1 /*
2  * pv88080-regulator.c - Regulator device driver for PV88080
3  * Copyright (C) 2016  Powerventure Semiconductor Ltd.
4  *
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU General Public License
7  * as published by the Free Software Foundation; either version 2
8  * of the License, or (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  */
15 
16 #include <linux/err.h>
17 #include <linux/i2c.h>
18 #include <linux/module.h>
19 #include <linux/of.h>
20 #include <linux/init.h>
21 #include <linux/slab.h>
22 #include <linux/regulator/driver.h>
23 #include <linux/regulator/machine.h>
24 #include <linux/regmap.h>
25 #include <linux/irq.h>
26 #include <linux/interrupt.h>
27 #include <linux/regulator/of_regulator.h>
28 #include "pv88080-regulator.h"
29 
30 #define PV88080_MAX_REGULATORS	4
31 
32 /* PV88080 REGULATOR IDs */
33 enum {
34 	/* BUCKs */
35 	PV88080_ID_BUCK1,
36 	PV88080_ID_BUCK2,
37 	PV88080_ID_BUCK3,
38 	PV88080_ID_HVBUCK,
39 };
40 
41 enum pv88080_types {
42 	TYPE_PV88080_AA,
43 	TYPE_PV88080_BA,
44 };
45 
46 struct pv88080_regulator {
47 	struct regulator_desc desc;
48 	/* Current limiting */
49 	unsigned int n_current_limits;
50 	const int *current_limits;
51 	unsigned int limit_mask;
52 	unsigned int mode_reg;
53 	unsigned int limit_reg;
54 	unsigned int conf2;
55 	unsigned int conf5;
56 };
57 
58 struct pv88080 {
59 	struct device *dev;
60 	struct regmap *regmap;
61 	struct regulator_dev *rdev[PV88080_MAX_REGULATORS];
62 	unsigned long type;
63 	const struct pv88080_compatible_regmap *regmap_config;
64 };
65 
66 struct pv88080_buck_voltage {
67 	int min_uV;
68 	int max_uV;
69 	int uV_step;
70 };
71 
72 struct pv88080_buck_regmap {
73 	/* REGS */
74 	int buck_enable_reg;
75 	int buck_vsel_reg;
76 	int buck_mode_reg;
77 	int buck_limit_reg;
78 	int buck_vdac_range_reg;
79 	int buck_vrange_gain_reg;
80 	/* MASKS */
81 	int buck_enable_mask;
82 	int buck_vsel_mask;
83 	int buck_limit_mask;
84 };
85 
86 struct pv88080_compatible_regmap {
87 	/* BUCK1, 2, 3 */
88 	struct pv88080_buck_regmap buck_regmap[PV88080_MAX_REGULATORS-1];
89 	/* HVBUCK */
90 	int hvbuck_enable_reg;
91 	int hvbuck_vsel_reg;
92 	int hvbuck_enable_mask;
93 	int hvbuck_vsel_mask;
94 };
95 
96 static const struct regmap_config pv88080_regmap_config = {
97 	.reg_bits = 8,
98 	.val_bits = 8,
99 };
100 
101 /* Current limits array (in uA) for BUCK1, BUCK2, BUCK3.
102  * Entry indexes corresponds to register values.
