1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * Driver for Regulator part of Palmas PMIC Chips
4  *
5  * Copyright 2011-2013 Texas Instruments Inc.
6  *
7  * Author: Graeme Gregory <gg@slimlogic.co.uk>
8  * Author: Ian Lartey <ian@slimlogic.co.uk>
9  */
10 
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/init.h>
14 #include <linux/err.h>
15 #include <linux/platform_device.h>
16 #include <linux/regulator/driver.h>
17 #include <linux/regulator/machine.h>
18 #include <linux/slab.h>
19 #include <linux/regmap.h>
20 #include <linux/mfd/palmas.h>
21 #include <linux/of.h>
22 #include <linux/of_platform.h>
23 #include <linux/regulator/of_regulator.h>
24 
25 static const struct linear_range smps_low_ranges[] = {
26 	REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
27 	REGULATOR_LINEAR_RANGE(500000, 0x1, 0x6, 0),
28 	REGULATOR_LINEAR_RANGE(510000, 0x7, 0x79, 10000),
29 	REGULATOR_LINEAR_RANGE(1650000, 0x7A, 0x7f, 0),
30 };
31 
32 static const struct linear_range smps_high_ranges[] = {
33 	REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
34 	REGULATOR_LINEAR_RANGE(1000000, 0x1, 0x6, 0),
35 	REGULATOR_LINEAR_RANGE(1020000, 0x7, 0x79, 20000),
36 	REGULATOR_LINEAR_RANGE(3300000, 0x7A, 0x7f, 0),
37 };
38 
39 static struct palmas_regs_info palmas_generic_regs_info[] = {
40 	{
41 		.name		= "SMPS12",
42 		.sname		= "smps1-in",
43 		.vsel_addr	= PALMAS_SMPS12_VOLTAGE,
44 		.ctrl_addr	= PALMAS_SMPS12_CTRL,
45 		.tstep_addr	= PALMAS_SMPS12_TSTEP,
46 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_SMPS12,
47 	},
48 	{
49 		.name		= "SMPS123",
50 		.sname		= "smps1-in",
51 		.vsel_addr	= PALMAS_SMPS12_VOLTAGE,
52 		.ctrl_addr	= PALMAS_SMPS12_CTRL,
53 		.tstep_addr	= PALMAS_SMPS12_TSTEP,
54 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_SMPS12,
55 	},
56 	{
57 		.name		= "SMPS3",
58 		.sname		= "smps3-in",
59 		.vsel_addr	= PALMAS_SMPS3_VOLTAGE,
60 		.ctrl_addr	= PALMAS_SMPS3_CTRL,
61 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_SMPS3,
62 	},
63 	{
64 		.name		= "SMPS45",
65 		.sname		= "smps4-in",
66 		.vsel_addr	= PALMAS_SMPS45_VOLTAGE,
67 		.ctrl_addr	= PALMAS_SMPS45_CTRL,
68 		.tstep_addr	= PALMAS_SMPS45_TSTEP,
69 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_SMPS45,
70 	},
71 	{
72 		.name		= "SMPS457",
73 		.sname		= "smps4-in",
74 		.vsel_addr	= PALMAS_SMPS45_VOLTAGE,
75 		.ctrl_addr	= PALMAS_SMPS45_CTRL,
76 		.tstep_addr	= PALMAS_SMPS45_TSTEP,
77 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_SMPS45,
78 	},
79 	{
80 		.name		= "SMPS6",
81 		.sname		= "smps6-in",
82 		.vsel_addr	= PALMAS_SMPS6_VOLTAGE,
83 		.ctrl_addr	= PALMAS_SMPS6_CTRL,
84 		.tstep_addr	= PALMAS_SMPS6_TSTEP,
85 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_SMPS6,
86 	},
87 	{
88 		.name		= "SMPS7",
89 		.sname		= "smps7-in",
90 		.vsel_addr	= PALMAS_SMPS7_VOLTAGE,
91 		.ctrl_addr	= PALMAS_SMPS7_CTRL,
92 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_SMPS7,
93 	},
94 	{
95 		.name		= "SMPS8",
96 		.sname		= "smps8-in",
97 		.vsel_addr	= PALMAS_SMPS8_VOLTAGE,
98 		.ctrl_addr	= PALMAS_SMPS8_CTRL,
99 		.tstep_addr	= PALMAS_SMPS8_TSTEP,
100 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_SMPS8,
101 	},
102 	{
103 		.name		= "SMPS9",
104 		.sname		= "smps9-in",
105 		.vsel_addr	= PALMAS_SMPS9_VOLTAGE,
106 		.ctrl_addr	= PALMAS_SMPS9_CTRL,
107 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_SMPS9,
108 	},
109 	{
110 		.name		= "SMPS10_OUT2",
111 		.sname		= "smps10-in",
112 		.ctrl_addr	= PALMAS_SMPS10_CTRL,
113 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_SMPS10,
114 	},
115 	{
116 		.name		= "SMPS10_OUT1",
117 		.sname		= "smps10-out2",
118 		.ctrl_addr	= PALMAS_SMPS10_CTRL,
119 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_SMPS10,
120 	},
121 	{
122 		.name		= "LDO1",
123 		.sname		= "ldo1-in",
124 		.vsel_addr	= PALMAS_LDO1_VOLTAGE,
125 		.ctrl_addr	= PALMAS_LDO1_CTRL,
126 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_LDO1,
127 	},
128 	{
129 		.name		= "LDO2",
130 		.sname		= "ldo2-in",
131 		.vsel_addr	= PALMAS_LDO2_VOLTAGE,
132 		.ctrl_addr	= PALMAS_LDO2_CTRL,
133 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_LDO2,
134 	},
135 	{
136 		.name		= "LDO3",
137 		.sname		= "ldo3-in",
138 		.vsel_addr	= PALMAS_LDO3_VOLTAGE,
139 		.ctrl_addr	= PALMAS_LDO3_CTRL,
140 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_LDO3,
141 	},
142 	{
143 		.name		= "LDO4",
144 		.sname		= "ldo4-in",
145 		.vsel_addr	= PALMAS_LDO4_VOLTAGE,
146 		.ctrl_addr	= PALMAS_LDO4_CTRL,
147 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_LDO4,
148 	},
149 	{
150 		.name		= "LDO5",
151 		.sname		= "ldo5-in",
152 		.vsel_addr	= PALMAS_LDO5_VOLTAGE,
153 		.ctrl_addr	= PALMAS_LDO5_CTRL,
154 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_LDO5,
155 	},
156 	{
157 		.name		= "LDO6",
158 		.sname		= "ldo6-in",
159 		.vsel_addr	= PALMAS_LDO6_VOLTAGE,
160 		.ctrl_addr	= PALMAS_LDO6_CTRL,
161 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_LDO6,
162 	},
163 	{
164 		.name		= "LDO7",
165 		.sname		= "ldo7-in",
166 		.vsel_addr	= PALMAS_LDO7_VOLTAGE,
167 		.ctrl_addr	= PALMAS_LDO7_CTRL,
168 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_LDO7,
169 	},
170 	{
171 		.name		= "LDO8",
172 		.sname		= "ldo8-in",
173 		.vsel_addr	= PALMAS_LDO8_VOLTAGE,
174 		.ctrl_addr	= PALMAS_LDO8_CTRL,
175 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_LDO8,
176 	},
177 	{
178 		.name		= "LDO9",
179 		.sname		= "ldo9-in",
180 		.vsel_addr	= PALMAS_LDO9_VOLTAGE,
181 		.ctrl_addr	= PALMAS_LDO9_CTRL,
182 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_LDO9,
183 	},
184 	{
185 		.name		= "LDOLN",
186 		.sname		= "ldoln-in",
187 		.vsel_addr	= PALMAS_LDOLN_VOLTAGE,
188 		.ctrl_addr	= PALMAS_LDOLN_CTRL,
189 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_LDOLN,
190 	},
191 	{
192 		.name		= "LDOUSB",
193 		.sname		= "ldousb-in",
194 		.vsel_addr	= PALMAS_LDOUSB_VOLTAGE,
195 		.ctrl_addr	= PALMAS_LDOUSB_CTRL,
196 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_LDOUSB,
197 	},
198 	{
199 		.name		= "REGEN1",
200 		.ctrl_addr	= PALMAS_REGEN1_CTRL,
201 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_REGEN1,
202 	},
203 	{
204 		.name		= "REGEN2",
205 		.ctrl_addr	= PALMAS_REGEN2_CTRL,
206 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_REGEN2,
207 	},
208 	{
209 		.name		= "REGEN3",
210 		.ctrl_addr	= PALMAS_REGEN3_CTRL,
211 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_REGEN3,
212 	},
213 	{
214 		.name		= "SYSEN1",
215 		.ctrl_addr	= PALMAS_SYSEN1_CTRL,
216 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_SYSEN1,
217 	},
218 	{
219 		.name		= "SYSEN2",
220 		.ctrl_addr	= PALMAS_SYSEN2_CTRL,
221 		.sleep_id	= PALMAS_EXTERNAL_REQSTR_ID_SYSEN2,
222 	},
223 };
224 
225 static struct palmas_regs_info tps65917_regs_info[] = {
226 	{
227 		.name		= "SMPS1",
228 		.sname		= "smps1-in",
229 		.vsel_addr	= TPS65917_SMPS1_VOLTAGE,
230 		.ctrl_addr	= TPS65917_SMPS1_CTRL,
231 		.sleep_id	= TPS65917_EXTERNAL_REQSTR_ID_SMPS1,
