1 // SPDX-License-Identifier: GPL-2.0+
2 //
3 // pv88080-regulator.c - Regulator device driver for PV88080
4 // Copyright (C) 2016  Powerventure Semiconductor Ltd.
5 
6 #include <linux/err.h>
7 #include <linux/i2c.h>
8 #include <linux/module.h>
9 #include <linux/of.h>
10 #include <linux/init.h>
11 #include <linux/slab.h>
12 #include <linux/regulator/driver.h>
13 #include <linux/regulator/machine.h>
14 #include <linux/regmap.h>
15 #include <linux/irq.h>
16 #include <linux/interrupt.h>
17 #include <linux/regulator/of_regulator.h>
18 #include "pv88080-regulator.h"
19 
20 #define PV88080_MAX_REGULATORS	4
21 
22 /* PV88080 REGULATOR IDs */
23 enum {
24 	/* BUCKs */
25 	PV88080_ID_BUCK1,
26 	PV88080_ID_BUCK2,
27 	PV88080_ID_BUCK3,
28 	PV88080_ID_HVBUCK,
29 };
30 
31 enum pv88080_types {
32 	TYPE_PV88080_AA,
33 	TYPE_PV88080_BA,
34 };
35 
36 struct pv88080_regulator {
37 	struct regulator_desc desc;
38 	unsigned int mode_reg;
39 	unsigned int conf2;
40 	unsigned int conf5;
41 };
42 
43 struct pv88080 {
44 	struct device *dev;
45 	struct regmap *regmap;
46 	struct regulator_dev *rdev[PV88080_MAX_REGULATORS];
47 	unsigned long type;
48 	const struct pv88080_compatible_regmap *regmap_config;
49 };
50 
51 struct pv88080_buck_voltage {
52 	int min_uV;
53 	int max_uV;
54 	int uV_step;
55 };
56 
57 struct pv88080_buck_regmap {
58 	/* REGS */
59 	int buck_enable_reg;
60 	int buck_vsel_reg;
61 	int buck_mode_reg;
62 	int buck_limit_reg;
63 	int buck_vdac_range_reg;
64 	int buck_vrange_gain_reg;
65 	/* MASKS */
66 	int buck_enable_mask;
67 	int buck_vsel_mask;
68 	int buck_limit_mask;
69 };
70 
71 struct pv88080_compatible_regmap {
72 	/* BUCK1, 2, 3 */
73 	struct pv88080_buck_regmap buck_regmap[PV88080_MAX_REGULATORS-1];
74 	/* HVBUCK */
75 	int hvbuck_enable_reg;
76 	int hvbuck_vsel_reg;
77 	int hvbuck_enable_mask;
78 	int hvbuck_vsel_mask;
79 };
80 
81 static const struct regmap_config pv88080_regmap_config = {
82 	.reg_bits = 8,
83 	.val_bits = 8,
84 };
85 
86 /* Current limits array (in uA) for BUCK1, BUCK2, BUCK3.
87  * Entry indexes corresponds to register values.
88  */
89 
90 static const unsigned int pv88080_buck1_limits[] = {
91 	3230000, 5130000, 6960000, 8790000
92 };
93 
94 static const unsigned int pv88080_buck23_limits[] = {
95 	1496000, 2393000, 3291000, 4189000
96 };
97 
98 static const struct pv88080_buck_voltage pv88080_buck_vol[2] = {
99 	{
100 		.min_uV = 600000,
101 		.max_uV = 1393750,
102 		.uV_step = 6250,
103 	},
104 	{
105 		.min_uV = 1400000,
106 		.max_uV = 2193750,
107 		.uV_step = 6250,
108 	},
109 };
110 
111 static const struct pv88080_compatible_regmap pv88080_aa_regs = {
112 	/* BUCK1 */
113 	.buck_regmap[0] = {
114 		.buck_enable_reg      = PV88080AA_REG_BUCK1_CONF0,
115 		.buck_vsel_reg        = PV88080AA_REG_BUCK1_CONF0,
116 		.buck_mode_reg        = PV88080AA_REG_BUCK1_CONF1,
117 		.buck_limit_reg       = PV88080AA_REG_BUCK1_CONF1,
118 		.buck_vdac_range_reg  = PV88080AA_REG_BUCK1_CONF2,
119 		.buck_vrange_gain_reg = PV88080AA_REG_BUCK1_CONF5,
120 		.buck_enable_mask     = PV88080_BUCK1_EN,