103  */
104 
105 static const int pv88080_buck1_limits[] = {
106 	3230000, 5130000, 6960000, 8790000
107 };
108 
109 static const int pv88080_buck23_limits[] = {
110 	1496000, 2393000, 3291000, 4189000
111 };
112 
113 static const struct pv88080_buck_voltage pv88080_buck_vol[2] = {
114 	{
115 		.min_uV = 600000,
116 		.max_uV = 1393750,
117 		.uV_step = 6250,
118 	},
119 	{
120 		.min_uV = 1400000,
121 		.max_uV = 2193750,
122 		.uV_step = 6250,
123 	},
124 };
125 
126 static const struct pv88080_compatible_regmap pv88080_aa_regs = {
127 	/* BUCK1 */
128 	.buck_regmap[0] = {
129 		.buck_enable_reg      = PV88080AA_REG_BUCK1_CONF0,
130 		.buck_vsel_reg        = PV88080AA_REG_BUCK1_CONF0,
131 		.buck_mode_reg        = PV88080AA_REG_BUCK1_CONF1,
132 		.buck_limit_reg       = PV88080AA_REG_BUCK1_CONF1,
133 		.buck_vdac_range_reg  = PV88080AA_REG_BUCK1_CONF2,
134 		.buck_vrange_gain_reg = PV88080AA_REG_BUCK1_CONF5,
135 		.buck_enable_mask     = PV88080_BUCK1_EN,
136 		.buck_vsel_mask       = PV88080_VBUCK1_MASK,
137 		.buck_limit_mask      = PV88080_BUCK1_ILIM_MASK,
138 	},
139 	/* BUCK2 */
140 	.buck_regmap[1] = {
141 		.buck_enable_reg      = PV88080AA_REG_BUCK2_CONF0,
142 		.buck_vsel_reg        = PV88080AA_REG_BUCK2_CONF0,
143 		.buck_mode_reg        = PV88080AA_REG_BUCK2_CONF1,
144 		.buck_limit_reg	      = PV88080AA_REG_BUCK2_CONF1,
145 		.buck_vdac_range_reg  = PV88080AA_REG_BUCK2_CONF2,
146 		.buck_vrange_gain_reg = PV88080AA_REG_BUCK2_CONF5,
147 		.buck_enable_mask	  = PV88080_BUCK2_EN,
148 		.buck_vsel_mask       = PV88080_VBUCK2_MASK,
149 		.buck_limit_mask      = PV88080_BUCK2_ILIM_MASK,
150 	},
151 	/* BUCK3 */
152 	.buck_regmap[2] = {
153 		.buck_enable_reg	  = PV88080AA_REG_BUCK3_CONF0,
154 		.buck_vsel_reg        = PV88080AA_REG_BUCK3_CONF0,
155 		.buck_mode_reg        = PV88080AA_REG_BUCK3_CONF1,
156 		.buck_limit_reg	      = PV88080AA_REG_BUCK3_CONF1,
157 		.buck_vdac_range_reg  = PV88080AA_REG_BUCK3_CONF2,
158 		.buck_vrange_gain_reg = PV88080AA_REG_BUCK3_CONF5,
159 		.buck_enable_mask	  = PV88080_BUCK3_EN,
160 		.buck_vsel_mask       = PV88080_VBUCK3_MASK,
161 		.buck_limit_mask      = PV88080_BUCK3_ILIM_MASK,
162 	},
163 	/* HVBUCK */
164 	.hvbuck_enable_reg	      = PV88080AA_REG_HVBUCK_CONF2,
165 	.hvbuck_vsel_reg          = PV88080AA_REG_HVBUCK_CONF1,
166 	.hvbuck_enable_mask       = PV88080_HVBUCK_EN,
167 	.hvbuck_vsel_mask         = PV88080_VHVBUCK_MASK,
168 };
169 
170 static const struct pv88080_compatible_regmap pv88080_ba_regs = {
171 	/* BUCK1 */
172 	.buck_regmap[0] = {
173 		.buck_enable_reg	  = PV88080BA_REG_BUCK1_CONF0,
174 		.buck_vsel_reg        = PV88080BA_REG_BUCK1_CONF0,
175 		.buck_mode_reg        = PV88080BA_REG_BUCK1_CONF1,
176 		.buck_limit_reg       = PV88080BA_REG_BUCK1_CONF1,
177 		.buck_vdac_range_reg  = PV88080BA_REG_BUCK1_CONF2,
178 		.buck_vrange_gain_reg = PV88080BA_REG_BUCK1_CONF5,
