_DMIC] = {
389 .constraints = {
390 .name = "V-DMIC",
391 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
392 },
393 .num_consumer_supplies = ARRAY_SIZE(ab8500_vdmic_consumers),
394 .consumer_supplies = ab8500_vdmic_consumers,
395 },
396 /* supply for v-intcore12, VINTCORE12 LDO */
397 [AB8500_LDO_INTCORE] = {
398 .constraints = {
399 .name = "V-INTCORE",
400 .min_uV = 1250000,
401 .max_uV = 1350000,
402 .input_uV = 1800000,
403 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
404 REGULATOR_CHANGE_STATUS |
405 REGULATOR_CHANGE_MODE |
406 REGULATOR_CHANGE_DRMS,
407 .valid_modes_mask = REGULATOR_MODE_NORMAL |
408 REGULATOR_MODE_IDLE,
409 },
410 .num_consumer_supplies = ARRAY_SIZE(ab8500_vintcore_consumers),
411 .consumer_supplies = ab8500_vintcore_consumers,
412 },
413 /* supply for U8500 CSI-DSI, VANA LDO */
414 [AB8500_LDO_ANA] = {
415 .constraints = {
416 .name = "V-CSI-DSI",
417 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
418 },
419 .num_consumer_supplies = ARRAY_SIZE(ab8500_vana_consumers),
420 .consumer_supplies = ab8500_vana_consumers,
421 },
422};
423
424/* supply for VextSupply3 */
425static struct regulator_consumer_supply ab8500_ext_supply3_consumers[] = {
426 /* SIM supply for 3 V SIM cards */
427 REGULATOR_SUPPLY("vinvsim", "sim-detect.0"),
428};
429
430/*
431 * AB8500 external regulators
432 */
433static struct regulator_init_data ab8500_ext_regulators[] = {
434 /* fixed Vbat supplies VSMPS1_EXT_1V8 */
435 [AB8500_EXT_SUPPLY1] = {
436 .constraints = {
437 .name = "ab8500-ext-supply1",
438 .min_uV = 1800000,
439 .max_uV = 1800000,
440 .initial_mode = REGULATOR_MODE_IDLE,
441 .boot_on = 1,
442 .always_on = 1,
443 },
444 },
445 /* fixed Vbat supplies VSMPS2_EXT_1V36 and VSMPS5_EXT_1V15 */
446 [AB8500_EXT_SUPPLY2] = {
447 .constraints = {
448 .name = "ab8500-ext-supply2",
449 .min_uV = 1360000,
450 .max_uV = 1360000,
451 },
452 },
453 /* fixed Vbat supplies VSMPS3_EXT_3V4 and VSMPS4_EXT_3V4 */
454 [AB8500_EXT_SUPPLY3] = {
455 .constraints = {
456 .name = "ab8500-ext-supply3",
457 .min_uV = 3400000,
458 .max_uV = 3400000,
459 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
460 .boot_on = 1,
461 },
462 .num_consumer_supplies =
463 ARRAY_SIZE(ab8500_ext_supply3_consumers),
464 .consumer_supplies = ab8500_ext_supply3_consumers,
465 },
466};
467
468static struct ab8500_regulator_platform_data ab8500_regulator_plat_data = {
469 .reg_init = ab8500_reg_init,
470 .num_reg_init = ARRAY_SIZE(ab8500_reg_init),
471 .regulator = ab8500_regulators,
472 .num_regulator = ARRAY_SIZE(ab8500_regulators),
473 .ext_regulator = ab8500_ext_regulators,
474 .num_ext_regulator = ARRAY_SIZE(ab8500_ext_regulators),
475};
476
477/**
478 * struct ab8500_ext_regulator_info - ab8500 regulator information
479 * @dev: device pointer
480 * @desc: regulator description
481 * @cfg: regulator configuration (extension of regulator FW configuration)
482 * @update_bank: bank to control on/off
483 * @update_reg: register to control on/off
484 * @update_mask: mask to enable/disable and set mode of regulator
485 * @update_val: bits holding the regulator current mode
486 * @update_val_hp: bits to set EN pin active (LPn pin deactive)
487 * normally this means high power mode
488 * @update_val_lp: bits to set EN pin active and LPn pin active
489 * normally this means low power mode
490 * @update_val_hw: bits to set regulator pins in HW control
491 * SysClkReq pins and logic will choose mode
492 */
493struct ab8500_ext_regulator_info {
494 struct device *dev;
495 struct regulator_desc desc;
496 struct ab8500_ext_regulator_cfg *cfg;
497 u8 update_bank;
498 u8 update_reg;
499 u8 update_mask;
500 u8 update_val;
501 u8 update_val_hp;
502 u8 update_val_lp;
503 u8 update_val_hw;
504};
505
506static int ab8500_ext_regulator_enable(struct regulator_dev *rdev)
507{
508 int ret;
509 struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
510 u8 regval;
511
512 if (info == NULL) {
513 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
514 return -EINVAL;
515 }
516
517 /*
518 * To satisfy both HW high power request and SW request, the regulator
519 * must be on in high power.