121 		.buck_vsel_mask       = PV88080_VBUCK1_MASK,
122 		.buck_limit_mask      = PV88080_BUCK1_ILIM_MASK,
123 	},
124 	/* BUCK2 */
125 	.buck_regmap[1] = {
126 		.buck_enable_reg      = PV88080AA_REG_BUCK2_CONF0,
127 		.buck_vsel_reg        = PV88080AA_REG_BUCK2_CONF0,
128 		.buck_mode_reg        = PV88080AA_REG_BUCK2_CONF1,
129 		.buck_limit_reg	      = PV88080AA_REG_BUCK2_CONF1,
130 		.buck_vdac_range_reg  = PV88080AA_REG_BUCK2_CONF2,
131 		.buck_vrange_gain_reg = PV88080AA_REG_BUCK2_CONF5,
132 		.buck_enable_mask	  = PV88080_BUCK2_EN,
133 		.buck_vsel_mask       = PV88080_VBUCK2_MASK,
134 		.buck_limit_mask      = PV88080_BUCK2_ILIM_MASK,
135 	},
136 	/* BUCK3 */
137 	.buck_regmap[2] = {
138 		.buck_enable_reg	  = PV88080AA_REG_BUCK3_CONF0,
139 		.buck_vsel_reg        = PV88080AA_REG_BUCK3_CONF0,
140 		.buck_mode_reg        = PV88080AA_REG_BUCK3_CONF1,
141 		.buck_limit_reg	      = PV88080AA_REG_BUCK3_CONF1,
142 		.buck_vdac_range_reg  = PV88080AA_REG_BUCK3_CONF2,
143 		.buck_vrange_gain_reg = PV88080AA_REG_BUCK3_CONF5,
144 		.buck_enable_mask	  = PV88080_BUCK3_EN,
145 		.buck_vsel_mask       = PV88080_VBUCK3_MASK,
146 		.buck_limit_mask      = PV88080_BUCK3_ILIM_MASK,
147 	},
148 	/* HVBUCK */
149 	.hvbuck_enable_reg	      = PV88080AA_REG_HVBUCK_CONF2,
150 	.hvbuck_vsel_reg          = PV88080AA_REG_HVBUCK_CONF1,
151 	.hvbuck_enable_mask       = PV88080_HVBUCK_EN,
152 	.hvbuck_vsel_mask         = PV88080_VHVBUCK_MASK,
153 };
154 
155 static const struct pv88080_compatible_regmap pv88080_ba_regs = {
156 	/* BUCK1 */
157 	.buck_regmap[0] = {
158 		.buck_enable_reg	  = PV88080BA_REG_BUCK1_CONF0,
159 		.buck_vsel_reg        = PV88080BA_REG_BUCK1_CONF0,
160 		.buck_mode_reg        = PV88080BA_REG_BUCK1_CONF1,
161 		.buck_limit_reg       = PV88080BA_REG_BUCK1_CONF1,
162 		.buck_vdac_range_reg  = PV88080BA_REG_BUCK1_CONF2,
163 		.buck_vrange_gain_reg = PV88080BA_REG_BUCK1_CONF5,
164 		.buck_enable_mask     = PV88080_BUCK1_EN,
165 		.buck_vsel_mask       = PV88080_VBUCK1_MASK,
166 		.buck_limit_mask	  = PV88080_BUCK1_ILIM_MASK,
167 	},
168 	/* BUCK2 */
169 	.buck_regmap[1] = {
170 		.buck_enable_reg	  = PV88080BA_REG_BUCK2_CONF0,
171 		.buck_vsel_reg        = PV88080BA_REG_BUCK2_CONF0,
172 		.buck_mode_reg        = PV88080BA_REG_BUCK2_CONF1,
173 		.buck_limit_reg	      = PV88080BA_REG_BUCK2_CONF1,
174 		.buck_vdac_range_reg  = PV88080BA_REG_BUCK2_CONF2,
175 		.buck_vrange_gain_reg = PV88080BA_REG_BUCK2_CONF5,
176 		.buck_enable_mask	  = PV88080_BUCK2_EN,
177 		.buck_vsel_mask       = PV88080_VBUCK2_MASK,
178 		.buck_limit_mask	  = PV88080_BUCK2_ILIM_MASK,
179 	},
180 	/* BUCK3 */
181 	.buck_regmap[2] = {
182 		.buck_enable_reg	  = PV88080BA_REG_BUCK3_CONF0,
183 		.buck_vsel_reg        = PV88080BA_REG_BUCK3_CONF0,
184 		.buck_mode_reg        = PV88080BA_REG_BUCK3_CONF1,
185 		.buck_limit_reg	      = PV88080BA_REG_BUCK3_CONF1,
186 		.buck_vdac_range_reg  = PV88080BA_REG_BUCK3_CONF2,
187 		.buck_vrange_gain_reg = PV88080BA_REG_BUCK3_CONF5,
188 		.buck_enable_mask	  = PV88080_BUCK3_EN,
189 		.buck_vsel_mask       = PV88080_VBUCK3_MASK,
