xref: /openbmc/linux/drivers/regulator/fan53555.c (revision 79c7e144) 
1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // FAN53555 Fairchild Digitally Programmable TinyBuck Regulator Driver.
4 //
5 // Supported Part Numbers:
6 // FAN53555UC00X/01X/03X/04X/05X
7 //
8 // Copyright (c) 2012 Marvell Technology Ltd.
9 // Yunfan Zhang <yfzhang@marvell.com>
10 
11 #include <linux/module.h>
12 #include <linux/param.h>
13 #include <linux/err.h>
14 #include <linux/platform_device.h>
15 #include <linux/regulator/driver.h>
16 #include <linux/regulator/machine.h>
17 #include <linux/regulator/of_regulator.h>
18 #include <linux/of_device.h>
19 #include <linux/i2c.h>
20 #include <linux/slab.h>
21 #include <linux/regmap.h>
22 #include <linux/regulator/fan53555.h>
23 
24 /* Voltage setting */
25 #define FAN53555_VSEL0		0x00
26 #define FAN53555_VSEL1		0x01
27 
28 #define TCS4525_VSEL0		0x11
29 #define TCS4525_VSEL1		0x10
30 #define TCS4525_TIME		0x13
31 #define TCS4525_COMMAND		0x14
32 
33 /* Control register */
34 #define FAN53555_CONTROL	0x02
35 /* IC Type */
36 #define FAN53555_ID1		0x03
37 /* IC mask version */
38 #define FAN53555_ID2		0x04
39 /* Monitor register */
40 #define FAN53555_MONITOR	0x05
41 
42 /* VSEL bit definitions */
43 #define VSEL_BUCK_EN	(1 << 7)
44 #define VSEL_MODE		(1 << 6)
45 /* Chip ID and Verison */
46 #define DIE_ID		0x0F	/* ID1 */
47 #define DIE_REV		0x0F	/* ID2 */
48 /* Control bit definitions */
49 #define CTL_OUTPUT_DISCHG	(1 << 7)
50 #define CTL_SLEW_MASK		(0x7 << 4)
51 #define CTL_SLEW_SHIFT		4
52 #define CTL_RESET			(1 << 2)
53 #define CTL_MODE_VSEL0_MODE	BIT(0)
54 #define CTL_MODE_VSEL1_MODE	BIT(1)
55 
56 #define FAN53555_NVOLTAGES	64	/* Numbers of voltages */
57 #define FAN53526_NVOLTAGES	128
58 
59 #define TCS_VSEL0_MODE		(1 << 7)
60 #define TCS_VSEL1_MODE		(1 << 6)
61 
62 #define TCS_SLEW_SHIFT		3
63 #define TCS_SLEW_MASK		(0x3 < 3)
64 
65 enum fan53555_vendor {
66 	FAN53526_VENDOR_FAIRCHILD = 0,
67 	FAN53555_VENDOR_FAIRCHILD,
68 	FAN53555_VENDOR_SILERGY,
69 	FAN53526_VENDOR_TCS,
70 };
71 
72 enum {
73 	FAN53526_CHIP_ID_01 = 1,
74 };
75 
76 enum {
77 	FAN53526_CHIP_REV_08 = 8,
78 };
79 
80 /* IC Type */
81 enum {
82 	FAN53555_CHIP_ID_00 = 0,
83 	FAN53555_CHIP_ID_01,
84 	FAN53555_CHIP_ID_02,
85 	FAN53555_CHIP_ID_03,
86 	FAN53555_CHIP_ID_04,
87 	FAN53555_CHIP_ID_05,
88 	FAN53555_CHIP_ID_08 = 8,
89 };
90 
91 enum {
92 	TCS4525_CHIP_ID_12 = 12,
93 };
94 
95 /* IC mask revision */
96 enum {
97 	FAN53555_CHIP_REV_00 = 0x3,
98 	FAN53555_CHIP_REV_13 = 0xf,
99 };
100 
101 enum {
102 	SILERGY_SYR82X = 8,
103 	SILERGY_SYR83X = 9,
104 };
105 
106 struct fan53555_device_info {
107 	enum fan53555_vendor vendor;
108 	struct device *dev;
109 	struct regulator_desc desc;
110 	struct regulator_init_data *regulator;
111 	/* IC Type and Rev */
112 	int chip_id;
113 	int chip_rev;
114 	/* Voltage setting register */
115 	unsigned int vol_reg;
116 	unsigned int sleep_reg;
117 	/* Voltage range and step(linear) */
118 	unsigned int vsel_min;
119 	unsigned int vsel_step;
120 	unsigned int vsel_count;
121 	/* Mode */
122 	unsigned int mode_reg;
123 	unsigned int mode_mask;
124 	/* Sleep voltage cache */
125 	unsigned int sleep_vol_cache;
126 	/* Slew rate */
127 	unsigned int slew_reg;
128 	unsigned int slew_mask;
129 	unsigned int slew_shift;
130 	unsigned int slew_rate;
131 };
132 
133 static int fan53555_set_suspend_voltage(struct regulator_dev *rdev, int uV)
134 {
135 	struct fan53555_device_info *di = rdev_get_drvdata(rdev);
136 	int ret;
137 
138 	if (di->sleep_vol_cache == uV)
139 		return 0;
140 	ret = regulator_map_voltage_linear(rdev, uV, uV);
141 	if (ret < 0)
142 		return ret;
143 	ret = regmap_update_bits(rdev->regmap, di->sleep_reg,
144 				 di->desc.vsel_mask, ret);
145 	if (ret < 0)
146 		return ret;
147 	/* Cache the sleep voltage setting.