179 		.buck_enable_mask     = PV88080_BUCK1_EN,
180 		.buck_vsel_mask       = PV88080_VBUCK1_MASK,
181 		.buck_limit_mask	  = PV88080_BUCK1_ILIM_MASK,
182 	},
183 	/* BUCK2 */
184 	.buck_regmap[1] = {
185 		.buck_enable_reg	  = PV88080BA_REG_BUCK2_CONF0,
186 		.buck_vsel_reg        = PV88080BA_REG_BUCK2_CONF0,
187 		.buck_mode_reg        = PV88080BA_REG_BUCK2_CONF1,
188 		.buck_limit_reg	      = PV88080BA_REG_BUCK2_CONF1,
189 		.buck_vdac_range_reg  = PV88080BA_REG_BUCK2_CONF2,
190 		.buck_vrange_gain_reg = PV88080BA_REG_BUCK2_CONF5,
191 		.buck_enable_mask	  = PV88080_BUCK2_EN,
192 		.buck_vsel_mask       = PV88080_VBUCK2_MASK,
193 		.buck_limit_mask	  = PV88080_BUCK2_ILIM_MASK,
194 	},
195 	/* BUCK3 */
196 	.buck_regmap[2] = {
197 		.buck_enable_reg	  = PV88080BA_REG_BUCK3_CONF0,
198 		.buck_vsel_reg        = PV88080BA_REG_BUCK3_CONF0,
199 		.buck_mode_reg        = PV88080BA_REG_BUCK3_CONF1,
200 		.buck_limit_reg	      = PV88080BA_REG_BUCK3_CONF1,
201 		.buck_vdac_range_reg  = PV88080BA_REG_BUCK3_CONF2,
202 		.buck_vrange_gain_reg = PV88080BA_REG_BUCK3_CONF5,
203 		.buck_enable_mask	  = PV88080_BUCK3_EN,
204 		.buck_vsel_mask       = PV88080_VBUCK3_MASK,
205 		.buck_limit_mask	  = PV88080_BUCK3_ILIM_MASK,
206 	},
207 	/* HVBUCK */
208 	.hvbuck_enable_reg	      = PV88080BA_REG_HVBUCK_CONF2,
209 	.hvbuck_vsel_reg          = PV88080BA_REG_HVBUCK_CONF1,
210 	.hvbuck_enable_mask       = PV88080_HVBUCK_EN,
211 	.hvbuck_vsel_mask		  = PV88080_VHVBUCK_MASK,
212 };
213 
214 #ifdef CONFIG_OF
215 static const struct of_device_id pv88080_dt_ids[] = {
216 	{ .compatible = "pvs,pv88080",    .data = (void *)TYPE_PV88080_AA },
217 	{ .compatible = "pvs,pv88080-aa", .data = (void *)TYPE_PV88080_AA },
218 	{ .compatible = "pvs,pv88080-ba", .data = (void *)TYPE_PV88080_BA },
219 	{},
220 };
221 MODULE_DEVICE_TABLE(of, pv88080_dt_ids);
222 #endif
223 
224 static unsigned int pv88080_buck_get_mode(struct regulator_dev *rdev)
225 {
226 	struct pv88080_regulator *info = rdev_get_drvdata(rdev);
227 	unsigned int data;
228 	int ret, mode = 0;
229 
230 	ret = regmap_read(rdev->regmap, info->mode_reg, &data);
231 	if (ret < 0)
232 		return ret;
233 
234 	switch (data & PV88080_BUCK1_MODE_MASK) {
235 	case PV88080_BUCK_MODE_SYNC:
236 		mode = REGULATOR_MODE_FAST;
237 		break;
238 	case PV88080_BUCK_MODE_AUTO:
239 		mode = REGULATOR_MODE_NORMAL;
240 		break;
241 	case PV88080_BUCK_MODE_SLEEP:
242 		mode = REGULATOR_MODE_STANDBY;
243 		break;
244 	default:
245 		return -EINVAL;
246 	}
247 
248 	return mode;
249 }
250 
251 static int pv88080_buck_set_mode(struct regulator_dev *rdev,
252 					unsigned int mode)
253 {
254 	struct pv88080_regulator *info = rdev_get_drvdata(rdev);
255 	int val = 0;
256 
257 	switch (mode) {
258 	case REGULATOR_MODE_FAST:
259 		val = PV88080_BUCK_MODE_SYNC;
260 		break;
261 	case REGULATOR_MODE_NORMAL:
262 		val = PV88080_BUCK_MODE_AUTO;