190 		.buck_limit_mask	  = PV88080_BUCK3_ILIM_MASK,
191 	},
192 	/* HVBUCK */
193 	.hvbuck_enable_reg	      = PV88080BA_REG_HVBUCK_CONF2,
194 	.hvbuck_vsel_reg          = PV88080BA_REG_HVBUCK_CONF1,
195 	.hvbuck_enable_mask       = PV88080_HVBUCK_EN,
196 	.hvbuck_vsel_mask		  = PV88080_VHVBUCK_MASK,
197 };
198 
199 #ifdef CONFIG_OF
200 static const struct of_device_id pv88080_dt_ids[] = {
201 	{ .compatible = "pvs,pv88080",    .data = (void *)TYPE_PV88080_AA },
202 	{ .compatible = "pvs,pv88080-aa", .data = (void *)TYPE_PV88080_AA },
203 	{ .compatible = "pvs,pv88080-ba", .data = (void *)TYPE_PV88080_BA },
204 	{},
205 };
206 MODULE_DEVICE_TABLE(of, pv88080_dt_ids);
207 #endif
208 
209 static unsigned int pv88080_buck_get_mode(struct regulator_dev *rdev)
210 {
211 	struct pv88080_regulator *info = rdev_get_drvdata(rdev);
212 	unsigned int data;
213 	int ret, mode = 0;
214 
215 	ret = regmap_read(rdev->regmap, info->mode_reg, &data);
216 	if (ret < 0)
217 		return ret;
218 
219 	switch (data & PV88080_BUCK1_MODE_MASK) {
220 	case PV88080_BUCK_MODE_SYNC:
221 		mode = REGULATOR_MODE_FAST;
222 		break;
223 	case PV88080_BUCK_MODE_AUTO:
224 		mode = REGULATOR_MODE_NORMAL;
225 		break;
226 	case PV88080_BUCK_MODE_SLEEP:
227 		mode = REGULATOR_MODE_STANDBY;
228 		break;
229 	default:
230 		return -EINVAL;
231 	}
232 
233 	return mode;
234 }
235 
236 static int pv88080_buck_set_mode(struct regulator_dev *rdev,
237 					unsigned int mode)
238 {
239 	struct pv88080_regulator *info = rdev_get_drvdata(rdev);
240 	int val = 0;
241 
242 	switch (mode) {
243 	case REGULATOR_MODE_FAST:
244 		val = PV88080_BUCK_MODE_SYNC;
245 		break;
246 	case REGULATOR_MODE_NORMAL:
247 		val = PV88080_BUCK_MODE_AUTO;
248 		break;
249 	case REGULATOR_MODE_STANDBY:
250 		val = PV88080_BUCK_MODE_SLEEP;
251 		break;
252 	default:
253 		return -EINVAL;
254 	}
255 
256 	return regmap_update_bits(rdev->regmap, info->mode_reg,
257 					PV88080_BUCK1_MODE_MASK, val);
258 }
259 
260 static const struct regulator_ops pv88080_buck_ops = {
261 	.get_mode = pv88080_buck_get_mode,
262 	.set_mode = pv88080_buck_set_mode,
263 	.enable = regulator_enable_regmap,
264 	.disable = regulator_disable_regmap,
265 	.is_enabled = regulator_is_enabled_regmap,
266 	.set_voltage_sel = regulator_set_voltage_sel_regmap,
267 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
268 	.list_voltage = regulator_list_voltage_linear,
269 	.set_current_limit = regulator_set_current_limit_regmap,
270 	.get_current_limit = regulator_get_current_limit_regmap,
271 };
272 
273 static const struct regulator_ops pv88080_hvbuck_ops = {
274 	.enable = regulator_enable_regmap,
275 	.disable = regulator_disable_regmap,
276 	.is_enabled = regulator_is_enabled_regmap,
277 	.set_voltage_sel = regulator_set_voltage_sel_regmap,
278 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
279 	.list_voltage = regulator_list_voltage_linear,
280 };
281 
282 #define PV88080_BUCK(chip, regl_name, min, step, max, limits_array) \
283 {\
284 	.desc	=	{\
285 		.id = chip##_ID_##regl_name,\
286 		.name = __stringify(chip##_##regl_name),\