232 	},
233 	{
234 		.name		= "SMPS2",
235 		.sname		= "smps2-in",
236 		.vsel_addr	= TPS65917_SMPS2_VOLTAGE,
237 		.ctrl_addr	= TPS65917_SMPS2_CTRL,
238 		.sleep_id	= TPS65917_EXTERNAL_REQSTR_ID_SMPS2,
239 	},
240 	{
241 		.name		= "SMPS3",
242 		.sname		= "smps3-in",
243 		.vsel_addr	= TPS65917_SMPS3_VOLTAGE,
244 		.ctrl_addr	= TPS65917_SMPS3_CTRL,
245 		.sleep_id	= TPS65917_EXTERNAL_REQSTR_ID_SMPS3,
246 	},
247 	{
248 		.name		= "SMPS4",
249 		.sname		= "smps4-in",
250 		.vsel_addr	= TPS65917_SMPS4_VOLTAGE,
251 		.ctrl_addr	= TPS65917_SMPS4_CTRL,
252 		.sleep_id	= TPS65917_EXTERNAL_REQSTR_ID_SMPS4,
253 	},
254 	{
255 		.name		= "SMPS5",
256 		.sname		= "smps5-in",
257 		.vsel_addr	= TPS65917_SMPS5_VOLTAGE,
258 		.ctrl_addr	= TPS65917_SMPS5_CTRL,
259 		.sleep_id	= TPS65917_EXTERNAL_REQSTR_ID_SMPS5,
260 	},
261 	{
262 		.name		= "SMPS12",
263 		.sname		= "smps1-in",
264 		.vsel_addr	= TPS65917_SMPS1_VOLTAGE,
265 		.ctrl_addr	= TPS65917_SMPS1_CTRL,
266 		.sleep_id	= TPS65917_EXTERNAL_REQSTR_ID_SMPS12,
267 	},
268 	{
269 		.name		= "LDO1",
270 		.sname		= "ldo1-in",
271 		.vsel_addr	= TPS65917_LDO1_VOLTAGE,
272 		.ctrl_addr	= TPS65917_LDO1_CTRL,
273 		.sleep_id	= TPS65917_EXTERNAL_REQSTR_ID_LDO1,
274 	},
275 	{
276 		.name		= "LDO2",
277 		.sname		= "ldo2-in",
278 		.vsel_addr	= TPS65917_LDO2_VOLTAGE,
279 		.ctrl_addr	= TPS65917_LDO2_CTRL,
280 		.sleep_id	= TPS65917_EXTERNAL_REQSTR_ID_LDO2,
281 	},
282 	{
283 		.name		= "LDO3",
284 		.sname		= "ldo3-in",
285 		.vsel_addr	= TPS65917_LDO3_VOLTAGE,
286 		.ctrl_addr	= TPS65917_LDO3_CTRL,
287 		.sleep_id	= TPS65917_EXTERNAL_REQSTR_ID_LDO3,
288 	},
289 	{
290 		.name		= "LDO4",
291 		.sname		= "ldo4-in",
292 		.vsel_addr	= TPS65917_LDO4_VOLTAGE,
293 		.ctrl_addr	= TPS65917_LDO4_CTRL,
294 		.sleep_id	= TPS65917_EXTERNAL_REQSTR_ID_LDO4,
295 	},
296 	{
297 		.name		= "LDO5",
298 		.sname		= "ldo5-in",
299 		.vsel_addr	= TPS65917_LDO5_VOLTAGE,
300 		.ctrl_addr	= TPS65917_LDO5_CTRL,
301 		.sleep_id	= TPS65917_EXTERNAL_REQSTR_ID_LDO5,
302 	},
303 	{
304 		.name		= "REGEN1",
305 		.ctrl_addr	= TPS65917_REGEN1_CTRL,
306 		.sleep_id	= TPS65917_EXTERNAL_REQSTR_ID_REGEN1,
307 	},
308 	{
309 		.name		= "REGEN2",
310 		.ctrl_addr	= TPS65917_REGEN2_CTRL,
311 		.sleep_id	= TPS65917_EXTERNAL_REQSTR_ID_REGEN2,
312 	},
313 	{
314 		.name		= "REGEN3",
315 		.ctrl_addr	= TPS65917_REGEN3_CTRL,
316 		.sleep_id	= TPS65917_EXTERNAL_REQSTR_ID_REGEN3,
317 	},
318 };
319 
320 #define EXTERNAL_REQUESTOR(_id, _offset, _pos)		\
321 	[PALMAS_EXTERNAL_REQSTR_ID_##_id] = {		\
322 		.id = PALMAS_EXTERNAL_REQSTR_ID_##_id,	\
323 		.reg_offset = _offset,			\
324 		.bit_pos = _pos,			\
325 	}
326 
327 static struct palmas_sleep_requestor_info palma_sleep_req_info[] = {
328 	EXTERNAL_REQUESTOR(REGEN1, 0, 0),
329 	EXTERNAL_REQUESTOR(REGEN2, 0, 1),
330 	EXTERNAL_REQUESTOR(SYSEN1, 0, 2),
331 	EXTERNAL_REQUESTOR(SYSEN2, 0, 3),
332 	EXTERNAL_REQUESTOR(CLK32KG, 0, 4),
333 	EXTERNAL_REQUESTOR(CLK32KGAUDIO, 0, 5),
334 	EXTERNAL_REQUESTOR(REGEN3, 0, 6),
335 	EXTERNAL_REQUESTOR(SMPS12, 1, 0),
336 	EXTERNAL_REQUESTOR(SMPS3, 1, 1),
337 	EXTERNAL_REQUESTOR(SMPS45, 1, 2),
338 	EXTERNAL_REQUESTOR(SMPS6, 1, 3),
339 	EXTERNAL_REQUESTOR(SMPS7, 1, 4),
340 	EXTERNAL_REQUESTOR(SMPS8, 1, 5),
341 	EXTERNAL_REQUESTOR(SMPS9, 1, 6),
342 	EXTERNAL_REQUESTOR(SMPS10, 1, 7),
343 	EXTERNAL_REQUESTOR(LDO1, 2, 0),
344 	EXTERNAL_REQUESTOR(LDO2, 2, 1),
345 	EXTERNAL_REQUESTOR(LDO3, 2, 2),
346 	EXTERNAL_REQUESTOR(LDO4, 2, 3),
347 	EXTERNAL_REQUESTOR(LDO5, 2, 4),
348 	EXTERNAL_REQUESTOR(LDO6, 2, 5),
349 	EXTERNAL_REQUESTOR(LDO7, 2, 6),
350 	EXTERNAL_REQUESTOR(LDO8, 2, 7),
351 	EXTERNAL_REQUESTOR(LDO9, 3, 0),
352 	EXTERNAL_REQUESTOR(LDOLN, 3, 1),
353 	EXTERNAL_REQUESTOR(LDOUSB, 3, 2),
354 };
355 
356 #define EXTERNAL_REQUESTOR_TPS65917(_id, _offset, _pos)		\
357 	[TPS65917_EXTERNAL_REQSTR_ID_##_id] = {		\
358 		.id = TPS65917_EXTERNAL_REQSTR_ID_##_id,	\
359 		.reg_offset = _offset,			\
360 		.bit_pos = _pos,			\
361 	}
362 
363 static struct palmas_sleep_requestor_info tps65917_sleep_req_info[] = {
364 	EXTERNAL_REQUESTOR_TPS65917(REGEN1, 0, 0),
365 	EXTERNAL_REQUESTOR_TPS65917(REGEN2, 0, 1),
366 	EXTERNAL_REQUESTOR_TPS65917(REGEN3, 0, 6),
367 	EXTERNAL_REQUESTOR_TPS65917(SMPS1, 1, 0),
368 	EXTERNAL_REQUESTOR_TPS65917(SMPS2, 1, 1),
369 	EXTERNAL_REQUESTOR_TPS65917(SMPS3, 1, 2),
370 	EXTERNAL_REQUESTOR_TPS65917(SMPS4, 1, 3),
371 	EXTERNAL_REQUESTOR_TPS65917(SMPS5, 1, 4),
372 	EXTERNAL_REQUESTOR_TPS65917(SMPS12, 1, 5),
373 	EXTERNAL_REQUESTOR_TPS65917(LDO1, 2, 0),
374 	EXTERNAL_REQUESTOR_TPS65917(LDO2, 2, 1),
375 	EXTERNAL_REQUESTOR_TPS65917(LDO3, 2, 2),
376 	EXTERNAL_REQUESTOR_TPS65917(LDO4, 2, 3),
377 	EXTERNAL_REQUESTOR_TPS65917(LDO5, 2, 4),
378 };
379 
380 static const unsigned int palmas_smps_ramp_delay[4] = {0, 10000, 5000, 2500};
381 
382 #define SMPS_CTRL_MODE_OFF		0x00
383 #define SMPS_CTRL_MODE_ON		0x01
384 #define SMPS_CTRL_MODE_ECO		0x02
385 #define SMPS_CTRL_MODE_PWM		0x03
386 
387 #define PALMAS_SMPS_NUM_VOLTAGES	122
388 #define PALMAS_SMPS10_NUM_VOLTAGES	2
389 #define PALMAS_LDO_NUM_VOLTAGES		50
390 
391 #define SMPS10_VSEL			(1<<3)
392 #define SMPS10_BOOST_EN			(1<<2)
393 #define SMPS10_BYPASS_EN		(1<<1)
394 #define SMPS10_SWITCH_EN		(1<<0)
395 
396 #define REGULATOR_SLAVE			0
397 
398 static int palmas_smps_read(struct palmas *palmas, unsigned int reg,
399 		unsigned int *dest)
400 {
401 	unsigned int addr;
402 
403 	addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg);
404 
405 	return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest);
406 }
407 
408 static int palmas_smps_write(struct palmas *palmas, unsigned int reg,
409 		unsigned int value)
410 {
411 	unsigned int addr;
412 
413 	addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg);
414 
415 	return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value);
416 }
417 
418 static int palmas_ldo_read(struct palmas *palmas, unsigned int reg,
419 		unsigned int *dest)
420 {
421 	unsigned int addr;
422 
423 	addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg);
424 
425 	return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest);
426 }
427 
428 static int palmas_ldo_write(struct palmas *palmas, unsigned int reg,
429 		unsigned int value)
430 {
431 	unsigned int addr;
432 
433 	addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg);
434 
435 	return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value);
436 }
437 
438 static int palmas_set_mode_smps(struct regulator_dev *dev, unsigned int mode)
439 {
440 	int id = rdev_get_id(dev);
441 	int ret;
442 	struct palmas_pmic *pmic = rdev_get_drvdata(dev);
443 	struct palmas_pmic_driver_data *ddata = pmic->palmas->pmic_ddata;
444 	struct palmas_regs_info *rinfo = &ddata->palmas_regs_info[id];
445 	unsigned int reg;
446 	bool rail_enable = true;
447 
448 	ret = palmas_smps_read(pmic->palmas, rinfo->ctrl_addr, &reg);
449 	if (ret)
450 		return ret;
451 
452 	reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
453 
454 	if (reg == SMPS_CTRL_MODE_OFF)