263 		break;
264 	case REGULATOR_MODE_STANDBY:
265 		val = PV88080_BUCK_MODE_SLEEP;
266 		break;
267 	default:
268 		return -EINVAL;
269 	}
270 
271 	return regmap_update_bits(rdev->regmap, info->mode_reg,
272 					PV88080_BUCK1_MODE_MASK, val);
273 }
274 
275 static int pv88080_set_current_limit(struct regulator_dev *rdev, int min,
276 				    int max)
277 {
278 	struct pv88080_regulator *info = rdev_get_drvdata(rdev);
279 	int i;
280 
281 	/* search for closest to maximum */
282 	for (i = info->n_current_limits; i >= 0; i--) {
283 		if (min <= info->current_limits[i]
284 			&& max >= info->current_limits[i]) {
285 				return regmap_update_bits(rdev->regmap,
286 					info->limit_reg,
287 					info->limit_mask,
288 					i << PV88080_BUCK1_ILIM_SHIFT);
289 		}
290 	}
291 
292 	return -EINVAL;
293 }
294 
295 static int pv88080_get_current_limit(struct regulator_dev *rdev)
296 {
297 	struct pv88080_regulator *info = rdev_get_drvdata(rdev);
298 	unsigned int data;
299 	int ret;
300 
301 	ret = regmap_read(rdev->regmap, info->limit_reg, &data);
302 	if (ret < 0)
303 		return ret;
304 
305 	data = (data & info->limit_mask) >> PV88080_BUCK1_ILIM_SHIFT;
306 	return info->current_limits[data];
307 }
308 
309 static const struct regulator_ops pv88080_buck_ops = {
310 	.get_mode = pv88080_buck_get_mode,
311 	.set_mode = pv88080_buck_set_mode,
312 	.enable = regulator_enable_regmap,
313 	.disable = regulator_disable_regmap,
314 	.is_enabled = regulator_is_enabled_regmap,
315 	.set_voltage_sel = regulator_set_voltage_sel_regmap,
316 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
317 	.list_voltage = regulator_list_voltage_linear,
318 	.set_current_limit = pv88080_set_current_limit,
319 	.get_current_limit = pv88080_get_current_limit,
320 };
321 
322 static const struct regulator_ops pv88080_hvbuck_ops = {
323 	.enable = regulator_enable_regmap,
324 	.disable = regulator_disable_regmap,
325 	.is_enabled = regulator_is_enabled_regmap,
326 	.set_voltage_sel = regulator_set_voltage_sel_regmap,
327 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
328 	.list_voltage = regulator_list_voltage_linear,
329 };
330 
331 #define PV88080_BUCK(chip, regl_name, min, step, max, limits_array) \
332 {\
333 	.desc	=	{\
334 		.id = chip##_ID_##regl_name,\
335 		.name = __stringify(chip##_##regl_name),\
336 		.of_match = of_match_ptr(#regl_name),\
337 		.regulators_node = of_match_ptr("regulators"),\
338 		.type = REGULATOR_VOLTAGE,\
339 		.owner = THIS_MODULE,\
340 		.ops = &pv88080_buck_ops,\
341 		.min_uV = min, \
342 		.uV_step = step, \
343 		.n_voltages = ((max) - (min))/(step) + 1, \
344 	},\
345 	.current_limits = limits_array, \
346 	.n_current_limits = ARRAY_SIZE(limits_array), \
347 }
348 
349 #define PV88080_HVBUCK(chip, regl_name, min, step, max) \
350 {\
351 	.desc	=	{\
352 		.id = chip##_ID_##regl_name,\
353 		.name = __stringify(chip##_##regl_name),\
