1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // Copyright (c) 2019 MediaTek Inc.
4 
5 #include <linux/mfd/mt6358/registers.h>
6 #include <linux/mfd/mt6397/core.h>
7 #include <linux/module.h>
8 #include <linux/of.h>
9 #include <linux/platform_device.h>
10 #include <linux/regmap.h>
11 #include <linux/regulator/driver.h>
12 #include <linux/regulator/machine.h>
13 #include <linux/regulator/mt6358-regulator.h>
14 #include <linux/regulator/of_regulator.h>
15 
16 #define MT6358_BUCK_MODE_AUTO	0
17 #define MT6358_BUCK_MODE_FORCE_PWM	1
18 
19 /*
20  * MT6358 regulators' information
21  *
22  * @desc: standard fields of regulator description.
23  * @qi: Mask for query enable signal status of regulators
24  */
25 struct mt6358_regulator_info {
26 	struct regulator_desc desc;
27 	u32 status_reg;
28 	u32 qi;
29 	const u32 *index_table;
30 	unsigned int n_table;
31 	u32 da_vsel_reg;
32 	u32 da_vsel_mask;
33 	u32 modeset_reg;
34 	u32 modeset_mask;
35 };
36 
37 #define to_regulator_info(x) container_of((x), struct mt6358_regulator_info, desc)
38 
39 #define MT6358_BUCK(match, vreg, min, max, step,		\
40 	vosel_mask, _da_vsel_reg, _da_vsel_mask,	\
41 	_modeset_reg, _modeset_shift)		\
42 [MT6358_ID_##vreg] = {	\
43 	.desc = {	\
44 		.name = #vreg,	\
45 		.of_match = of_match_ptr(match),	\
46 		.ops = &mt6358_buck_ops,	\
47 		.type = REGULATOR_VOLTAGE,	\
48 		.id = MT6358_ID_##vreg,		\
49 		.owner = THIS_MODULE,		\
50 		.n_voltages = ((max) - (min)) / (step) + 1,	\
51 		.min_uV = (min),		\
52 		.uV_step = (step),		\
53 		.vsel_reg = MT6358_BUCK_##vreg##_ELR0,	\
54 		.vsel_mask = vosel_mask,	\
55 		.enable_reg = MT6358_BUCK_##vreg##_CON0,	\
56 		.enable_mask = BIT(0),	\
57 		.of_map_mode = mt6358_map_mode,	\
58 	},	\
59 	.status_reg = MT6358_BUCK_##vreg##_DBG1,	\
60 	.qi = BIT(0),	\
61 	.da_vsel_reg = _da_vsel_reg,	\
62 	.da_vsel_mask = _da_vsel_mask,	\
63 	.modeset_reg = _modeset_reg,	\
64 	.modeset_mask = BIT(_modeset_shift),	\
65 }
66 
67 #define MT6358_LDO(match, vreg, ldo_volt_table,	\
68 	ldo_index_table, enreg, enbit, vosel,	\
69 	vosel_mask)	\
70 [MT6358_ID_##vreg] = {	\
71 	.desc = {	\
72 		.name = #vreg,	\
73 		.of_match = of_match_ptr(match),	\
74 		.ops = &mt6358_volt_table_ops,	\
75 		.type = REGULATOR_VOLTAGE,	\
76 		.id = MT6358_ID_##vreg,	\
77 		.owner = THIS_MODULE,	\
78 		.n_voltages = ARRAY_SIZE(ldo_volt_table),	\
79 		.volt_table = ldo_volt_table,	\
80 		.vsel_reg = vosel,	\
81 		.vsel_mask = vosel_mask,	\
82 		.enable_reg = enreg,	\
83 		.enable_mask = BIT(enbit),	\
84 	},	\
85 	.status_reg = MT6358_LDO_##vreg##_CON1,	\
86 	.qi = BIT(15),	\
87 	.index_table = ldo_index_table,	\
88 	.n_table = ARRAY_SIZE(ldo_index_table),	\
89 }
90 
91 #define MT6358_LDO1(match, vreg, min, max, step,	\
92 	_da_vsel_reg, _da_vsel_mask,	\
93 	vosel, vosel_mask)	\
94 [MT6358_ID_##vreg] = {	\
95 	.desc = {	\
96 		.name = #vreg,	\
97 		.of_match = of_match_ptr(match),	\
98 		.ops = &mt6358_volt_range_ops,	\
99 		.type = REGULATOR_VOLTAGE,	\
100 		.id = MT6358_ID_##vreg,	\
101 		.owner = THIS_MODULE,	\
102 		.n_voltages = ((max) - (min)) / (step) + 1,	\
103 		.min_uV = (min),		\
104 		.uV_step = (step),		\
105 		.vsel_reg = vosel,	\
106 		.vsel_mask = vosel_mask,	\
107 		.enable_reg = MT6358_LDO_##vreg##_CON0,	\
108 		.enable_mask = BIT(0),	\
109 	},	\
110 	.da_vsel_reg = _da_vsel_reg,	\