455 		rail_enable = false;
456 
457 	switch (mode) {
458 	case REGULATOR_MODE_NORMAL:
459 		reg |= SMPS_CTRL_MODE_ON;
460 		break;
461 	case REGULATOR_MODE_IDLE:
462 		reg |= SMPS_CTRL_MODE_ECO;
463 		break;
464 	case REGULATOR_MODE_FAST:
465 		reg |= SMPS_CTRL_MODE_PWM;
466 		break;
467 	default:
468 		return -EINVAL;
469 	}
470 
471 	pmic->current_reg_mode[id] = reg & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
472 	if (rail_enable)
473 		palmas_smps_write(pmic->palmas, rinfo->ctrl_addr, reg);
474 
475 	/* Switch the enable value to ensure this is used for enable */
476 	pmic->desc[id].enable_val = pmic->current_reg_mode[id];
477 
478 	return 0;
479 }
480 
481 static unsigned int palmas_get_mode_smps(struct regulator_dev *dev)
482 {
483 	struct palmas_pmic *pmic = rdev_get_drvdata(dev);
484 	int id = rdev_get_id(dev);
485 	unsigned int reg;
486 
487 	reg = pmic->current_reg_mode[id] & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
488 
489 	switch (reg) {
490 	case SMPS_CTRL_MODE_ON:
491 		return REGULATOR_MODE_NORMAL;
492 	case SMPS_CTRL_MODE_ECO:
493 		return REGULATOR_MODE_IDLE;
494 	case SMPS_CTRL_MODE_PWM:
495 		return REGULATOR_MODE_FAST;
496 	}
497 
498 	return 0;
499 }
500 
501 static int palmas_smps_set_ramp_delay(struct regulator_dev *rdev,
502 		 int ramp_delay)
503 {
504 	int id = rdev_get_id(rdev);
505 	struct palmas_pmic *pmic = rdev_get_drvdata(rdev);
506 	struct palmas_pmic_driver_data *ddata = pmic->palmas->pmic_ddata;
507 	struct palmas_regs_info *rinfo = &ddata->palmas_regs_info[id];
508 	unsigned int reg = 0;
509 	int ret;
510 
511 	/* SMPS3 and SMPS7 do not have tstep_addr setting */
512 	switch (id) {
513 	case PALMAS_REG_SMPS3:
514 	case PALMAS_REG_SMPS7:
515 		return 0;
516 	}
517 
518 	if (ramp_delay <= 0)
519 		reg = 0;
520 	else if (ramp_delay <= 2500)
521 		reg = 3;
522 	else if (ramp_delay <= 5000)
523 		reg = 2;
524 	else
525 		reg = 1;
526 
527 	ret = palmas_smps_write(pmic->palmas, rinfo->tstep_addr, reg);
528 	if (ret < 0) {
529 		dev_err(pmic->palmas->dev, "TSTEP write failed: %d\n", ret);
530 		return ret;
531 	}
532 
533 	pmic->ramp_delay[id] = palmas_smps_ramp_delay[reg];
534 	return ret;
535 }
536 
537 static const struct regulator_ops palmas_ops_smps = {
538 	.is_enabled		= regulator_is_enabled_regmap,
539 	.enable			= regulator_enable_regmap,
540 	.disable		= regulator_disable_regmap,
541 	.set_mode		= palmas_set_mode_smps,
542 	.get_mode		= palmas_get_mode_smps,
543 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
544 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
545 	.list_voltage		= regulator_list_voltage_linear_range,
546 	.map_voltage		= regulator_map_voltage_linear_range,
547 	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
548 	.set_ramp_delay		= palmas_smps_set_ramp_delay,
549 };
550 
551 static const struct regulator_ops palmas_ops_ext_control_smps = {
552 	.set_mode		= palmas_set_mode_smps,
553 	.get_mode		= palmas_get_mode_smps,
554 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
555 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
556 	.list_voltage		= regulator_list_voltage_linear_range,
557 	.map_voltage		= regulator_map_voltage_linear_range,
558 	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
559 	.set_ramp_delay		= palmas_smps_set_ramp_delay,
560 };
561 
562 static const struct regulator_ops palmas_ops_smps10 = {
563 	.is_enabled		= regulator_is_enabled_regmap,
564 	.enable			= regulator_enable_regmap,
565 	.disable		= regulator_disable_regmap,
566 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
567 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
568 	.list_voltage		= regulator_list_voltage_linear,
569 	.map_voltage		= regulator_map_voltage_linear,
570 	.set_bypass		= regulator_set_bypass_regmap,
571 	.get_bypass		= regulator_get_bypass_regmap,
572 };
573 
574 static const struct regulator_ops tps65917_ops_smps = {
575 	.is_enabled		= regulator_is_enabled_regmap,
576 	.enable			= regulator_enable_regmap,
577 	.disable		= regulator_disable_regmap,
578 	.set_mode		= palmas_set_mode_smps,
579 	.get_mode		= palmas_get_mode_smps,
580 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
581 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
582 	.list_voltage		= regulator_list_voltage_linear_range,
583 	.map_voltage		= regulator_map_voltage_linear_range,
584 	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
585 };
586 
587 static const struct regulator_ops tps65917_ops_ext_control_smps = {
588 	.set_mode		= palmas_set_mode_smps,
589 	.get_mode		= palmas_get_mode_smps,
590 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
591 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
592 	.list_voltage		= regulator_list_voltage_linear_range,
593 	.map_voltage		= regulator_map_voltage_linear_range,
594 };
595 
596 static int palmas_is_enabled_ldo(struct regulator_dev *dev)
597 {
598 	int id = rdev_get_id(dev);
599 	struct palmas_pmic *pmic = rdev_get_drvdata(dev);
600 	struct palmas_pmic_driver_data *ddata = pmic->palmas->pmic_ddata;
601 	struct palmas_regs_info *rinfo = &ddata->palmas_regs_info[id];
602 	unsigned int reg;
603 
604 	palmas_ldo_read(pmic->palmas, rinfo->ctrl_addr, &reg);
605 
606 	reg &= PALMAS_LDO1_CTRL_STATUS;
607 
608 	return !!(reg);
609 }
610 
611 static const struct regulator_ops palmas_ops_ldo = {
612 	.is_enabled		= palmas_is_enabled_ldo,
613 	.enable			= regulator_enable_regmap,
614 	.disable		= regulator_disable_regmap,
615 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
616 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
617 	.list_voltage		= regulator_list_voltage_linear,
618 	.map_voltage		= regulator_map_voltage_linear,
619 };
620 
621 static const struct regulator_ops palmas_ops_ldo9 = {
622 	.is_enabled		= palmas_is_enabled_ldo,
623 	.enable			= regulator_enable_regmap,
624 	.disable		= regulator_disable_regmap,
625 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
626 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
627 	.list_voltage		= regulator_list_voltage_linear,
628 	.map_voltage		= regulator_map_voltage_linear,
629 	.set_bypass		= regulator_set_bypass_regmap,
630 	.get_bypass		= regulator_get_bypass_regmap,
631 };
632 
633 static const struct regulator_ops palmas_ops_ext_control_ldo = {
634 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
635 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
636 	.list_voltage		= regulator_list_voltage_linear,
637 	.map_voltage		= regulator_map_voltage_linear,
638 };
639 
640 static const struct regulator_ops palmas_ops_extreg = {
641 	.is_enabled		= regulator_is_enabled_regmap,
642 	.enable			= regulator_enable_regmap,
643 	.disable		= regulator_disable_regmap,
644 };
645 
646 static const struct regulator_ops palmas_ops_ext_control_extreg = {
647 };
648 
649 static const struct regulator_ops tps65917_ops_ldo = {
650 	.is_enabled		= palmas_is_enabled_ldo,
651 	.enable			= regulator_enable_regmap,
652 	.disable		= regulator_disable_regmap,