148 	 * Might not be the real voltage which is rounded */
149 	di->sleep_vol_cache = uV;
150 
151 	return 0;
152 }
153 
154 static int fan53555_set_suspend_enable(struct regulator_dev *rdev)
155 {
156 	struct fan53555_device_info *di = rdev_get_drvdata(rdev);
157 
158 	return regmap_update_bits(rdev->regmap, di->sleep_reg,
159 				  VSEL_BUCK_EN, VSEL_BUCK_EN);
160 }
161 
162 static int fan53555_set_suspend_disable(struct regulator_dev *rdev)
163 {
164 	struct fan53555_device_info *di = rdev_get_drvdata(rdev);
165 
166 	return regmap_update_bits(rdev->regmap, di->sleep_reg,
167 				  VSEL_BUCK_EN, 0);
168 }
169 
170 static int fan53555_set_mode(struct regulator_dev *rdev, unsigned int mode)
171 {
172 	struct fan53555_device_info *di = rdev_get_drvdata(rdev);
173 
174 	switch (mode) {
175 	case REGULATOR_MODE_FAST:
176 		regmap_update_bits(rdev->regmap, di->mode_reg,
177 				   di->mode_mask, di->mode_mask);
178 		break;
179 	case REGULATOR_MODE_NORMAL:
180 		regmap_update_bits(rdev->regmap, di->vol_reg, di->mode_mask, 0);
181 		break;
182 	default:
183 		return -EINVAL;
184 	}
185 	return 0;
186 }
187 
188 static unsigned int fan53555_get_mode(struct regulator_dev *rdev)
189 {
190 	struct fan53555_device_info *di = rdev_get_drvdata(rdev);
191 	unsigned int val;
192 	int ret = 0;
193 
194 	ret = regmap_read(rdev->regmap, di->mode_reg, &val);
195 	if (ret < 0)
196 		return ret;
197 	if (val & di->mode_mask)
198 		return REGULATOR_MODE_FAST;
199 	else
200 		return REGULATOR_MODE_NORMAL;
201 }
202 
203 static const int slew_rates[] = {
204 	64000,
205 	32000,
206 	16000,
207 	 8000,
208 	 4000,
209 	 2000,
210 	 1000,
211 	  500,
212 };
213 
214 static const int tcs_slew_rates[] = {
215 	18700,
216 	 9300,
217 	 4600,
218 	 2300,
219 };
220 
221 static int fan53555_set_ramp(struct regulator_dev *rdev, int ramp)
222 {
223 	struct fan53555_device_info *di = rdev_get_drvdata(rdev);
224 	int regval = -1, i;
225 	const int *slew_rate_t;
226 	int slew_rate_n;
227 
228 	switch (di->vendor) {
229 	case FAN53526_VENDOR_FAIRCHILD:
230 	case FAN53555_VENDOR_FAIRCHILD:
231 	case FAN53555_VENDOR_SILERGY:
232 		slew_rate_t = slew_rates;
233 		slew_rate_n = ARRAY_SIZE(slew_rates);
234 		break;
235 	case FAN53526_VENDOR_TCS:
236 		slew_rate_t = tcs_slew_rates;
237 		slew_rate_n = ARRAY_SIZE(tcs_slew_rates);
238 		break;
239 	default:
240 		return -EINVAL;
241 	}
242 
243 	for (i = 0; i < slew_rate_n; i++) {
244 		if (ramp <= slew_rate_t[i])
245 			regval = i;
246 		else
247 			break;
248 	}
249 
250 	if (regval < 0) {
251 		dev_err(di->dev, "unsupported ramp value %d\n", ramp);
252 		return -EINVAL;
253 	}
254 
255 	return regmap_update_bits(rdev->regmap, di->slew_reg,
256 				  di->slew_mask, regval << di->slew_shift);
257 }
258 
259 static const struct regulator_ops fan53555_regulator_ops = {
260 	.set_voltage_sel = regulator_set_voltage_sel_regmap,
261 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
262 	.set_voltage_time_sel = regulator_set_voltage_time_sel,
263 	.map_voltage = regulator_map_voltage_linear,