287 		.of_match = of_match_ptr(#regl_name),\
288 		.regulators_node = of_match_ptr("regulators"),\
289 		.type = REGULATOR_VOLTAGE,\
290 		.owner = THIS_MODULE,\
291 		.ops = &pv88080_buck_ops,\
292 		.min_uV = min, \
293 		.uV_step = step, \
294 		.n_voltages = ((max) - (min))/(step) + 1, \
295 		.curr_table = limits_array, \
296 		.n_current_limits = ARRAY_SIZE(limits_array), \
297 	},\
298 }
299 
300 #define PV88080_HVBUCK(chip, regl_name, min, step, max) \
301 {\
302 	.desc	=	{\
303 		.id = chip##_ID_##regl_name,\
304 		.name = __stringify(chip##_##regl_name),\
305 		.of_match = of_match_ptr(#regl_name),\
306 		.regulators_node = of_match_ptr("regulators"),\
307 		.type = REGULATOR_VOLTAGE,\
308 		.owner = THIS_MODULE,\
309 		.ops = &pv88080_hvbuck_ops,\
310 		.min_uV = min, \
311 		.uV_step = step, \
312 		.n_voltages = ((max) - (min))/(step) + 1, \
313 	},\
314 }
315 
316 static struct pv88080_regulator pv88080_regulator_info[] = {
317 	PV88080_BUCK(PV88080, BUCK1, 600000, 6250, 1393750,
318 		pv88080_buck1_limits),
319 	PV88080_BUCK(PV88080, BUCK2, 600000, 6250, 1393750,
320 		pv88080_buck23_limits),
321 	PV88080_BUCK(PV88080, BUCK3, 600000, 6250, 1393750,
322 		pv88080_buck23_limits),
323 	PV88080_HVBUCK(PV88080, HVBUCK, 0, 5000, 1275000),
324 };
325 
326 static irqreturn_t pv88080_irq_handler(int irq, void *data)
327 {
328 	struct pv88080 *chip = data;
329 	int i, reg_val, err, ret = IRQ_NONE;
330 
331 	err = regmap_read(chip->regmap, PV88080_REG_EVENT_A, &reg_val);
332 	if (err < 0)
333 		goto error_i2c;
334 
335 	if (reg_val & PV88080_E_VDD_FLT) {
336 		for (i = 0; i < PV88080_MAX_REGULATORS; i++) {
337 			if (chip->rdev[i] != NULL)
338 				regulator_notifier_call_chain(chip->rdev[i],
339 					REGULATOR_EVENT_UNDER_VOLTAGE,
340 					NULL);
341 		}
342 
343 		err = regmap_write(chip->regmap, PV88080_REG_EVENT_A,
344 			PV88080_E_VDD_FLT);
345 		if (err < 0)
346 			goto error_i2c;
347 
348 		ret = IRQ_HANDLED;
349 	}
350 
351 	if (reg_val & PV88080_E_OVER_TEMP) {
352 		for (i = 0; i < PV88080_MAX_REGULATORS; i++) {
353 			if (chip->rdev[i] != NULL)
354 				regulator_notifier_call_chain(chip->rdev[i],
355 					REGULATOR_EVENT_OVER_TEMP,
356 					NULL);
357 		}
358 
359 		err = regmap_write(chip->regmap, PV88080_REG_EVENT_A,
360 			PV88080_E_OVER_TEMP);
361 		if (err < 0)
362 			goto error_i2c;
363 
364 		ret = IRQ_HANDLED;
365 	}
366 
367 	return ret;
368 
369 error_i2c:
370 	dev_err(chip->dev, "I2C error : %d\n", err);
371 	return IRQ_NONE;
372 }
373 
374 /*
375  * I2C driver interface functions
376  */
377 static int pv88080_i2c_probe(struct i2c_client *i2c)
378 {
379 	const struct i2c_device_id *id = i2c_client_get_device_id(i2c);
380 	struct regulator_init_data *init_data = dev_get_platdata(&i2c->dev);
381 	struct pv88080 *chip;
382 	const struct pv88080_compatible_regmap *regmap_config;
383 	const struct of_device_id *match;
384 	struct regulator_config config = { };
385 	int i, error, ret;
386 	unsigned int conf2, conf5;
387 
388 	chip = devm_kzalloc(&i2c->dev, sizeof(struct pv88080), GFP_KERNEL);
389 	if (!chip)
390 		return -ENOMEM;