653 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
654 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
655 	.list_voltage		= regulator_list_voltage_linear,
656 	.map_voltage		= regulator_map_voltage_linear,
657 	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
658 };
659 
660 static const struct regulator_ops tps65917_ops_ldo_1_2 = {
661 	.is_enabled		= palmas_is_enabled_ldo,
662 	.enable			= regulator_enable_regmap,
663 	.disable		= regulator_disable_regmap,
664 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
665 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
666 	.list_voltage		= regulator_list_voltage_linear,
667 	.map_voltage		= regulator_map_voltage_linear,
668 	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
669 	.set_bypass		= regulator_set_bypass_regmap,
670 	.get_bypass		= regulator_get_bypass_regmap,
671 };
672 
673 static int palmas_regulator_config_external(struct palmas *palmas, int id,
674 		struct palmas_reg_init *reg_init)
675 {
676 	struct palmas_pmic_driver_data *ddata = palmas->pmic_ddata;
677 	struct palmas_regs_info *rinfo = &ddata->palmas_regs_info[id];
678 	int ret;
679 
680 	ret = palmas_ext_control_req_config(palmas, rinfo->sleep_id,
681 					    reg_init->roof_floor, true);
682 	if (ret < 0)
683 		dev_err(palmas->dev,
684 			"Ext control config for regulator %d failed %d\n",
685 			id, ret);
686 	return ret;
687 }
688 
689 /*
690  * setup the hardware based sleep configuration of the SMPS/LDO regulators
691  * from the platform data. This is different to the software based control
692  * supported by the regulator framework as it is controlled by toggling
693  * pins on the PMIC such as PREQ, SYSEN, ...
694  */
695 static int palmas_smps_init(struct palmas *palmas, int id,
696 		struct palmas_reg_init *reg_init)
697 {
698 	unsigned int reg;
699 	int ret;
700 	struct palmas_pmic_driver_data *ddata = palmas->pmic_ddata;
701 	struct palmas_regs_info *rinfo = &ddata->palmas_regs_info[id];
702 	unsigned int addr = rinfo->ctrl_addr;
703 
704 	ret = palmas_smps_read(palmas, addr, &reg);
705 	if (ret)
706 		return ret;
707 
708 	switch (id) {
709 	case PALMAS_REG_SMPS10_OUT1:
710 	case PALMAS_REG_SMPS10_OUT2:
711 		reg &= ~PALMAS_SMPS10_CTRL_MODE_SLEEP_MASK;
712 		if (reg_init->mode_sleep)
713 			reg |= reg_init->mode_sleep <<
714 					PALMAS_SMPS10_CTRL_MODE_SLEEP_SHIFT;
715 		break;
716 	default:
717 		if (reg_init->warm_reset)
718 			reg |= PALMAS_SMPS12_CTRL_WR_S;
719 		else
720 			reg &= ~PALMAS_SMPS12_CTRL_WR_S;
721 
722 		if (reg_init->roof_floor)
723 			reg |= PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN;
724 		else
725 			reg &= ~PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN;
726 
727 		reg &= ~PALMAS_SMPS12_CTRL_MODE_SLEEP_MASK;
728 		if (reg_init->mode_sleep)
729 			reg |= reg_init->mode_sleep <<
730 					PALMAS_SMPS12_CTRL_MODE_SLEEP_SHIFT;
731 	}
732 
733 	ret = palmas_smps_write(palmas, addr, reg);
734 	if (ret)
735 		return ret;
736 
737 	if (rinfo->vsel_addr && reg_init->vsel) {
738 
739 		reg = reg_init->vsel;
740 
741 		ret = palmas_smps_write(palmas, rinfo->vsel_addr, reg);
742 		if (ret)
743 			return ret;
744 	}
745 
746 	if (reg_init->roof_floor && (id != PALMAS_REG_SMPS10_OUT1) &&
747 			(id != PALMAS_REG_SMPS10_OUT2)) {
748 		/* Enable externally controlled regulator */
749 		ret = palmas_smps_read(palmas, addr, &reg);
750 		if (ret < 0)
751 			return ret;
752 
753 		if (!(reg & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK)) {
754 			reg |= SMPS_CTRL_MODE_ON;
755 			ret = palmas_smps_write(palmas, addr, reg);
756 			if (ret < 0)
757 				return ret;
758 		}
759 		return palmas_regulator_config_external(palmas, id, reg_init);
760 	}
761 	return 0;
762 }
763 
764 static int palmas_ldo_init(struct palmas *palmas, int id,
765 		struct palmas_reg_init *reg_init)
766 {
767 	unsigned int reg;
768 	unsigned int addr;
769 	int ret;
770 	struct palmas_pmic_driver_data *ddata = palmas->pmic_ddata;
771 	struct palmas_regs_info *rinfo = &ddata->palmas_regs_info[id];
772 
773 	addr = rinfo->ctrl_addr;
774 
775 	ret = palmas_ldo_read(palmas, addr, &reg);
776 	if (ret)
777 		return ret;
778 
779 	if (reg_init->warm_reset)
780 		reg |= PALMAS_LDO1_CTRL_WR_S;
781 	else
782 		reg &= ~PALMAS_LDO1_CTRL_WR_S;
783 
784 	if (reg_init->mode_sleep)
785 		reg |= PALMAS_LDO1_CTRL_MODE_SLEEP;
786 	else
787 		reg &= ~PALMAS_LDO1_CTRL_MODE_SLEEP;
788 
789 	ret = palmas_ldo_write(palmas, addr, reg);
790 	if (ret)
791 		return ret;
792 
793 	if (reg_init->roof_floor) {
794 		/* Enable externally controlled regulator */
795 		ret = palmas_update_bits(palmas, PALMAS_LDO_BASE,
796 				addr, PALMAS_LDO1_CTRL_MODE_ACTIVE,
797 				PALMAS_LDO1_CTRL_MODE_ACTIVE);
798 		if (ret < 0) {
799 			dev_err(palmas->dev,
800 				"LDO Register 0x%02x update failed %d\n",
801 				addr, ret);
802 			return ret;
803 		}
804 		return palmas_regulator_config_external(palmas, id, reg_init);
805 	}
806 	return 0;
807 }
808 
809 static int palmas_extreg_init(struct palmas *palmas, int id,
810 		struct palmas_reg_init *reg_init)
811 {
812 	unsigned int addr;
813 	int ret;
814 	unsigned int val = 0;
815 	struct palmas_pmic_driver_data *ddata = palmas->pmic_ddata;
816 	struct palmas_regs_info *rinfo = &ddata->palmas_regs_info[id];
817 
818 	addr = rinfo->ctrl_addr;
819 
820 	if (reg_init->mode_sleep)
821 		val = PALMAS_REGEN1_CTRL_MODE_SLEEP;
822 
823 	ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE,
824 			addr, PALMAS_REGEN1_CTRL_MODE_SLEEP, val);
825 	if (ret < 0) {
826 		dev_err(palmas->dev, "Resource reg 0x%02x update failed %d\n",
827 			addr, ret);
828 		return ret;
829 	}
830 
831 	if (reg_init->roof_floor) {
832 		/* Enable externally controlled regulator */
833 		ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE,
834 				addr, PALMAS_REGEN1_CTRL_MODE_ACTIVE,
835 				PALMAS_REGEN1_CTRL_MODE_ACTIVE);
836 		if (ret < 0) {
837 			dev_err(palmas->dev,
838 				"Resource Register 0x%02x update failed %d\n",
839 				addr, ret);
840 			return ret;
841 		}
842 		return palmas_regulator_config_external(palmas, id, reg_init);
843 	}
844 	return 0;
845 }
846 
847 static void palmas_enable_ldo8_track(struct palmas *palmas)
848 {
849 	unsigned int reg;
850 	unsigned int addr;
851 	int ret;
852 	struct palmas_pmic_driver_data *ddata = palmas->pmic_ddata;
853 	struct palmas_regs_info *rinfo;
854 
855 	rinfo = &ddata->palmas_regs_info[PALMAS_REG_LDO8];
856 	addr = rinfo->ctrl_addr;
857 
858 	ret = palmas_ldo_read(palmas, addr, &reg);
859 	if (ret) {
860 		dev_err(palmas->dev, "Error in reading ldo8 control reg\n");
861 		return;
862 	}
863 
864 	reg |= PALMAS_LDO8_CTRL_LDO_TRACKING_EN;
865 	ret = palmas_ldo_write(palmas, addr, reg);
866 	if (ret < 0) {
867 		dev_err(palmas->dev, "Error in enabling tracking mode\n");
868 		return;
869 	}
870 	/*
871 	 * When SMPS45 is set to off and LDO8 tracking is enabled, the LDO8
872 	 * output is defined by the LDO8_VOLTAGE.VSEL register divided by two,
873 	 * and can be set from 0.45 to 1.65 V.