264 	.list_voltage = regulator_list_voltage_linear,
265 	.set_suspend_voltage = fan53555_set_suspend_voltage,
266 	.enable = regulator_enable_regmap,
267 	.disable = regulator_disable_regmap,
268 	.is_enabled = regulator_is_enabled_regmap,
269 	.set_mode = fan53555_set_mode,
270 	.get_mode = fan53555_get_mode,
271 	.set_ramp_delay = fan53555_set_ramp,
272 	.set_suspend_enable = fan53555_set_suspend_enable,
273 	.set_suspend_disable = fan53555_set_suspend_disable,
274 };
275 
276 static int fan53526_voltages_setup_fairchild(struct fan53555_device_info *di)
277 {
278 	/* Init voltage range and step */
279 	switch (di->chip_id) {
280 	case FAN53526_CHIP_ID_01:
281 		switch (di->chip_rev) {
282 		case FAN53526_CHIP_REV_08:
283 			di->vsel_min = 600000;
284 			di->vsel_step = 6250;
285 			break;
286 		default:
287 			dev_err(di->dev,
288 				"Chip ID %d with rev %d not supported!\n",
289 				di->chip_id, di->chip_rev);
290 			return -EINVAL;
291 		}
292 		break;
293 	default:
294 		dev_err(di->dev,
295 			"Chip ID %d not supported!\n", di->chip_id);
296 		return -EINVAL;
297 	}
298 
299 	di->vsel_count = FAN53526_NVOLTAGES;
300 
301 	return 0;
302 }
303 
304 static int fan53555_voltages_setup_fairchild(struct fan53555_device_info *di)
305 {
306 	/* Init voltage range and step */
307 	switch (di->chip_id) {
308 	case FAN53555_CHIP_ID_00:
309 		switch (di->chip_rev) {
310 		case FAN53555_CHIP_REV_00:
311 			di->vsel_min = 600000;
312 			di->vsel_step = 10000;
313 			break;
314 		case FAN53555_CHIP_REV_13:
315 			di->vsel_min = 800000;
316 			di->vsel_step = 10000;
317 			break;
318 		default:
319 			dev_err(di->dev,
320 				"Chip ID %d with rev %d not supported!\n",
321 				di->chip_id, di->chip_rev);
322 			return -EINVAL;
323 		}
324 		break;
325 	case FAN53555_CHIP_ID_01:
326 	case FAN53555_CHIP_ID_03:
327 	case FAN53555_CHIP_ID_05:
328 	case FAN53555_CHIP_ID_08:
329 		di->vsel_min = 600000;
330 		di->vsel_step = 10000;
331 		break;
332 	case FAN53555_CHIP_ID_04:
333 		di->vsel_min = 603000;
334 		di->vsel_step = 12826;
335 		break;
336 	default:
337 		dev_err(di->dev,
338 			"Chip ID %d not supported!\n", di->chip_id);
339 		return -EINVAL;
340 	}
341 	di->slew_reg = FAN53555_CONTROL;
342 	di->slew_mask = CTL_SLEW_MASK;
343 	di->slew_shift = CTL_SLEW_SHIFT;
344 	di->vsel_count = FAN53555_NVOLTAGES;
345 
346 	return 0;
347 }
348 
349 static int fan53555_voltages_setup_silergy(struct fan53555_device_info *di)
350 {
351 	/* Init voltage range and step */
352 	switch (di->chip_id) {
353 	case SILERGY_SYR82X:
354 	case SILERGY_SYR83X:
355 		di->vsel_min = 712500;
356 		di->vsel_step = 12500;
357 		break;
358 	default:
359 		dev_err(di->dev,
360 			"Chip ID %d not supported!\n", di->chip_id);
361 		return -EINVAL;
362 	}
363 	di->slew_reg = FAN53555_CONTROL;
364 	di->slew_mask = CTL_SLEW_MASK;
365 	di->slew_shift = CTL_SLEW_SHIFT;
366 	di->vsel_count = FAN53555_NVOLTAGES;
367 
368 	return 0;
369 }
370 
371 static int fan53526_voltages_setup_tcs(struct fan53555_device_info *di)
372 {
373 	switch (di->chip_id) {