520 */
521 if (info->cfg && info->cfg->hwreq)
522 regval = info->update_val_hp;
523 else
524 regval = info->update_val;
525
526 ret = abx500_mask_and_set_register_interruptible(info->dev,
527 info->update_bank, info->update_reg,
528 info->update_mask, regval);
529 if (ret < 0) {
530 dev_err(rdev_get_dev(rdev),
531 "couldn't set enable bits for regulator\n");
532 return ret;
533 }
534
535 dev_dbg(rdev_get_dev(rdev),
536 "%s-enable (bank, reg, mask, value): 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
537 info->desc.name, info->update_bank, info->update_reg,
538 info->update_mask, regval);
539
540 return 0;
541}
542
543static int ab8500_ext_regulator_disable(struct regulator_dev *rdev)
544{
545 int ret;
546 struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
547 u8 regval;
548
549 if (info == NULL) {
550 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
551 return -EINVAL;
552 }
553
554 /*
555 * Set the regulator in HW request mode if configured
556 */
557 if (info->cfg && info->cfg->hwreq)
558 regval = info->update_val_hw;
559 else
560 regval = 0;
561
562 ret = abx500_mask_and_set_register_interruptible(info->dev,
563 info->update_bank, info->update_reg,
564 info->update_mask, regval);
565 if (ret < 0) {
566 dev_err(rdev_get_dev(rdev),
567 "couldn't set disable bits for regulator\n");
568 return ret;
569 }
570
571 dev_dbg(rdev_get_dev(rdev), "%s-disable (bank, reg, mask, value):"
572 " 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
573 info->desc.name, info->update_bank, info->update_reg,
574 info->update_mask, regval);
575
576 return 0;
577}
578
579static int ab8500_ext_regulator_is_enabled(struct regulator_dev *rdev)
580{
581 int ret;
582 struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
583 u8 regval;
584
585 if (info == NULL) {
586 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
587 return -EINVAL;
588 }
589
590 ret = abx500_get_register_interruptible(info->dev,
591 info->update_bank, info->update_reg, ®val);
592 if (ret < 0) {
593 dev_err(rdev_get_dev(rdev),
594 "couldn't read 0x%x register\n", info->update_reg);
595 return ret;
596 }
597
598 dev_dbg(rdev_get_dev(rdev), "%s-is_enabled (bank, reg, mask, value):"
599 " 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
600 info->desc.name, info->update_bank, info->update_reg,
601 info->update_mask, regval);
602
603 if (((regval & info->update_mask) == info->update_val_lp) ||
604 ((regval & info->update_mask) == info->update_val_hp))
605 return 1;
606 else
607 return 0;
608}
609
610static int ab8500_ext_regulator_set_mode(struct regulator_dev *rdev,
611 unsigned int mode)
612{
613 int ret = 0;
614 struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
615 u8 regval;
616
617 if (info == NULL) {
618 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
619 return -EINVAL;
620 }
621
622 switch (mode) {
623 case REGULATOR_MODE_NORMAL:
624 regval = info->update_val_hp;
625 break;
626 case REGULATOR_MODE_IDLE:
627 regval = info->update_val_lp;
628 break;
629
630 default:
631 return -EINVAL;
632 }
633
634 /* If regulator is enabled and info->cfg->hwreq is set, the regulator
635 must be on in high power, so we don't need to write the register with
636 the same value.