874 	 */
875 	addr = rinfo->vsel_addr;
876 	ret = palmas_ldo_read(palmas, addr, &reg);
877 	if (ret) {
878 		dev_err(palmas->dev, "Error in reading ldo8 voltage reg\n");
879 		return;
880 	}
881 
882 	reg = (reg << 1) & PALMAS_LDO8_VOLTAGE_VSEL_MASK;
883 	ret = palmas_ldo_write(palmas, addr, reg);
884 	if (ret < 0)
885 		dev_err(palmas->dev, "Error in setting ldo8 voltage reg\n");
886 
887 	return;
888 }
889 
890 static int palmas_ldo_registration(struct palmas_pmic *pmic,
891 				   struct palmas_pmic_driver_data *ddata,
892 				   struct palmas_pmic_platform_data *pdata,
893 				   const char *pdev_name,
894 				   struct regulator_config config)
895 {
896 	int id, ret;
897 	struct regulator_dev *rdev;
898 	struct palmas_reg_init *reg_init;
899 	struct palmas_regs_info *rinfo;
900 	struct regulator_desc *desc;
901 
902 	for (id = ddata->ldo_begin; id < ddata->max_reg; id++) {
903 		if (pdata && pdata->reg_init[id])
904 			reg_init = pdata->reg_init[id];
905 		else
906 			reg_init = NULL;
907 
908 		rinfo = &ddata->palmas_regs_info[id];
909 		/* Miss out regulators which are not available due
910 		 * to alternate functions.
911 		 */
912 
913 		/* Register the regulators */
914 		desc = &pmic->desc[id];
915 		desc->name = rinfo->name;
916 		desc->id = id;
917 		desc->type = REGULATOR_VOLTAGE;
918 		desc->owner = THIS_MODULE;
919 
920 		if (id < PALMAS_REG_REGEN1) {
921 			desc->n_voltages = PALMAS_LDO_NUM_VOLTAGES;
922 			if (reg_init && reg_init->roof_floor)
923 				desc->ops = &palmas_ops_ext_control_ldo;
924 			else
925 				desc->ops = &palmas_ops_ldo;
926 			desc->min_uV = 900000;
927 			desc->uV_step = 50000;
928 			desc->linear_min_sel = 1;
929 			desc->enable_time = 500;
930 			desc->vsel_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
931 							    rinfo->vsel_addr);
932 			desc->vsel_mask = PALMAS_LDO1_VOLTAGE_VSEL_MASK;
933 			desc->enable_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
934 							      rinfo->ctrl_addr);
935 			desc->enable_mask = PALMAS_LDO1_CTRL_MODE_ACTIVE;
936 
937 			/* Check if LDO8 is in tracking mode or not */
938 			if (pdata && (id == PALMAS_REG_LDO8) &&
939 			    pdata->enable_ldo8_tracking) {
940 				palmas_enable_ldo8_track(pmic->palmas);
941 				desc->min_uV = 450000;
942 				desc->uV_step = 25000;
943 			}
944 
945 			/* LOD6 in vibrator mode will have enable time 2000us */
946 			if (pdata && pdata->ldo6_vibrator &&
947 			    (id == PALMAS_REG_LDO6))
948 				desc->enable_time = 2000;
949 
950 			if (id == PALMAS_REG_LDO9) {
951 				desc->ops = &palmas_ops_ldo9;
952 				desc->bypass_reg = desc->enable_reg;
953 				desc->bypass_val_on =
954 						PALMAS_LDO9_CTRL_LDO_BYPASS_EN;
955 				desc->bypass_mask =
956 						PALMAS_LDO9_CTRL_LDO_BYPASS_EN;
957 			}
958 		} else {
959 			if (!ddata->has_regen3 && id == PALMAS_REG_REGEN3)
960 				continue;
961 
962 			desc->n_voltages = 1;
963 			if (reg_init && reg_init->roof_floor)
964 				desc->ops = &palmas_ops_ext_control_extreg;
965 			else
966 				desc->ops = &palmas_ops_extreg;
967 			desc->enable_reg =
968 					PALMAS_BASE_TO_REG(PALMAS_RESOURCE_BASE,
969 							   rinfo->ctrl_addr);
970 			desc->enable_mask = PALMAS_REGEN1_CTRL_MODE_ACTIVE;
971 		}
972 
973 		if (pdata)
974 			config.init_data = pdata->reg_data[id];
975 		else
976 			config.init_data = NULL;
977 
978 		desc->supply_name = rinfo->sname;
979 		config.of_node = ddata->palmas_matches[id].of_node;
980 
981 		rdev = devm_regulator_register(pmic->dev, desc, &config);
982 		if (IS_ERR(rdev)) {
983 			dev_err(pmic->dev,
984 				"failed to register %s regulator\n",
985 				pdev_name);
986 			return PTR_ERR(rdev);
987 		}
988 
989 		/* Initialise sleep/init values from platform data */
990 		if (pdata) {
991 			reg_init = pdata->reg_init[id];
992 			if (reg_init) {
993 				if (id <= ddata->ldo_end)
994 					ret = palmas_ldo_init(pmic->palmas, id,
995 							      reg_init);
996 				else
997 					ret = palmas_extreg_init(pmic->palmas,
998 								 id, reg_init);
999 				if (ret)
1000 					return ret;
1001 			}
1002 		}
1003 	}
1004 
1005 	return 0;
1006 }
1007 
1008 static int tps65917_ldo_registration(struct palmas_pmic *pmic,
1009 				     struct palmas_pmic_driver_data *ddata,
1010 				     struct palmas_pmic_platform_data *pdata,
1011 				     const char *pdev_name,
1012 				     struct regulator_config config)
1013 {
1014 	int id, ret;
1015 	struct regulator_dev *rdev;
1016 	struct palmas_reg_init *reg_init;
1017 	struct palmas_regs_info *rinfo;
1018 	struct regulator_desc *desc;
1019 
1020 	for (id = ddata->ldo_begin; id < ddata->max_reg; id++) {
1021 		if (pdata && pdata->reg_init[id])
1022 			reg_init = pdata->reg_init[id];
1023 		else
1024 			reg_init = NULL;
1025 
1026 		/* Miss out regulators which are not available due
1027 		 * to alternate functions.