374 	case TCS4525_CHIP_ID_12:
375 		di->slew_reg = TCS4525_TIME;
376 		di->slew_mask = TCS_SLEW_MASK;
377 		di->slew_shift = TCS_SLEW_SHIFT;
378 
379 		/* Init voltage range and step */
380 		di->vsel_min = 600000;
381 		di->vsel_step = 6250;
382 		di->vsel_count = FAN53526_NVOLTAGES;
383 		break;
384 	default:
385 		dev_err(di->dev, "Chip ID %d not supported!\n", di->chip_id);
386 		return -EINVAL;
387 	}
388 
389 	return 0;
390 }
391 
392 /* For 00,01,03,05 options:
393  * VOUT = 0.60V + NSELx * 10mV, from 0.60 to 1.23V.
394  * For 04 option:
395  * VOUT = 0.603V + NSELx * 12.826mV, from 0.603 to 1.411V.
396  * */
397 static int fan53555_device_setup(struct fan53555_device_info *di,
398 				struct fan53555_platform_data *pdata)
399 {
400 	int ret = 0;
401 
402 	/* Setup voltage control register */
403 	switch (di->vendor) {
404 	case FAN53526_VENDOR_FAIRCHILD:
405 	case FAN53555_VENDOR_FAIRCHILD:
406 	case FAN53555_VENDOR_SILERGY:
407 		switch (pdata->sleep_vsel_id) {
408 		case FAN53555_VSEL_ID_0:
409 			di->sleep_reg = FAN53555_VSEL0;
410 			di->vol_reg = FAN53555_VSEL1;
411 			break;
412 		case FAN53555_VSEL_ID_1:
413 			di->sleep_reg = FAN53555_VSEL1;
414 			di->vol_reg = FAN53555_VSEL0;
415 			break;
416 		default:
417 			dev_err(di->dev, "Invalid VSEL ID!\n");
418 			return -EINVAL;
419 		}
420 		break;
421 	case FAN53526_VENDOR_TCS:
422 		switch (pdata->sleep_vsel_id) {
423 		case FAN53555_VSEL_ID_0:
424 			di->sleep_reg = TCS4525_VSEL0;
425 			di->vol_reg = TCS4525_VSEL1;
426 			break;
427 		case FAN53555_VSEL_ID_1:
428 			di->sleep_reg = TCS4525_VSEL1;
429 			di->vol_reg = TCS4525_VSEL0;
430 			break;
431 		default:
432 			dev_err(di->dev, "Invalid VSEL ID!\n");
433 			return -EINVAL;
434 		}
435 		break;
436 	default:
437 		dev_err(di->dev, "vendor %d not supported!\n", di->vendor);
438 		return -EINVAL;
439 	}
440 
441 	/* Setup mode control register */
442 	switch (di->vendor) {
443 	case FAN53526_VENDOR_FAIRCHILD:
444 		di->mode_reg = FAN53555_CONTROL;
445 
446 		switch (pdata->sleep_vsel_id) {
447 		case FAN53555_VSEL_ID_0:
448 			di->mode_mask = CTL_MODE_VSEL1_MODE;
449 			break;
450 		case FAN53555_VSEL_ID_1:
451 			di->mode_mask = CTL_MODE_VSEL0_MODE;
452 			break;
453 		}
454 		break;
455 	case FAN53555_VENDOR_FAIRCHILD:
456 	case FAN53555_VENDOR_SILERGY:
457 		di->mode_reg = di->vol_reg;
458 		di->mode_mask = VSEL_MODE;
459 		break;
460 	case FAN53526_VENDOR_TCS:
461 		di->mode_reg = TCS4525_COMMAND;
462 
463 		switch (pdata->sleep_vsel_id) {
464 		case FAN53555_VSEL_ID_0:
465 			di->mode_mask = TCS_VSEL1_MODE;
466 			break;
467 		case FAN53555_VSEL_ID_1:
468 			di->mode_mask = TCS_VSEL0_MODE;
469 			break;
470 		}
471 		break;
472 	default:
473 		dev_err(di->dev, "vendor %d not supported!\n", di->vendor);
474 		return -EINVAL;
475 	}
476 
477 	/* Setup voltage range */
478 	switch (di->vendor) {
479 	case FAN53526_VENDOR_FAIRCHILD:
480 		ret = fan53526_voltages_setup_fairchild(di);
481 		break;
482 	case FAN53555_VENDOR_FAIRCHILD:
483 		ret = fan53555_voltages_setup_fairchild(di);