354 		.of_match = of_match_ptr(#regl_name),\
355 		.regulators_node = of_match_ptr("regulators"),\
356 		.type = REGULATOR_VOLTAGE,\
357 		.owner = THIS_MODULE,\
358 		.ops = &pv88080_hvbuck_ops,\
359 		.min_uV = min, \
360 		.uV_step = step, \
361 		.n_voltages = ((max) - (min))/(step) + 1, \
362 	},\
363 }
364 
365 static struct pv88080_regulator pv88080_regulator_info[] = {
366 	PV88080_BUCK(PV88080, BUCK1, 600000, 6250, 1393750,
367 		pv88080_buck1_limits),
368 	PV88080_BUCK(PV88080, BUCK2, 600000, 6250, 1393750,
369 		pv88080_buck23_limits),
370 	PV88080_BUCK(PV88080, BUCK3, 600000, 6250, 1393750,
371 		pv88080_buck23_limits),
372 	PV88080_HVBUCK(PV88080, HVBUCK, 0, 5000, 1275000),
373 };
374 
375 static irqreturn_t pv88080_irq_handler(int irq, void *data)
376 {
377 	struct pv88080 *chip = data;
378 	int i, reg_val, err, ret = IRQ_NONE;
379 
380 	err = regmap_read(chip->regmap, PV88080_REG_EVENT_A, &reg_val);
381 	if (err < 0)
382 		goto error_i2c;
383 
384 	if (reg_val & PV88080_E_VDD_FLT) {
385 		for (i = 0; i < PV88080_MAX_REGULATORS; i++) {
386 			if (chip->rdev[i] != NULL) {
387 				regulator_notifier_call_chain(chip->rdev[i],
388 					REGULATOR_EVENT_UNDER_VOLTAGE,
389 					NULL);
390 			}
391 		}
392 
393 		err = regmap_write(chip->regmap, PV88080_REG_EVENT_A,
394 			PV88080_E_VDD_FLT);
395 		if (err < 0)
396 			goto error_i2c;
397 
398 		ret = IRQ_HANDLED;
399 	}
400 
401 	if (reg_val & PV88080_E_OVER_TEMP) {
402 		for (i = 0; i < PV88080_MAX_REGULATORS; i++) {
403 			if (chip->rdev[i] != NULL) {
404 				regulator_notifier_call_chain(chip->rdev[i],
405 					REGULATOR_EVENT_OVER_TEMP,
406 					NULL);
407 			}
408 		}
409 
410 		err = regmap_write(chip->regmap, PV88080_REG_EVENT_A,
411 			PV88080_E_OVER_TEMP);
412 		if (err < 0)
413 			goto error_i2c;
414 
415 		ret = IRQ_HANDLED;
416 	}
417 
418 	return ret;
419 
420 error_i2c:
421 	dev_err(chip->dev, "I2C error : %d\n", err);
422 	return IRQ_NONE;
423 }
424 
425 /*
426  * I2C driver interface functions
427  */
428 static int pv88080_i2c_probe(struct i2c_client *i2c,
429 		const struct i2c_device_id *id)
430 {
431 	struct regulator_init_data *init_data = dev_get_platdata(&i2c->dev);
432 	struct pv88080 *chip;
433 	const struct pv88080_compatible_regmap *regmap_config;
434 	const struct of_device_id *match;
435 	struct regulator_config config = { };
436 	int i, error, ret;
437 	unsigned int conf2, conf5;
438 
439 	chip = devm_kzalloc(&i2c->dev, sizeof(struct pv88080), GFP_KERNEL);
440 	if (!chip)
441 		return -ENOMEM;
442 
443 	chip->dev = &i2c->dev;
444 	chip->regmap = devm_regmap_init_i2c(i2c, &pv88080_regmap_config);
445 	if (IS_ERR(chip->regmap)) {
446 		error = PTR_ERR(chip->regmap);
447 		dev_err(chip->dev, "Failed to allocate register map: %d\n",
448 			error);
449 		return error;
450 	}
451 
452 	if (i2c->dev.of_node) {