1028 		 */
1029 		rinfo = &ddata->palmas_regs_info[id];
1030 
1031 		/* Register the regulators */
1032 		desc = &pmic->desc[id];
1033 		desc->name = rinfo->name;
1034 		desc->id = id;
1035 		desc->type = REGULATOR_VOLTAGE;
1036 		desc->owner = THIS_MODULE;
1037 
1038 		if (id < TPS65917_REG_REGEN1) {
1039 			desc->n_voltages = PALMAS_LDO_NUM_VOLTAGES;
1040 			if (reg_init && reg_init->roof_floor)
1041 				desc->ops = &palmas_ops_ext_control_ldo;
1042 			else
1043 				desc->ops = &tps65917_ops_ldo;
1044 			desc->min_uV = 900000;
1045 			desc->uV_step = 50000;
1046 			desc->linear_min_sel = 1;
1047 			desc->enable_time = 500;
1048 			desc->vsel_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
1049 							    rinfo->vsel_addr);
1050 			desc->vsel_mask = PALMAS_LDO1_VOLTAGE_VSEL_MASK;
1051 			desc->enable_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
1052 							      rinfo->ctrl_addr);
1053 			desc->enable_mask = PALMAS_LDO1_CTRL_MODE_ACTIVE;
1054 			/*
1055 			 * To be confirmed. Discussion on going with PMIC Team.
1056 			 * It is of the order of ~60mV/uS.
1057 			 */
1058 			desc->ramp_delay = 2500;
1059 			if (id == TPS65917_REG_LDO1 ||
1060 			    id == TPS65917_REG_LDO2) {
1061 				desc->ops = &tps65917_ops_ldo_1_2;
1062 				desc->bypass_reg = desc->enable_reg;
1063 				desc->bypass_val_on =
1064 						TPS65917_LDO1_CTRL_BYPASS_EN;
1065 				desc->bypass_mask =
1066 						TPS65917_LDO1_CTRL_BYPASS_EN;
1067 			}
1068 		} else {
1069 			desc->n_voltages = 1;
1070 			if (reg_init && reg_init->roof_floor)
1071 				desc->ops = &palmas_ops_ext_control_extreg;
1072 			else
1073 				desc->ops = &palmas_ops_extreg;
1074 			desc->enable_reg =
1075 					PALMAS_BASE_TO_REG(PALMAS_RESOURCE_BASE,
1076 							   rinfo->ctrl_addr);
1077 			desc->enable_mask = PALMAS_REGEN1_CTRL_MODE_ACTIVE;
1078 		}
1079 
1080 		if (pdata)
1081 			config.init_data = pdata->reg_data[id];
1082 		else
1083 			config.init_data = NULL;
1084 
1085 		desc->supply_name = rinfo->sname;
1086 		config.of_node = ddata->palmas_matches[id].of_node;
1087 
1088 		rdev = devm_regulator_register(pmic->dev, desc, &config);
1089 		if (IS_ERR(rdev)) {
1090 			dev_err(pmic->dev,
1091 				"failed to register %s regulator\n",
1092 				pdev_name);
1093 			return PTR_ERR(rdev);
1094 		}
1095 
1096 		/* Initialise sleep/init values from platform data */
1097 		if (pdata) {
1098 			reg_init = pdata->reg_init[id];
1099 			if (reg_init) {
1100 				if (id < TPS65917_REG_REGEN1)
1101 					ret = palmas_ldo_init(pmic->palmas,
1102 							      id, reg_init);
1103 				else
1104 					ret = palmas_extreg_init(pmic->palmas,
1105 								 id, reg_init);
1106 				if (ret)
1107 					return ret;
1108 			}
1109 		}
1110 	}
1111 
1112 	return 0;
1113 }
1114 
1115 static int palmas_smps_registration(struct palmas_pmic *pmic,
1116 				    struct palmas_pmic_driver_data *ddata,
1117 				    struct palmas_pmic_platform_data *pdata,
1118 				    const char *pdev_name,
1119 				    struct regulator_config config)
1120 {
1121 	int id, ret;
1122 	unsigned int addr, reg;
1123 	struct regulator_dev *rdev;
1124 	struct palmas_reg_init *reg_init;
1125 	struct palmas_regs_info *rinfo;
1126 	struct regulator_desc *desc;
1127 
1128 	for (id = ddata->smps_start; id <= ddata->smps_end; id++) {
1129 		bool ramp_delay_support = false;
1130 
1131 		/*
1132 		 * Miss out regulators which are not available due
1133 		 * to slaving configurations.
1134 		 */
1135 		switch (id) {
1136 		case PALMAS_REG_SMPS12:
1137 		case PALMAS_REG_SMPS3:
1138 			if (pmic->smps123)
1139 				continue;
1140 			if (id == PALMAS_REG_SMPS12)
1141 				ramp_delay_support = true;
1142 			break;
1143 		case PALMAS_REG_SMPS123:
1144 			if (!pmic->smps123)
1145 				continue;
1146 			ramp_delay_support = true;
1147 			break;
1148 		case PALMAS_REG_SMPS45:
1149 		case PALMAS_REG_SMPS7:
1150 			if (pmic->smps457)
1151 				continue;
1152 			if (id == PALMAS_REG_SMPS45)
1153 				ramp_delay_support = true;
1154 			break;
1155 		case PALMAS_REG_SMPS457:
1156 			if (!pmic->smps457)
1157 				continue;
1158 			ramp_delay_support = true;
1159 			break;
1160 		case PALMAS_REG_SMPS10_OUT1:
1161 		case PALMAS_REG_SMPS10_OUT2:
1162 			if (!PALMAS_PMIC_HAS(pmic->palmas, SMPS10_BOOST))
1163 				continue;
1164 		}
1165 		rinfo = &ddata->palmas_regs_info[id];
1166 		desc = &pmic->desc[id];
1167 
1168 		if ((id == PALMAS_REG_SMPS6) || (id == PALMAS_REG_SMPS8))
1169 			ramp_delay_support = true;
1170 
1171 		if (ramp_delay_support) {
1172 			addr = rinfo->tstep_addr;
1173 			ret = palmas_smps_read(pmic->palmas, addr, &reg);
1174 			if (ret < 0) {
1175 				dev_err(pmic->dev,
1176 					"reading TSTEP reg failed: %d\n", ret);
1177 				return ret;
1178 			}
1179 			desc->ramp_delay = palmas_smps_ramp_delay[reg & 0x3];
1180 			pmic->ramp_delay[id] = desc->ramp_delay;
1181 		}
1182 
1183 		/* Initialise sleep/init values from platform data */
1184 		if (pdata && pdata->reg_init[id]) {
1185 			reg_init = pdata->reg_init[id];
1186 			ret = palmas_smps_init(pmic->palmas, id, reg_init);
1187 			if (ret)
1188 				return ret;
1189 		} else {
1190 			reg_init = NULL;
1191 		}
1192 
1193 		/* Register the regulators */
1194 		desc->name = rinfo->name;
1195 		desc->id = id;
1196 
1197 		switch (id) {
1198 		case PALMAS_REG_SMPS10_OUT1:
1199 		case PALMAS_REG_SMPS10_OUT2:
1200 			desc->n_voltages = PALMAS_SMPS10_NUM_VOLTAGES;
1201 			desc->ops = &palmas_ops_smps10;
1202 			desc->vsel_reg = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
1203 							    PALMAS_SMPS10_CTRL);
1204 			desc->vsel_mask = SMPS10_VSEL;
1205 			desc->enable_reg = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
1206 							    PALMAS_SMPS10_CTRL);
1207 			if (id == PALMAS_REG_SMPS10_OUT1)
1208 				desc->enable_mask = SMPS10_SWITCH_EN;
1209 			else
1210 				desc->enable_mask = SMPS10_BOOST_EN;
1211 			desc->bypass_reg = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
1212 							    PALMAS_SMPS10_CTRL);
1213 			desc->bypass_val_on = SMPS10_BYPASS_EN;
1214 			desc->bypass_mask = SMPS10_BYPASS_EN;
1215 			desc->min_uV = 3750000;
1216 			desc->uV_step = 1250000;
1217 			break;
1218 		default:
1219 			/*
1220 			 * Read and store the RANGE bit for later use
1221 			 * This must be done before regulator is probed,
1222 			 * otherwise we error in probe with unsupportable
1223 			 * ranges. Read the current smps mode for later use.