484 		break;
485 	case FAN53555_VENDOR_SILERGY:
486 		ret = fan53555_voltages_setup_silergy(di);
487 		break;
488 	case FAN53526_VENDOR_TCS:
489 		ret = fan53526_voltages_setup_tcs(di);
490 		break;
491 	default:
492 		dev_err(di->dev, "vendor %d not supported!\n", di->vendor);
493 		return -EINVAL;
494 	}
495 
496 	return ret;
497 }
498 
499 static int fan53555_regulator_register(struct fan53555_device_info *di,
500 			struct regulator_config *config)
501 {
502 	struct regulator_desc *rdesc = &di->desc;
503 	struct regulator_dev *rdev;
504 
505 	rdesc->name = "fan53555-reg";
506 	rdesc->supply_name = "vin";
507 	rdesc->ops = &fan53555_regulator_ops;
508 	rdesc->type = REGULATOR_VOLTAGE;
509 	rdesc->n_voltages = di->vsel_count;
510 	rdesc->enable_reg = di->vol_reg;
511 	rdesc->enable_mask = VSEL_BUCK_EN;
512 	rdesc->min_uV = di->vsel_min;
513 	rdesc->uV_step = di->vsel_step;
514 	rdesc->vsel_reg = di->vol_reg;
515 	rdesc->vsel_mask = di->vsel_count - 1;
516 	rdesc->owner = THIS_MODULE;
517 
518 	rdev = devm_regulator_register(di->dev, &di->desc, config);
519 	return PTR_ERR_OR_ZERO(rdev);
520 }
521 
522 static const struct regmap_config fan53555_regmap_config = {
523 	.reg_bits = 8,
524 	.val_bits = 8,
525 };
526 
527 static struct fan53555_platform_data *fan53555_parse_dt(struct device *dev,
528 					      struct device_node *np,
529 					      const struct regulator_desc *desc)
530 {
531 	struct fan53555_platform_data *pdata;
532 	int ret;
533 	u32 tmp;
534 
535 	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
536 	if (!pdata)
537 		return NULL;
538 
539 	pdata->regulator = of_get_regulator_init_data(dev, np, desc);
540 
541 	ret = of_property_read_u32(np, "fcs,suspend-voltage-selector",
542 				   &tmp);
543 	if (!ret)
544 		pdata->sleep_vsel_id = tmp;
545 
546 	return pdata;
547 }
548 
549 static const struct of_device_id __maybe_unused fan53555_dt_ids[] = {
550 	{
551 		.compatible = "fcs,fan53526",
552 		.data = (void *)FAN53526_VENDOR_FAIRCHILD,
553 	}, {
554 		.compatible = "fcs,fan53555",
555 		.data = (void *)FAN53555_VENDOR_FAIRCHILD
556 	}, {
557 		.compatible = "silergy,syr827",
558 		.data = (void *)FAN53555_VENDOR_SILERGY,
559 	}, {
560 		.compatible = "silergy,syr828",
561 		.data = (void *)FAN53555_VENDOR_SILERGY,
562 	}, {
563 		.compatible = "tcs,tcs4525",
564 		.data = (void *)FAN53526_VENDOR_TCS
565 	},
566 	{ }
567 };
568 MODULE_DEVICE_TABLE(of, fan53555_dt_ids);
569 
570 static int fan53555_regulator_probe(struct i2c_client *client,
571 				const struct i2c_device_id *id)
572 {
573 	struct device_node *np = client->dev.of_node;
574 	struct fan53555_device_info *di;
575 	struct fan53555_platform_data *pdata;
576 	struct regulator_config config = { };
577 	struct regmap *regmap;
578 	unsigned int val;
579 	int ret;
580 
581 	di = devm_kzalloc(&client->dev, sizeof(struct fan53555_device_info),
582 					GFP_KERNEL);
583 	if (!di)
584 		return -ENOMEM;
585 
586 	pdata = dev_get_platdata(&client->dev);
587 	if (!pdata)
588 		pdata = fan53555_parse_dt(&client->dev, np, &di->desc);