391 
392 	chip->dev = &i2c->dev;
393 	chip->regmap = devm_regmap_init_i2c(i2c, &pv88080_regmap_config);
394 	if (IS_ERR(chip->regmap)) {
395 		error = PTR_ERR(chip->regmap);
396 		dev_err(chip->dev, "Failed to allocate register map: %d\n",
397 			error);
398 		return error;
399 	}
400 
401 	if (i2c->dev.of_node) {
402 		match = of_match_node(pv88080_dt_ids, i2c->dev.of_node);
403 		if (!match) {
404 			dev_err(chip->dev, "Failed to get of_match_node\n");
405 			return -EINVAL;
406 		}
407 		chip->type = (unsigned long)match->data;
408 	} else {
409 		chip->type = id->driver_data;
410 	}
411 
412 	i2c_set_clientdata(i2c, chip);
413 
414 	if (i2c->irq != 0) {
415 		ret = regmap_write(chip->regmap, PV88080_REG_MASK_A, 0xFF);
416 		if (ret < 0) {
417 			dev_err(chip->dev,
418 				"Failed to mask A reg: %d\n", ret);
419 			return ret;
420 		}
421 		ret = regmap_write(chip->regmap, PV88080_REG_MASK_B, 0xFF);
422 		if (ret < 0) {
423 			dev_err(chip->dev,
424 				"Failed to mask B reg: %d\n", ret);
425 			return ret;
426 		}
427 		ret = regmap_write(chip->regmap, PV88080_REG_MASK_C, 0xFF);
428 		if (ret < 0) {
429 			dev_err(chip->dev,
430 				"Failed to mask C reg: %d\n", ret);
431 			return ret;
432 		}
433 
434 		ret = devm_request_threaded_irq(&i2c->dev, i2c->irq, NULL,
435 					pv88080_irq_handler,
436 					IRQF_TRIGGER_LOW|IRQF_ONESHOT,
437 					"pv88080", chip);
438 		if (ret != 0) {
439 			dev_err(chip->dev, "Failed to request IRQ: %d\n",
440 				i2c->irq);
441 			return ret;
442 		}
443 
444 		ret = regmap_update_bits(chip->regmap, PV88080_REG_MASK_A,
445 			PV88080_M_VDD_FLT | PV88080_M_OVER_TEMP, 0);
446 		if (ret < 0) {
447 			dev_err(chip->dev,
448 				"Failed to update mask reg: %d\n", ret);
449 			return ret;
450 		}
451 	} else {
452 		dev_warn(chip->dev, "No IRQ configured\n");
453 	}
454 
455 	switch (chip->type) {
456 	case TYPE_PV88080_AA:
457 		chip->regmap_config = &pv88080_aa_regs;
458 		break;
459 	case TYPE_PV88080_BA:
460 		chip->regmap_config = &pv88080_ba_regs;
461 		break;
462 	}
463 
464 	regmap_config = chip->regmap_config;
465 	config.dev = chip->dev;
466 	config.regmap = chip->regmap;
467 
468 	/* Registeration for BUCK1, 2, 3 */
469 	for (i = 0; i < PV88080_MAX_REGULATORS-1; i++) {
470 		if (init_data)
471 			config.init_data = &init_data[i];
472 
473 		pv88080_regulator_info[i].desc.csel_reg
474 			= regmap_config->buck_regmap[i].buck_limit_reg;
475 		pv88080_regulator_info[i].desc.csel_mask
476 			= regmap_config->buck_regmap[i].buck_limit_mask;
477 		pv88080_regulator_info[i].mode_reg
478 			= regmap_config->buck_regmap[i].buck_mode_reg;
479 		pv88080_regulator_info[i].conf2
480 			= regmap_config->buck_regmap[i].buck_vdac_range_reg;
481 		pv88080_regulator_info[i].conf5
482 			= regmap_config->buck_regmap[i].buck_vrange_gain_reg;
483 		pv88080_regulator_info[i].desc.enable_reg
484 			= regmap_config->buck_regmap[i].buck_enable_reg;
485 		pv88080_regulator_info[i].desc.enable_mask
486 			= regmap_config->buck_regmap[i].buck_enable_mask;
487 		pv88080_regulator_info[i].desc.vsel_reg