637 */
638 if (ab8500_ext_regulator_is_enabled(rdev) &&
639 !(info->cfg && info->cfg->hwreq)) {
640 ret = abx500_mask_and_set_register_interruptible(info->dev,
641 info->update_bank, info->update_reg,
642 info->update_mask, regval);
643 if (ret < 0) {
644 dev_err(rdev_get_dev(rdev),
645 "Could not set regulator mode.\n");
646 return ret;
647 }
648
649 dev_dbg(rdev_get_dev(rdev),
650 "%s-set_mode (bank, reg, mask, value): "
651 "0x%x, 0x%x, 0x%x, 0x%x\n",
652 info->desc.name, info->update_bank, info->update_reg,
653 info->update_mask, regval);
654 }
655
656 info->update_val = regval;
657
658 return 0;
659}
660
661static unsigned int ab8500_ext_regulator_get_mode(struct regulator_dev *rdev)
662{
663 struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
664 int ret;
665
666 if (info == NULL) {
667 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
668 return -EINVAL;
669 }
670
671 if (info->update_val == info->update_val_hp)
672 ret = REGULATOR_MODE_NORMAL;
673 else if (info->update_val == info->update_val_lp)
674 ret = REGULATOR_MODE_IDLE;
675 else
676 ret = -EINVAL;
677
678 return ret;
679}
680
681static int ab8500_ext_set_voltage(struct regulator_dev *rdev, int min_uV,
682 int max_uV, unsigned *selector)
683{
684 struct regulation_constraints *regu_constraints = rdev->constraints;
685
686 if (!regu_constraints) {
687 dev_err(rdev_get_dev(rdev), "No regulator constraints\n");
688 return -EINVAL;
689 }
690
691 if (regu_constraints->min_uV == min_uV &&
692 regu_constraints->max_uV == max_uV)
693 return 0;
694
695 dev_err(rdev_get_dev(rdev),
696 "Requested min %duV max %duV != constrained min %duV max %duV\n",
697 min_uV, max_uV,
698 regu_constraints->min_uV, regu_constraints->max_uV);
699
700 return -EINVAL;
701}
702
703static int ab8500_ext_list_voltage(struct regulator_dev *rdev,
704 unsigned selector)
705{
706 struct regulation_constraints *regu_constraints = rdev->constraints;
707
708 if (regu_constraints == NULL) {
709 dev_err(rdev_get_dev(rdev), "regulator constraints null pointer\n");
710 return -EINVAL;
711 }
712 /* return the uV for the fixed regulators */
713 if (regu_constraints->min_uV && regu_constraints->max_uV) {
714 if (regu_constraints->min_uV == regu_constraints->max_uV)
715 return regu_constraints->min_uV;
716 }
717 return -EINVAL;
718}
719
720static const struct regulator_ops ab8500_ext_regulator_ops = {
721 .enable = ab8500_ext_regulator_enable,
722 .disable = ab8500_ext_regulator_disable,
723 .is_enabled = ab8500_ext_regulator_is_enabled,
724 .set_mode = ab8500_ext_regulator_set_mode,
725 .get_mode = ab8500_ext_regulator_get_mode,
726 .set_voltage = ab8500_ext_set_voltage,
727 .list_voltage = ab8500_ext_list_voltage,
728};
729
730static struct ab8500_ext_regulator_info
731 ab8500_ext_regulator_info[AB8500_NUM_EXT_REGULATORS] = {
732 [AB8500_EXT_SUPPLY1] = {
733 .desc = {
734 .name = "VEXTSUPPLY1",
735 .of_match = of_match_ptr("ab8500_ext1"),
736 .ops = &ab8500_ext_regulator_ops,
737 .type = REGULATOR_VOLTAGE,
738 .id = AB8500_EXT_SUPPLY1,
739 .owner = THIS_MODULE,
740 .n_voltages = 1,
741 },
742 .update_bank = 0x04,
743 .update_reg = 0x08,
744 .update_mask = 0x03,
745 .update_val = 0x01,
746 .update_val_hp = 0x01,
747 .update_val_lp = 0x03,
748 .update_val_hw = 0x02,
749 },
750 [AB8500_EXT_SUPPLY2] = {
751 .desc = {
752 .name = "VEXTSUPPLY2",
753 .of_match = of_match_ptr("ab8500_ext2"),
754 .ops = &ab8500_ext_regulator_ops,