589 
590 	if (!pdata || !pdata->regulator) {
591 		dev_err(&client->dev, "Platform data not found!\n");
592 		return -ENODEV;
593 	}
594 
595 	di->regulator = pdata->regulator;
596 	if (client->dev.of_node) {
597 		di->vendor =
598 			(unsigned long)of_device_get_match_data(&client->dev);
599 	} else {
600 		/* if no ramp constraint set, get the pdata ramp_delay */
601 		if (!di->regulator->constraints.ramp_delay) {
602 			if (pdata->slew_rate >= ARRAY_SIZE(slew_rates)) {
603 				dev_err(&client->dev, "Invalid slew_rate\n");
604 				return -EINVAL;
605 			}
606 
607 			di->regulator->constraints.ramp_delay
608 					= slew_rates[pdata->slew_rate];
609 		}
610 
611 		di->vendor = id->driver_data;
612 	}
613 
614 	regmap = devm_regmap_init_i2c(client, &fan53555_regmap_config);
615 	if (IS_ERR(regmap)) {
616 		dev_err(&client->dev, "Failed to allocate regmap!\n");
617 		return PTR_ERR(regmap);
618 	}
619 	di->dev = &client->dev;
620 	i2c_set_clientdata(client, di);
621 	/* Get chip ID */
622 	ret = regmap_read(regmap, FAN53555_ID1, &val);
623 	if (ret < 0) {
624 		dev_err(&client->dev, "Failed to get chip ID!\n");
625 		return ret;
626 	}
627 	di->chip_id = val & DIE_ID;
628 	/* Get chip revision */
629 	ret = regmap_read(regmap, FAN53555_ID2, &val);
630 	if (ret < 0) {
631 		dev_err(&client->dev, "Failed to get chip Rev!\n");
632 		return ret;
633 	}
634 	di->chip_rev = val & DIE_REV;
635 	dev_info(&client->dev, "FAN53555 Option[%d] Rev[%d] Detected!\n",
636 				di->chip_id, di->chip_rev);
637 	/* Device init */
638 	ret = fan53555_device_setup(di, pdata);
639 	if (ret < 0) {
640 		dev_err(&client->dev, "Failed to setup device!\n");
641 		return ret;
642 	}
643 	/* Register regulator */
644 	config.dev = di->dev;
645 	config.init_data = di->regulator;
646 	config.regmap = regmap;
647 	config.driver_data = di;
648 	config.of_node = np;
649 
650 	ret = fan53555_regulator_register(di, &config);
651 	if (ret < 0)
652 		dev_err(&client->dev, "Failed to register regulator!\n");
653 	return ret;
654 
655 }
656 
657 static const struct i2c_device_id fan53555_id[] = {
658 	{
659 		.name = "fan53526",
660 		.driver_data = FAN53526_VENDOR_FAIRCHILD
661 	}, {
662 		.name = "fan53555",
663 		.driver_data = FAN53555_VENDOR_FAIRCHILD
664 	}, {
665 		.name = "syr827",
666 		.driver_data = FAN53555_VENDOR_SILERGY
667 	}, {
668 		.name = "syr828",
669 		.driver_data = FAN53555_VENDOR_SILERGY
670 	}, {
671 		.name = "tcs4525",
672 		.driver_data = FAN53526_VENDOR_TCS
673 	},
674 	{ },
675 };
676 MODULE_DEVICE_TABLE(i2c, fan53555_id);
677 
678 static struct i2c_driver fan53555_regulator_driver = {
679 	.driver = {
680 		.name = "fan53555-regulator",
681 		.of_match_table = of_match_ptr(fan53555_dt_ids),
682 	},
683 	.probe = fan53555_regulator_probe,
684 	.id_table = fan53555_id,
685 };
686 
687 module_i2c_driver(fan53555_regulator_driver);
688 
689 MODULE_AUTHOR("Yunfan Zhang <yfzhang@marvell.com>");
690 MODULE_DESCRIPTION("FAN53555 regulator driver");
691 MODULE_LICENSE("GPL v2");
692