488 			= regmap_config->buck_regmap[i].buck_vsel_reg;
489 		pv88080_regulator_info[i].desc.vsel_mask
490 			= regmap_config->buck_regmap[i].buck_vsel_mask;
491 
492 		ret = regmap_read(chip->regmap,
493 				pv88080_regulator_info[i].conf2, &conf2);
494 		if (ret < 0)
495 			return ret;
496 		conf2 = ((conf2 >> PV88080_BUCK_VDAC_RANGE_SHIFT) &
497 			PV88080_BUCK_VDAC_RANGE_MASK);
498 
499 		ret = regmap_read(chip->regmap,
500 				pv88080_regulator_info[i].conf5, &conf5);
501 		if (ret < 0)
502 			return ret;
503 		conf5 = ((conf5 >> PV88080_BUCK_VRANGE_GAIN_SHIFT) &
504 			PV88080_BUCK_VRANGE_GAIN_MASK);
505 
506 		pv88080_regulator_info[i].desc.min_uV =
507 			pv88080_buck_vol[conf2].min_uV * (conf5+1);
508 		pv88080_regulator_info[i].desc.uV_step =
509 			pv88080_buck_vol[conf2].uV_step * (conf5+1);
510 		pv88080_regulator_info[i].desc.n_voltages =
511 			((pv88080_buck_vol[conf2].max_uV * (conf5+1))
512 			- (pv88080_regulator_info[i].desc.min_uV))
513 			/(pv88080_regulator_info[i].desc.uV_step) + 1;
514 
515 		config.driver_data = (void *)&pv88080_regulator_info[i];
516 		chip->rdev[i] = devm_regulator_register(chip->dev,
517 			&pv88080_regulator_info[i].desc, &config);
518 		if (IS_ERR(chip->rdev[i])) {
519 			dev_err(chip->dev,
520 				"Failed to register PV88080 regulator\n");
521 			return PTR_ERR(chip->rdev[i]);
522 		}
523 	}
524 
525 	pv88080_regulator_info[PV88080_ID_HVBUCK].desc.enable_reg
526 		= regmap_config->hvbuck_enable_reg;
527 	pv88080_regulator_info[PV88080_ID_HVBUCK].desc.enable_mask
528 		= regmap_config->hvbuck_enable_mask;
529 	pv88080_regulator_info[PV88080_ID_HVBUCK].desc.vsel_reg
530 		= regmap_config->hvbuck_vsel_reg;
531 	pv88080_regulator_info[PV88080_ID_HVBUCK].desc.vsel_mask
532 		= regmap_config->hvbuck_vsel_mask;
533 
534 	/* Registeration for HVBUCK */
535 	if (init_data)
536 		config.init_data = &init_data[PV88080_ID_HVBUCK];
537 
538 	config.driver_data = (void *)&pv88080_regulator_info[PV88080_ID_HVBUCK];
539 	chip->rdev[PV88080_ID_HVBUCK] = devm_regulator_register(chip->dev,
540 		&pv88080_regulator_info[PV88080_ID_HVBUCK].desc, &config);
541 	if (IS_ERR(chip->rdev[PV88080_ID_HVBUCK])) {
542 		dev_err(chip->dev, "Failed to register PV88080 regulator\n");
543 		return PTR_ERR(chip->rdev[PV88080_ID_HVBUCK]);
544 	}
545 
546 	return 0;
547 }
548 
549 static const struct i2c_device_id pv88080_i2c_id[] = {
550 	{ "pv88080",    TYPE_PV88080_AA },
551 	{ "pv88080-aa", TYPE_PV88080_AA },
552 	{ "pv88080-ba", TYPE_PV88080_BA },
553 	{},
554 };
555 MODULE_DEVICE_TABLE(i2c, pv88080_i2c_id);
556 
557 static struct i2c_driver pv88080_regulator_driver = {
558 	.driver = {
559 		.name = "pv88080",
560 		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
561 		.of_match_table = of_match_ptr(pv88080_dt_ids),
562 	},
563 	.probe = pv88080_i2c_probe,
564 	.id_table = pv88080_i2c_id,
565 };
566 
567 module_i2c_driver(pv88080_regulator_driver);
568 
569 MODULE_AUTHOR("James Ban <James.Ban.opensource@diasemi.com>");
570 MODULE_DESCRIPTION("Regulator device driver for Powerventure PV88080");
571 MODULE_LICENSE("GPL");
572