755 .type = REGULATOR_VOLTAGE,
756 .id = AB8500_EXT_SUPPLY2,
757 .owner = THIS_MODULE,
758 .n_voltages = 1,
759 },
760 .update_bank = 0x04,
761 .update_reg = 0x08,
762 .update_mask = 0x0c,
763 .update_val = 0x04,
764 .update_val_hp = 0x04,
765 .update_val_lp = 0x0c,
766 .update_val_hw = 0x08,
767 },
768 [AB8500_EXT_SUPPLY3] = {
769 .desc = {
770 .name = "VEXTSUPPLY3",
771 .of_match = of_match_ptr("ab8500_ext3"),
772 .ops = &ab8500_ext_regulator_ops,
773 .type = REGULATOR_VOLTAGE,
774 .id = AB8500_EXT_SUPPLY3,
775 .owner = THIS_MODULE,
776 .n_voltages = 1,
777 },
778 .update_bank = 0x04,
779 .update_reg = 0x08,
780 .update_mask = 0x30,
781 .update_val = 0x10,
782 .update_val_hp = 0x10,
783 .update_val_lp = 0x30,
784 .update_val_hw = 0x20,
785 },
786};
787
788static int ab8500_ext_regulator_probe(struct platform_device *pdev)
789{
790 struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
791 struct ab8500_regulator_platform_data *pdata = &ab8500_regulator_plat_data;
792 struct regulator_config config = { };
793 struct regulator_dev *rdev;
794 int i;
795
796 if (!ab8500) {
797 dev_err(&pdev->dev, "null mfd parent\n");
798 return -EINVAL;
799 }
800
801 /* make sure the platform data has the correct size */
802 if (pdata->num_ext_regulator != ARRAY_SIZE(ab8500_ext_regulator_info)) {
803 dev_err(&pdev->dev, "Configuration error: size mismatch.\n");
804 return -EINVAL;
805 }
806
807 /* check for AB8500 2.x */
808 if (is_ab8500_2p0_or_earlier(ab8500)) {
809 struct ab8500_ext_regulator_info *info;
810
811 /* VextSupply3LPn is inverted on AB8500 2.x */
812 info = &ab8500_ext_regulator_info[AB8500_EXT_SUPPLY3];
813 info->update_val = 0x30;
814 info->update_val_hp = 0x30;
815 info->update_val_lp = 0x10;
816 }
817
818 /* register all regulators */
819 for (i = 0; i < ARRAY_SIZE(ab8500_ext_regulator_info); i++) {
820 struct ab8500_ext_regulator_info *info = NULL;
821
822 /* assign per-regulator data */
823 info = &ab8500_ext_regulator_info[i];
824 info->dev = &pdev->dev;
825 info->cfg = (struct ab8500_ext_regulator_cfg *)
826 pdata->ext_regulator[i].driver_data;
827
828 config.dev = &pdev->dev;
829 config.driver_data = info;
830 config.init_data = &pdata->ext_regulator[i];
831
832 /* register regulator with framework */
833 rdev = devm_regulator_register(&pdev->dev, &info->desc,
834 &config);
835 if (IS_ERR(rdev)) {
836 dev_err(&pdev->dev, "failed to register regulator %s\n",
837 info->desc.name);
838 return PTR_ERR(rdev);
839 }
840
841 dev_dbg(&pdev->dev, "%s-probed\n", info->desc.name);
842 }
843
844 return 0;
845}
846
847static struct platform_driver ab8500_ext_regulator_driver = {
848 .probe = ab8500_ext_regulator_probe,
849 .driver = {
850 .name = "ab8500-ext-regulator",
851 },
852};
853
854static int __init ab8500_ext_regulator_init(void)
855{
856 int ret;
857
858 ret = platform_driver_register(&ab8500_ext_regulator_driver);
859 if (ret)
860 pr_err("Failed to register ab8500 ext regulator: %d\n", ret);
861
862 return ret;
863}
864subsys_initcall(ab8500_ext_regulator_init);
865
866static void __exit ab8500_ext_regulator_exit(void)
867{
868 platform_driver_unregister(&ab8500_ext_regulator_driver);
869}
870module_exit(ab8500_ext_regulator_exit);
871
872MODULE_LICENSE("GPL v2");
873MODULE_AUTHOR("Bengt Jonsson <bengt.g.jonsson@stericsson.com>");
874MODULE_DESCRIPTION("AB8500 external regulator driver");
875MODULE_ALIAS("platform:ab8500-ext-regulator");