453 		match = of_match_node(pv88080_dt_ids, i2c->dev.of_node);
454 		if (!match) {
455 			dev_err(chip->dev, "Failed to get of_match_node\n");
456 			return -EINVAL;
457 		}
458 		chip->type = (unsigned long)match->data;
459 	} else {
460 		chip->type = id->driver_data;
461 	}
462 
463 	i2c_set_clientdata(i2c, chip);
464 
465 	if (i2c->irq != 0) {
466 		ret = regmap_write(chip->regmap, PV88080_REG_MASK_A, 0xFF);
467 		if (ret < 0) {
468 			dev_err(chip->dev,
469 				"Failed to mask A reg: %d\n", ret);
470 			return ret;
471 		}
472 		ret = regmap_write(chip->regmap, PV88080_REG_MASK_B, 0xFF);
473 		if (ret < 0) {
474 			dev_err(chip->dev,
475 				"Failed to mask B reg: %d\n", ret);
476 			return ret;
477 		}
478 		ret = regmap_write(chip->regmap, PV88080_REG_MASK_C, 0xFF);
479 		if (ret < 0) {
480 			dev_err(chip->dev,
481 				"Failed to mask C reg: %d\n", ret);
482 			return ret;
483 		}
484 
485 		ret = devm_request_threaded_irq(&i2c->dev, i2c->irq, NULL,
486 					pv88080_irq_handler,
487 					IRQF_TRIGGER_LOW|IRQF_ONESHOT,
488 					"pv88080", chip);
489 		if (ret != 0) {
490 			dev_err(chip->dev, "Failed to request IRQ: %d\n",
491 				i2c->irq);
492 			return ret;
493 		}
494 
495 		ret = regmap_update_bits(chip->regmap, PV88080_REG_MASK_A,
496 			PV88080_M_VDD_FLT | PV88080_M_OVER_TEMP, 0);
497 		if (ret < 0) {
498 			dev_err(chip->dev,
499 				"Failed to update mask reg: %d\n", ret);
500 			return ret;
501 		}
502 	} else {
503 		dev_warn(chip->dev, "No IRQ configured\n");
504 	}
505 
506 	switch (chip->type) {
507 	case TYPE_PV88080_AA:
508 		chip->regmap_config = &pv88080_aa_regs;
509 		break;
510 	case TYPE_PV88080_BA:
511 		chip->regmap_config = &pv88080_ba_regs;
512 		break;
513 	}
514 
515 	regmap_config = chip->regmap_config;
516 	config.dev = chip->dev;
517 	config.regmap = chip->regmap;
518 
519 	/* Registeration for BUCK1, 2, 3 */
520 	for (i = 0; i < PV88080_MAX_REGULATORS-1; i++) {
521 		if (init_data)
522 			config.init_data = &init_data[i];
523 
524 		pv88080_regulator_info[i].limit_reg
525 			= regmap_config->buck_regmap[i].buck_limit_reg;
526 		pv88080_regulator_info[i].limit_mask
527 			= regmap_config->buck_regmap[i].buck_limit_mask;
528 		pv88080_regulator_info[i].mode_reg
529 			= regmap_config->buck_regmap[i].buck_mode_reg;
530 		pv88080_regulator_info[i].conf2
531 			= regmap_config->buck_regmap[i].buck_vdac_range_reg;
532 		pv88080_regulator_info[i].conf5
533 			= regmap_config->buck_regmap[i].buck_vrange_gain_reg;
534 		pv88080_regulator_info[i].desc.enable_reg
535 			= regmap_config->buck_regmap[i].buck_enable_reg;
536 		pv88080_regulator_info[i].desc.enable_mask
537 			= regmap_config->buck_regmap[i].buck_enable_mask;
538 		pv88080_regulator_info[i].desc.vsel_reg
539 			= regmap_config->buck_regmap[i].buck_vsel_reg;
540 		pv88080_regulator_info[i].desc.vsel_mask
541 			= regmap_config->buck_regmap[i].buck_vsel_mask;