1224 			 */
1225 			addr = rinfo->vsel_addr;
1226 			desc->n_linear_ranges = 3;
1227 
1228 			ret = palmas_smps_read(pmic->palmas, addr, &reg);
1229 			if (ret)
1230 				return ret;
1231 			if (reg & PALMAS_SMPS12_VOLTAGE_RANGE)
1232 				pmic->range[id] = 1;
1233 			if (pmic->range[id])
1234 				desc->linear_ranges = smps_high_ranges;
1235 			else
1236 				desc->linear_ranges = smps_low_ranges;
1237 
1238 			if (reg_init && reg_init->roof_floor)
1239 				desc->ops = &palmas_ops_ext_control_smps;
1240 			else
1241 				desc->ops = &palmas_ops_smps;
1242 			desc->n_voltages = PALMAS_SMPS_NUM_VOLTAGES;
1243 			desc->vsel_reg = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
1244 							    rinfo->vsel_addr);
1245 			desc->vsel_mask = PALMAS_SMPS12_VOLTAGE_VSEL_MASK;
1246 
1247 			/* Read the smps mode for later use. */
1248 			addr = rinfo->ctrl_addr;
1249 			ret = palmas_smps_read(pmic->palmas, addr, &reg);
1250 			if (ret)
1251 				return ret;
1252 			pmic->current_reg_mode[id] = reg &
1253 					PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
1254 
1255 			desc->enable_reg = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
1256 							      rinfo->ctrl_addr);
1257 			desc->enable_mask = PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
1258 			/* set_mode overrides this value */
1259 			desc->enable_val = SMPS_CTRL_MODE_ON;
1260 		}
1261 
1262 		desc->type = REGULATOR_VOLTAGE;
1263 		desc->owner = THIS_MODULE;
1264 
1265 		if (pdata)
1266 			config.init_data = pdata->reg_data[id];
1267 		else
1268 			config.init_data = NULL;
1269 
1270 		desc->supply_name = rinfo->sname;
1271 		config.of_node = ddata->palmas_matches[id].of_node;
1272 
1273 		rdev = devm_regulator_register(pmic->dev, desc, &config);
1274 		if (IS_ERR(rdev)) {
1275 			dev_err(pmic->dev,
1276 				"failed to register %s regulator\n",
1277 				pdev_name);
1278 			return PTR_ERR(rdev);
1279 		}
1280 	}
1281 
1282 	return 0;
1283 }
1284 
1285 static int tps65917_smps_registration(struct palmas_pmic *pmic,
1286 				      struct palmas_pmic_driver_data *ddata,
1287 				      struct palmas_pmic_platform_data *pdata,
1288 				      const char *pdev_name,
1289 				      struct regulator_config config)
1290 {
1291 	int id, ret;
1292 	unsigned int addr, reg;
1293 	struct regulator_dev *rdev;
1294 	struct palmas_reg_init *reg_init;
1295 	struct palmas_regs_info *rinfo;
1296 	struct regulator_desc *desc;
1297 
1298 	for (id = ddata->smps_start; id <= ddata->smps_end; id++) {
1299 		/*
1300 		 * Miss out regulators which are not available due
1301 		 * to slaving configurations.
1302 		 */
1303 		desc = &pmic->desc[id];
1304 		desc->n_linear_ranges = 3;
1305 		if ((id == TPS65917_REG_SMPS2 || id == TPS65917_REG_SMPS1) &&
1306 		    pmic->smps12)
1307 			continue;
1308 
1309 		/* Initialise sleep/init values from platform data */
1310 		if (pdata && pdata->reg_init[id]) {
1311 			reg_init = pdata->reg_init[id];
1312 			ret = palmas_smps_init(pmic->palmas, id, reg_init);
1313 			if (ret)
1314 				return ret;
1315 		} else {
1316 			reg_init = NULL;
1317 		}
1318 		rinfo = &ddata->palmas_regs_info[id];
1319 
1320 		/* Register the regulators */
1321 		desc->name = rinfo->name;
1322 		desc->id = id;
1323 
1324 		/*
1325 		 * Read and store the RANGE bit for later use
1326 		 * This must be done before regulator is probed,
1327 		 * otherwise we error in probe with unsupportable
1328 		 * ranges. Read the current smps mode for later use.
1329 		 */
1330 		addr = rinfo->vsel_addr;
1331 
1332 		ret = palmas_smps_read(pmic->palmas, addr, &reg);
1333 		if (ret)
1334 			return ret;
1335 		if (reg & TPS65917_SMPS1_VOLTAGE_RANGE)
1336 			pmic->range[id] = 1;
1337 
1338 		if (pmic->range[id])
1339 			desc->linear_ranges = smps_high_ranges;
1340 		else
1341 			desc->linear_ranges = smps_low_ranges;
1342 
1343 		if (reg_init && reg_init->roof_floor)
1344 			desc->ops = &tps65917_ops_ext_control_smps;
1345 		else
1346 			desc->ops = &tps65917_ops_smps;
1347 		desc->n_voltages = PALMAS_SMPS_NUM_VOLTAGES;
1348 		desc->vsel_reg = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
1349 						    rinfo->vsel_addr);
1350 		desc->vsel_mask = PALMAS_SMPS12_VOLTAGE_VSEL_MASK;
1351 		desc->ramp_delay = 2500;
1352 
1353 		/* Read the smps mode for later use. */
1354 		addr = rinfo->ctrl_addr;
1355 		ret = palmas_smps_read(pmic->palmas, addr, &reg);
1356 		if (ret)
1357 			return ret;
1358 		pmic->current_reg_mode[id] = reg &
1359 				PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
1360 		desc->enable_reg = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
1361 						      rinfo->ctrl_addr);
1362 		desc->enable_mask = PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
1363 		/* set_mode overrides this value */
1364 		desc->enable_val = SMPS_CTRL_MODE_ON;
1365 
1366 		desc->type = REGULATOR_VOLTAGE;
1367 		desc->owner = THIS_MODULE;
1368 
1369 		if (pdata)
1370 			config.init_data = pdata->reg_data[id];
1371 		else
1372 			config.init_data = NULL;
1373 
1374 		desc->supply_name = rinfo->sname;
1375 		config.of_node = ddata->palmas_matches[id].of_node;
1376 
1377 		rdev = devm_regulator_register(pmic->dev, desc, &config);
1378 		if (IS_ERR(rdev)) {
1379 			dev_err(pmic->dev,
1380 				"failed to register %s regulator\n",
1381 				pdev_name);
1382 			return PTR_ERR(rdev);
1383 		}
1384 	}
1385 
1386 	return 0;
1387 }
1388 
1389 static struct of_regulator_match palmas_matches[] = {
1390 	{ .name = "smps12", },
1391 	{ .name = "smps123", },
1392 	{ .name = "smps3", },
1393 	{ .name = "smps45", },
1394 	{ .name = "smps457", },
1395 	{ .name = "smps6", },
1396 	{ .name = "smps7", },
1397 	{ .name = "smps8", },
1398 	{ .name = "smps9", },
1399 	{ .name = "smps10_out2", },
1400 	{ .name = "smps10_out1", },
1401 	{ .name = "ldo1", },
1402 	{ .name = "ldo2", },
1403 	{ .name = "ldo3", },
1404 	{ .name = "ldo4", },
1405 	{ .name = "ldo5", },
1406 	{ .name = "ldo6", },
1407 	{ .name = "ldo7", },
1408 	{ .name = "ldo8", },
1409 	{ .name = "ldo9", },
1410 	{ .name = "ldoln", },
1411 	{ .name = "ldousb", },
1412 	{ .name = "regen1", },
1413 	{ .name = "regen2", },
1414 	{ .name = "regen3", },
1415 	{ .name = "sysen1", },
1416 	{ .name = "sysen2", },
1417 };
1418 
1419 static struct of_regulator_match tps65917_matches[] = {
1420 	{ .name = "smps1", },
1421 	{ .name = "smps2", },
1422 	{ .name = "smps3", },
1423 	{ .name = "smps4", },
1424 	{ .name = "smps5", },
1425 	{ .name = "smps12",},
1426 	{ .name = "ldo1", },
1427 	{ .name = "ldo2", },
1428 	{ .name = "ldo3", },
1429 	{ .name = "ldo4", },
1430 	{ .name = "ldo5", },
1431 	{ .name = "regen1", },
1432 	{ .name = "regen2", },
1433 	{ .name = "regen3", },
1434 	{ .name = "sysen1", },
1435 	{ .name = "sysen2", },
1436 };
1437 
1438 static struct palmas_pmic_driver_data palmas_ddata = {
1439 	.smps_start = PALMAS_REG_SMPS12,
1440 	.smps_end = PALMAS_REG_SMPS10_OUT1,
1441 	.ldo_begin = PALMAS_REG_LDO1,
1442 	.ldo_end = PALMAS_REG_LDOUSB,
1443 	.max_reg = PALMAS_NUM_REGS,
1444 	.has_regen3 = true,
1445 	.palmas_regs_info = palmas_generic_regs_info,
1446 	.palmas_matches = palmas_matches,