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) ST-Ericsson SA 2010
4 *
5 * Authors: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
6 *
7 * This file is based on drivers/regulator/ab8500.c
8 *
9 * AB8500 external regulators
10 *
11 * ab8500-ext supports the following regulators:
12 * - VextSupply3
13 */
14#include <linux/init.h>
15#include <linux/kernel.h>
16#include <linux/err.h>
17#include <linux/module.h>
18#include <linux/of.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/abx500.h>
24#include <linux/mfd/abx500/ab8500.h>
25
26/* AB8500 external regulators */
27enum ab8500_ext_regulator_id {
28 AB8500_EXT_SUPPLY1,
29 AB8500_EXT_SUPPLY2,
30 AB8500_EXT_SUPPLY3,
31 AB8500_NUM_EXT_REGULATORS,
32};
33
34struct ab8500_ext_regulator_cfg {
35 bool hwreq; /* requires hw mode or high power mode */
36};
37
38/* supply for VextSupply3 */
39static struct regulator_consumer_supply ab8500_ext_supply3_consumers[] = {
40 /* SIM supply for 3 V SIM cards */
41 REGULATOR_SUPPLY("vinvsim", "sim-detect.0"),
42};
43
44/*
45 * AB8500 external regulators
46 */
47static struct regulator_init_data ab8500_ext_regulators[] = {
48 /* fixed Vbat supplies VSMPS1_EXT_1V8 */
49 [AB8500_EXT_SUPPLY1] = {
50 .constraints = {
51 .name = "ab8500-ext-supply1",
52 .min_uV = 1800000,
53 .max_uV = 1800000,
54 .initial_mode = REGULATOR_MODE_IDLE,
55 .boot_on = 1,
56 .always_on = 1,
57 },
58 },
59 /* fixed Vbat supplies VSMPS2_EXT_1V36 and VSMPS5_EXT_1V15 */
60 [AB8500_EXT_SUPPLY2] = {
61 .constraints = {
62 .name = "ab8500-ext-supply2",
63 .min_uV = 1360000,
64 .max_uV = 1360000,
65 },
66 },
67 /* fixed Vbat supplies VSMPS3_EXT_3V4 and VSMPS4_EXT_3V4 */
68 [AB8500_EXT_SUPPLY3] = {
69 .constraints = {
70 .name = "ab8500-ext-supply3",
71 .min_uV = 3400000,
72 .max_uV = 3400000,
73 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
74 .boot_on = 1,
75 },
76 .num_consumer_supplies =
77 ARRAY_SIZE(ab8500_ext_supply3_consumers),
78 .consumer_supplies = ab8500_ext_supply3_consumers,
79 },
80};
81
82/**
83 * struct ab8500_ext_regulator_info - ab8500 regulator information
84 * @dev: device pointer
85 * @desc: regulator description
86 * @cfg: regulator configuration (extension of regulator FW configuration)
87 * @update_bank: bank to control on/off
88 * @update_reg: register to control on/off
89 * @update_mask: mask to enable/disable and set mode of regulator
90 * @update_val: bits holding the regulator current mode
91 * @update_val_hp: bits to set EN pin active (LPn pin deactive)
92 * normally this means high power mode
93 * @update_val_lp: bits to set EN pin active and LPn pin active
94 * normally this means low power mode
95 * @update_val_hw: bits to set regulator pins in HW control
96 * SysClkReq pins and logic will choose mode
97 */
98struct ab8500_ext_regulator_info {
99 struct device *dev;
100 struct regulator_desc desc;
101 struct ab8500_ext_regulator_cfg *cfg;
102 u8 update_bank;
103 u8 update_reg;
104 u8 update_mask;
105 u8 update_val;
106 u8 update_val_hp;
107 u8 update_val_lp;
108 u8 update_val_hw;
109};
110
111static int ab8500_ext_regulator_enable(struct regulator_dev *rdev)
112{
113 int ret;
114 struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
115 u8 regval;
116
117 if (info == NULL) {
118 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
119 return -EINVAL;
120 }
121
122 /*
123 * To satisfy both HW high power request and SW request, the regulator
124 * must be on in high power.