542 
543 		ret = regmap_read(chip->regmap,
544 				pv88080_regulator_info[i].conf2, &conf2);
545 		if (ret < 0)
546 			return ret;
547 		conf2 = ((conf2 >> PV88080_BUCK_VDAC_RANGE_SHIFT) &
548 			PV88080_BUCK_VDAC_RANGE_MASK);
549 
550 		ret = regmap_read(chip->regmap,
551 				pv88080_regulator_info[i].conf5, &conf5);
552 		if (ret < 0)
553 			return ret;
554 		conf5 = ((conf5 >> PV88080_BUCK_VRANGE_GAIN_SHIFT) &
555 			PV88080_BUCK_VRANGE_GAIN_MASK);
556 
557 		pv88080_regulator_info[i].desc.min_uV =
558 			pv88080_buck_vol[conf2].min_uV * (conf5+1);
559 		pv88080_regulator_info[i].desc.uV_step =
560 			pv88080_buck_vol[conf2].uV_step * (conf5+1);
561 		pv88080_regulator_info[i].desc.n_voltages =
562 			((pv88080_buck_vol[conf2].max_uV * (conf5+1))
563 			- (pv88080_regulator_info[i].desc.min_uV))
564 			/(pv88080_regulator_info[i].desc.uV_step) + 1;
565 
566 		config.driver_data = (void *)&pv88080_regulator_info[i];
567 		chip->rdev[i] = devm_regulator_register(chip->dev,
568 			&pv88080_regulator_info[i].desc, &config);
569 		if (IS_ERR(chip->rdev[i])) {
570 			dev_err(chip->dev,
571 				"Failed to register PV88080 regulator\n");
572 			return PTR_ERR(chip->rdev[i]);
573 		}
574 	}
575 
576 	pv88080_regulator_info[PV88080_ID_HVBUCK].desc.enable_reg
577 		= regmap_config->hvbuck_enable_reg;
578 	pv88080_regulator_info[PV88080_ID_HVBUCK].desc.enable_mask
579 		= regmap_config->hvbuck_enable_mask;
580 	pv88080_regulator_info[PV88080_ID_HVBUCK].desc.vsel_reg
581 		= regmap_config->hvbuck_vsel_reg;
582 	pv88080_regulator_info[PV88080_ID_HVBUCK].desc.vsel_mask
583 		= regmap_config->hvbuck_vsel_mask;
584 
585 	/* Registeration for HVBUCK */
586 	if (init_data)
587 		config.init_data = &init_data[PV88080_ID_HVBUCK];
588 
589 	config.driver_data = (void *)&pv88080_regulator_info[PV88080_ID_HVBUCK];
590 	chip->rdev[PV88080_ID_HVBUCK] = devm_regulator_register(chip->dev,
591 		&pv88080_regulator_info[PV88080_ID_HVBUCK].desc, &config);
592 	if (IS_ERR(chip->rdev[PV88080_ID_HVBUCK])) {
593 		dev_err(chip->dev, "Failed to register PV88080 regulator\n");
594 		return PTR_ERR(chip->rdev[PV88080_ID_HVBUCK]);
595 	}
596 
597 	return 0;
598 }
599 
600 static const struct i2c_device_id pv88080_i2c_id[] = {
601 	{ "pv88080",    TYPE_PV88080_AA },
602 	{ "pv88080-aa", TYPE_PV88080_AA },
603 	{ "pv88080-ba", TYPE_PV88080_BA },
604 	{},
605 };
606 MODULE_DEVICE_TABLE(i2c, pv88080_i2c_id);
607 
608 static struct i2c_driver pv88080_regulator_driver = {
609 	.driver = {
610 		.name = "pv88080",
611 		.of_match_table = of_match_ptr(pv88080_dt_ids),
612 	},
613 	.probe = pv88080_i2c_probe,
614 	.id_table = pv88080_i2c_id,
615 };
616 
617 module_i2c_driver(pv88080_regulator_driver);
618 
619 MODULE_AUTHOR("James Ban <James.Ban.opensource@diasemi.com>");
620 MODULE_DESCRIPTION("Regulator device driver for Powerventure PV88080");
621 MODULE_LICENSE("GPL");
622