1447 	.sleep_req_info = palma_sleep_req_info,
1448 	.smps_register = palmas_smps_registration,
1449 	.ldo_register = palmas_ldo_registration,
1450 };
1451 
1452 static struct palmas_pmic_driver_data tps65917_ddata = {
1453 	.smps_start = TPS65917_REG_SMPS1,
1454 	.smps_end = TPS65917_REG_SMPS12,
1455 	.ldo_begin = TPS65917_REG_LDO1,
1456 	.ldo_end = TPS65917_REG_LDO5,
1457 	.max_reg = TPS65917_NUM_REGS,
1458 	.has_regen3 = true,
1459 	.palmas_regs_info = tps65917_regs_info,
1460 	.palmas_matches = tps65917_matches,
1461 	.sleep_req_info = tps65917_sleep_req_info,
1462 	.smps_register = tps65917_smps_registration,
1463 	.ldo_register = tps65917_ldo_registration,
1464 };
1465 
1466 static int palmas_dt_to_pdata(struct device *dev,
1467 			      struct device_node *node,
1468 			      struct palmas_pmic_platform_data *pdata,
1469 			      struct palmas_pmic_driver_data *ddata)
1470 {
1471 	struct device_node *regulators;
1472 	u32 prop;
1473 	int idx, ret;
1474 
1475 	regulators = of_get_child_by_name(node, "regulators");
1476 	if (!regulators) {
1477 		dev_info(dev, "regulator node not found\n");
1478 		return 0;
1479 	}
1480 
1481 	ret = of_regulator_match(dev, regulators, ddata->palmas_matches,
1482 				 ddata->max_reg);
1483 	of_node_put(regulators);
1484 	if (ret < 0) {
1485 		dev_err(dev, "Error parsing regulator init data: %d\n", ret);
1486 		return 0;
1487 	}
1488 
1489 	for (idx = 0; idx < ddata->max_reg; idx++) {
1490 		struct of_regulator_match *match;
1491 		struct palmas_reg_init *rinit;
1492 		struct device_node *np;
1493 
1494 		match = &ddata->palmas_matches[idx];
1495 		np = match->of_node;
1496 
1497 		if (!match->init_data || !np)
1498 			continue;
1499 
1500 		rinit = devm_kzalloc(dev, sizeof(*rinit), GFP_KERNEL);
1501 		if (!rinit)
1502 			return -ENOMEM;
1503 
1504 		pdata->reg_data[idx] = match->init_data;
1505 		pdata->reg_init[idx] = rinit;
1506 
1507 		rinit->warm_reset = of_property_read_bool(np, "ti,warm-reset");
1508 		ret = of_property_read_u32(np, "ti,roof-floor", &prop);
1509 		/* EINVAL: Property not found */
1510 		if (ret != -EINVAL) {
1511 			int econtrol;
1512 
1513 			/* use default value, when no value is specified */
1514 			econtrol = PALMAS_EXT_CONTROL_NSLEEP;
1515 			if (!ret) {
1516 				switch (prop) {
1517 				case 1:
1518 					econtrol = PALMAS_EXT_CONTROL_ENABLE1;
1519 					break;
1520 				case 2:
1521 					econtrol = PALMAS_EXT_CONTROL_ENABLE2;
1522 					break;
1523 				case 3:
1524 					econtrol = PALMAS_EXT_CONTROL_NSLEEP;
1525 					break;
1526 				default:
1527 					WARN_ON(1);
1528 					dev_warn(dev,
1529 						 "%s: Invalid roof-floor option: %u\n",
1530 						 match->name, prop);
1531 					break;
1532 				}
1533 			}
1534 			rinit->roof_floor = econtrol;
1535 		}
1536 
1537 		ret = of_property_read_u32(np, "ti,mode-sleep", &prop);
1538 		if (!ret)
1539 			rinit->mode_sleep = prop;
1540 
1541 		ret = of_property_read_bool(np, "ti,smps-range");
1542 		if (ret)
1543 			rinit->vsel = PALMAS_SMPS12_VOLTAGE_RANGE;
1544 
1545 		if (idx == PALMAS_REG_LDO8)
1546 			pdata->enable_ldo8_tracking = of_property_read_bool(
1547 						np, "ti,enable-ldo8-tracking");
1548 	}
1549 
1550 	pdata->ldo6_vibrator = of_property_read_bool(node, "ti,ldo6-vibrator");
1551 
1552 	return 0;
1553 }
1554 
1555 static const struct of_device_id of_palmas_match_tbl[] = {
1556 	{
1557 		.compatible = "ti,palmas-pmic",
1558 		.data = &palmas_ddata,
1559 	},
1560 	{
1561 		.compatible = "ti,twl6035-pmic",
1562 		.data = &palmas_ddata,
1563 	},
1564 	{
1565 		.compatible = "ti,twl6036-pmic",
1566 		.data = &palmas_ddata,
1567 	},
1568 	{
1569 		.compatible = "ti,twl6037-pmic",
1570 		.data = &palmas_ddata,
1571 	},
1572 	{
1573 		.compatible = "ti,tps65913-pmic",
1574 		.data = &palmas_ddata,
1575 	},
1576 	{
1577 		.compatible = "ti,tps65914-pmic",
1578 		.data = &palmas_ddata,
1579 	},
1580 	{
1581 		.compatible = "ti,tps80036-pmic",
1582 		.data = &palmas_ddata,
1583 	},
1584 	{
1585 		.compatible = "ti,tps659038-pmic",
1586 		.data = &palmas_ddata,
1587 	},
1588 	 {
1589 		.compatible = "ti,tps65917-pmic",
1590 		.data = &tps65917_ddata,
1591 	},
1592 	{ /* end */ }
1593 };
1594 
1595 static int palmas_regulators_probe(struct platform_device *pdev)
1596 {
1597 	struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
1598 	struct palmas_pmic_platform_data *pdata = dev_get_platdata(&pdev->dev);
1599 	struct device_node *node = pdev->dev.of_node;
1600 	struct palmas_pmic_driver_data *driver_data;
1601 	struct regulator_config config = { };
1602 	struct palmas_pmic *pmic;
1603 	const char *pdev_name;
1604 	const struct of_device_id *match;
1605 	int ret = 0;
1606 	unsigned int reg;
1607 
1608 	match = of_match_device(of_match_ptr(of_palmas_match_tbl), &pdev->dev);
1609 
1610 	if (!match)
1611 		return -ENODATA;
1612 
1613 	driver_data = (struct palmas_pmic_driver_data *)match->data;
1614 	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
1615 	if (!pdata)
1616 		return -ENOMEM;
1617 
1618 	pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
1619 	if (!pmic)
1620 		return -ENOMEM;
1621 
1622 	if (of_device_is_compatible(node, "ti,tps659038-pmic")) {
1623 		palmas_generic_regs_info[PALMAS_REG_REGEN2].ctrl_addr =
1624 							TPS659038_REGEN2_CTRL;
1625 		palmas_ddata.has_regen3 = false;
1626 	}
1627 
1628 	pmic->dev = &pdev->dev;
1629 	pmic->palmas = palmas;
1630 	palmas->pmic = pmic;
1631 	platform_set_drvdata(pdev, pmic);
1632 	pmic->palmas->pmic_ddata = driver_data;
1633 
1634 	ret = palmas_dt_to_pdata(&pdev->dev, node, pdata, driver_data);
1635 	if (ret)
1636 		return ret;
1637 
1638 	ret = palmas_smps_read(palmas, PALMAS_SMPS_CTRL, &reg);
1639 	if (ret)
1640 		return ret;
1641 
1642 	if (reg & PALMAS_SMPS_CTRL_SMPS12_SMPS123_EN) {
1643 		pmic->smps123 = 1;
1644 		pmic->smps12 = 1;
1645 	}
1646 
1647 	if (reg & PALMAS_SMPS_CTRL_SMPS45_SMPS457_EN)
1648 		pmic->smps457 = 1;
1649 
1650 	config.regmap = palmas->regmap[REGULATOR_SLAVE];
1651 	config.dev = &pdev->dev;
1652 	config.driver_data = pmic;
1653 	pdev_name = pdev->name;
1654 
1655 	ret = driver_data->smps_register(pmic, driver_data, pdata, pdev_name,
1656 					 config);
1657 	if (ret)
1658 		return ret;
1659 
1660 	ret = driver_data->ldo_register(pmic, driver_data, pdata, pdev_name,
1661 					config);
1662 
1663 	return ret;
1664 }
1665 
1666 static struct platform_driver palmas_driver = {
1667 	.driver = {
1668 		.name = "palmas-pmic",
1669 		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
1670 		.of_match_table = of_palmas_match_tbl,
1671 	},
1672 	.probe = palmas_regulators_probe,
1673 };
1674 
1675 static int __init palmas_init(void)
1676 {
1677 	return platform_driver_register(&palmas_driver);
1678 }
1679 subsys_initcall(palmas_init);
1680 
1681 static void __exit palmas_exit(void)
1682 {
1683 	platform_driver_unregister(&palmas_driver);
1684 }
1685 module_exit(palmas_exit);
1686 
1687 MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
1688 MODULE_DESCRIPTION("Palmas voltage regulator driver");
1689 MODULE_LICENSE("GPL");
1690 MODULE_ALIAS("platform:palmas-pmic");
1691 MODULE_DEVICE_TABLE(of, of_palmas_match_tbl);
1692