125 */
126 if (info->cfg && info->cfg->hwreq)
127 regval = info->update_val_hp;
128 else
129 regval = info->update_val;
130
131 ret = abx500_mask_and_set_register_interruptible(info->dev,
132 info->update_bank, info->update_reg,
133 info->update_mask, regval);
134 if (ret < 0) {
135 dev_err(rdev_get_dev(rdev),
136 "couldn't set enable bits for regulator\n");
137 return ret;
138 }
139
140 dev_dbg(rdev_get_dev(rdev),
141 "%s-enable (bank, reg, mask, value): 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
142 info->desc.name, info->update_bank, info->update_reg,
143 info->update_mask, regval);
144
145 return 0;
146}
147
148static int ab8500_ext_regulator_disable(struct regulator_dev *rdev)
149{
150 int ret;
151 struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
152 u8 regval;
153
154 if (info == NULL) {
155 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
156 return -EINVAL;
157 }
158
159 /*
160 * Set the regulator in HW request mode if configured
161 */
162 if (info->cfg && info->cfg->hwreq)
163 regval = info->update_val_hw;
164 else
165 regval = 0;
166
167 ret = abx500_mask_and_set_register_interruptible(info->dev,
168 info->update_bank, info->update_reg,
169 info->update_mask, regval);
170 if (ret < 0) {
171 dev_err(rdev_get_dev(rdev),
172 "couldn't set disable bits for regulator\n");
173 return ret;
174 }
175
176 dev_dbg(rdev_get_dev(rdev), "%s-disable (bank, reg, mask, value):"
177 " 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
178 info->desc.name, info->update_bank, info->update_reg,
179 info->update_mask, regval);
180
181 return 0;
182}
183
184static int ab8500_ext_regulator_is_enabled(struct regulator_dev *rdev)
185{
186 int ret;
187 struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
188 u8 regval;
189
190 if (info == NULL) {
191 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
192 return -EINVAL;
193 }
194
195 ret = abx500_get_register_interruptible(info->dev,
196 info->update_bank, info->update_reg, ®val);
197 if (ret < 0) {
198 dev_err(rdev_get_dev(rdev),
199 "couldn't read 0x%x register\n", info->update_reg);
200 return ret;
201 }
202
203 dev_dbg(rdev_get_dev(rdev), "%s-is_enabled (bank, reg, mask, value):"
204 " 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
205 info->desc.name, info->update_bank, info->update_reg,
206 info->update_mask, regval);
207
208 if (((regval & info->update_mask) == info->update_val_lp) ||
209 ((regval & info->update_mask) == info->update_val_hp))
210 return 1;
211 else
212 return 0;
213}
214
215static int ab8500_ext_regulator_set_mode(struct regulator_dev *rdev,
216 unsigned int mode)
217{
218 int ret = 0;
219 struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
220 u8 regval;
221
222 if (info == NULL) {
223 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
224 return -EINVAL;
225 }
226
227 switch (mode) {
228 case REGULATOR_MODE_NORMAL:
229 regval = info->update_val_hp;
230 break;
231 case REGULATOR_MODE_IDLE:
232 regval = info->update_val_lp;
233 break;
234
235 default:
236 return -EINVAL;
237 }
238
239 /* If regulator is enabled and info->cfg->hwreq is set, the regulator
240 must be on in high power, so we don't need to write the register with
241 the same value.
242 */
243 if (ab8500_ext_regulator_is_enabled(rdev) &&
244 !(info->cfg && info->cfg->hwreq)) {
245 ret = abx500_mask_and_set_register_interruptible(info->dev,
246 info->update_bank, info->update_reg,
247 info->update_mask, regval);
248 if (ret < 0) {
249 dev_err(rdev_get_dev(rdev),
250 "Could not set regulator mode.\n");
251 return ret;
252 }
253
254 dev_dbg(rdev_get_dev(rdev),
255 "%s-set_mode (bank, reg, mask, value): "
256 "0x%x, 0x%x, 0x%x, 0x%x\n",
257 info->desc.name, info->update_bank, info->update_reg,
258 info->update_mask, regval);
259 }
260
261 info->update_val = regval;
262
263 return 0;
264}
265
266static unsigned int ab8500_ext_regulator_get_mode(struct regulator_dev *rdev)
267{
268 struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
269 int ret;
270
271 if (info == NULL) {
272 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
273 return -EINVAL;
274 }
275
276 if (info->update_val == info->update_val_hp)
277 ret = REGULATOR_MODE_NORMAL;
278 else if (info->update_val == info->update_val_lp)
279 ret = REGULATOR_MODE_IDLE;
280 else
281 ret = -EINVAL;
282
283 return ret;
284}
285
286static int ab8500_ext_set_voltage(struct regulator_dev *rdev, int min_uV,
287 int max_uV, unsigned *selector)
288{
289 struct regulation_constraints *regu_constraints = rdev->constraints;
290
291 if (!regu_constraints) {
292 dev_err(rdev_get_dev(rdev), "No regulator constraints\n");
293 return -EINVAL;
294 }
295
296 if (regu_constraints->min_uV == min_uV &&
297 regu_constraints->max_uV == max_uV)
298 return 0;
299
300 dev_err(rdev_get_dev(rdev),
301 "Requested min %duV max %duV != constrained min %duV max %duV\n",
302 min_uV, max_uV,
303 regu_constraints->min_uV, regu_constraints->max_uV);
304
305 return -EINVAL;
306}
307
308static int ab8500_ext_list_voltage(struct regulator_dev *rdev,
309 unsigned selector)
310{
311 struct regulation_constraints *regu_constraints = rdev->constraints;
312
313 if (regu_constraints == NULL) {
314 dev_err(rdev_get_dev(rdev), "regulator constraints null pointer\n");
315 return -EINVAL;
316 }
317 /* return the uV for the fixed regulators */
318 if (regu_constraints->min_uV && regu_constraints->max_uV) {
319 if (regu_constraints->min_uV == regu_constraints->max_uV)
320 return regu_constraints->min_uV;
321 }
322 return -EINVAL;
323}
324
325static const struct regulator_ops ab8500_ext_regulator_ops = {
326 .enable = ab8500_ext_regulator_enable,
327 .disable = ab8500_ext_regulator_disable,
328 .is_enabled = ab8500_ext_regulator_is_enabled,
329 .set_mode = ab8500_ext_regulator_set_mode,
330 .get_mode = ab8500_ext_regulator_get_mode,
331 .set_voltage = ab8500_ext_set_voltage,
332 .list_voltage = ab8500_ext_list_voltage,
333};
334
335static struct ab8500_ext_regulator_info
336 ab8500_ext_regulator_info[AB8500_NUM_EXT_REGULATORS] = {
337 [AB8500_EXT_SUPPLY1] = {
338 .desc = {
339 .name = "VEXTSUPPLY1",
340 .of_match = of_match_ptr("ab8500_ext1"),
341 .ops = &ab8500_ext_regulator_ops,
342 .type = REGULATOR_VOLTAGE,
343 .id = AB8500_EXT_SUPPLY1,
344 .owner = THIS_MODULE,
345 .n_voltages = 1,
346 },
347 .update_bank = 0x04,
348 .update_reg = 0x08,
349 .update_mask = 0x03,
350 .update_val = 0x01,
351 .update_val_hp = 0x01,
352 .update_val_lp = 0x03,
353 .update_val_hw = 0x02,
354 },
355 [AB8500_EXT_SUPPLY2] = {
356 .desc = {
357 .name = "VEXTSUPPLY2",
358 .of_match = of_match_ptr("ab8500_ext2"),
359 .ops = &ab8500_ext_regulator_ops,
360 .type = REGULATOR_VOLTAGE,
361 .id = AB8500_EXT_SUPPLY2,
362 .owner = THIS_MODULE,
363 .n_voltages = 1,
364 },
365 .update_bank = 0x04,
366 .update_reg = 0x08,
367 .update_mask = 0x0c,
368 .update_val = 0x04,
369 .update_val_hp = 0x04,
370 .update_val_lp = 0x0c,
371 .update_val_hw = 0x08,
372 },
373 [AB8500_EXT_SUPPLY3] = {
374 .desc = {
375 .name = "VEXTSUPPLY3",
376 .of_match = of_match_ptr("ab8500_ext3"),
377 .ops = &ab8500_ext_regulator_ops,
378 .type = REGULATOR_VOLTAGE,
379 .id = AB8500_EXT_SUPPLY3,
380 .owner = THIS_MODULE,
381 .n_voltages = 1,
382 },
383 .update_bank = 0x04,
384 .update_reg = 0x08,
385 .update_mask = 0x30,
386 .update_val = 0x10,
387 .update_val_hp = 0x10,
388 .update_val_lp = 0x30,
389 .update_val_hw = 0x20,
390 },
391};
392
393static int ab8500_ext_regulator_probe(struct platform_device *pdev)
394{
395 struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
396 struct regulator_config config = { };
397 struct regulator_dev *rdev;
398 int i;
399
400 if (!ab8500) {
401 dev_err(&pdev->dev, "null mfd parent\n");
402 return -EINVAL;
403 }
404
405 /* check for AB8500 2.x */
406 if (is_ab8500_2p0_or_earlier(ab8500)) {
407 struct ab8500_ext_regulator_info *info;
408
409 /* VextSupply3LPn is inverted on AB8500 2.x */
410 info = &ab8500_ext_regulator_info[AB8500_EXT_SUPPLY3];
411 info->update_val = 0x30;
412 info->update_val_hp = 0x30;
413 info->update_val_lp = 0x10;
414 }
415
416 /* register all regulators */
417 for (i = 0; i < ARRAY_SIZE(ab8500_ext_regulator_info); i++) {
418 struct ab8500_ext_regulator_info *info = NULL;
419
420 /* assign per-regulator data */
421 info = &ab8500_ext_regulator_info[i];
422 info->dev = &pdev->dev;
423 info->cfg = (struct ab8500_ext_regulator_cfg *)
424 ab8500_ext_regulators[i].driver_data;
425
426 config.dev = &pdev->dev;
427 config.driver_data = info;
428 config.init_data = &ab8500_ext_regulators[i];
429
430 /* register regulator with framework */
431 rdev = devm_regulator_register(&pdev->dev, &info->desc,
432 &config);
433 if (IS_ERR(rdev)) {
434 dev_err(&pdev->dev, "failed to register regulator %s\n",
435 info->desc.name);
436 return PTR_ERR(rdev);
437 }
438
439 dev_dbg(&pdev->dev, "%s-probed\n", info->desc.name);
440 }
441
442 return 0;
443}
444
445static struct platform_driver ab8500_ext_regulator_driver = {
446 .probe = ab8500_ext_regulator_probe,
447 .driver = {
448 .name = "ab8500-ext-regulator",
449 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
450 },
451};
452
453static int __init ab8500_ext_regulator_init(void)
454{
455 int ret;
456
457 ret = platform_driver_register(&ab8500_ext_regulator_driver);
458 if (ret)
459 pr_err("Failed to register ab8500 ext regulator: %d\n", ret);
460
461 return ret;
462}
463subsys_initcall(ab8500_ext_regulator_init);
464
465static void __exit ab8500_ext_regulator_exit(void)
466{
467 platform_driver_unregister(&ab8500_ext_regulator_driver);
468}
469module_exit(ab8500_ext_regulator_exit);
470
471MODULE_LICENSE("GPL v2");
472MODULE_AUTHOR("Bengt Jonsson <bengt.g.jonsson@stericsson.com>");
473MODULE_DESCRIPTION("AB8500 external regulator driver");
474MODULE_ALIAS("platform:ab8500-ext-regulator");