111 	.da_vsel_mask = _da_vsel_mask,	\
112 	.status_reg = MT6358_LDO_##vreg##_DBG1,	\
113 	.qi = BIT(0),	\
114 }
115 
116 #define MT6358_REG_FIXED(match, vreg,	\
117 	enreg, enbit, volt)	\
118 [MT6358_ID_##vreg] = {	\
119 	.desc = {	\
120 		.name = #vreg,	\
121 		.of_match = of_match_ptr(match),	\
122 		.ops = &mt6358_volt_fixed_ops,	\
123 		.type = REGULATOR_VOLTAGE,	\
124 		.id = MT6358_ID_##vreg,	\
125 		.owner = THIS_MODULE,	\
126 		.n_voltages = 1,	\
127 		.enable_reg = enreg,	\
128 		.enable_mask = BIT(enbit),	\
129 		.min_uV = volt,	\
130 	},	\
131 	.status_reg = MT6358_LDO_##vreg##_CON1,	\
132 	.qi = BIT(15),							\
133 }
134 
135 #define MT6366_BUCK(match, vreg, min, max, step,		\
136 	vosel_mask, _da_vsel_reg, _da_vsel_mask,	\
137 	_modeset_reg, _modeset_shift)		\
138 [MT6366_ID_##vreg] = {	\
139 	.desc = {	\
140 		.name = #vreg,	\
141 		.of_match = of_match_ptr(match),	\
142 		.ops = &mt6358_buck_ops,	\
143 		.type = REGULATOR_VOLTAGE,	\
144 		.id = MT6366_ID_##vreg,		\
145 		.owner = THIS_MODULE,		\
146 		.n_voltages = ((max) - (min)) / (step) + 1,	\
147 		.min_uV = (min),		\
148 		.uV_step = (step),		\
149 		.vsel_reg = MT6358_BUCK_##vreg##_ELR0,	\
150 		.vsel_mask = vosel_mask,	\
151 		.enable_reg = MT6358_BUCK_##vreg##_CON0,	\
152 		.enable_mask = BIT(0),	\
153 		.of_map_mode = mt6358_map_mode,	\
154 	},	\
155 	.status_reg = MT6358_BUCK_##vreg##_DBG1,	\
156 	.qi = BIT(0),	\
157 	.da_vsel_reg = _da_vsel_reg,	\
158 	.da_vsel_mask = _da_vsel_mask,	\
159 	.modeset_reg = _modeset_reg,	\
160 	.modeset_mask = BIT(_modeset_shift),	\
161 }
162 
163 #define MT6366_LDO(match, vreg, ldo_volt_table,	\
164 	ldo_index_table, enreg, enbit, vosel,	\
165 	vosel_mask)	\
166 [MT6366_ID_##vreg] = {	\
167 	.desc = {	\
168 		.name = #vreg,	\
169 		.of_match = of_match_ptr(match),	\
170 		.ops = &mt6358_volt_table_ops,	\
171 		.type = REGULATOR_VOLTAGE,	\
172 		.id = MT6366_ID_##vreg,	\
173 		.owner = THIS_MODULE,	\
174 		.n_voltages = ARRAY_SIZE(ldo_volt_table),	\
175 		.volt_table = ldo_volt_table,	\
176 		.vsel_reg = vosel,	\
177 		.vsel_mask = vosel_mask,	\
178 		.enable_reg = enreg,	\
179 		.enable_mask = BIT(enbit),	\
180 	},	\
181 	.status_reg = MT6358_LDO_##vreg##_CON1,	\
182 	.qi = BIT(15),	\
183 	.index_table = ldo_index_table,	\
184 	.n_table = ARRAY_SIZE(ldo_index_table),	\
185 }
186 
187 #define MT6366_LDO1(match, vreg, min, max, step,	\
188 	_da_vsel_reg, _da_vsel_mask,	\
189 	vosel, vosel_mask)	\
190 [MT6366_ID_##vreg] = {	\
191 	.desc = {	\
192 		.name = #vreg,	\
193 		.of_match = of_match_ptr(match),	\
194 		.ops = &mt6358_volt_range_ops,	\
195 		.type = REGULATOR_VOLTAGE,	\
196 		.id = MT6366_ID_##vreg,	\
197 		.owner = THIS_MODULE,	\
198 		.n_voltages = ((max) - (min)) / (step) + 1,	\
199 		.min_uV = (min),		\
200 		.uV_step = (step),		\
201 		.vsel_reg = vosel,	\
202 		.vsel_mask = vosel_mask,	\
203 		.enable_reg = MT6358_LDO_##vreg##_CON0,	\
204 		.enable_mask = BIT(0),	\
205 	},	\
206 	.da_vsel_reg = _da_vsel_reg,	\
207 	.da_vsel_mask = _da_vsel_mask,	\
208 	.status_reg = MT6358_LDO_##vreg##_DBG1,	\
209 	.qi = BIT(0),	\
210 }
211 
212 #define MT6366_REG_FIXED(match, vreg,	\
213 	enreg, enbit, volt)	\
214 [MT6366_ID_##vreg] = {	\
215 	.desc = {	\
216 		.name = #vreg,	\
217 		.of_match = of_match_ptr(match),	\
218 		.ops = &mt6358_volt_fixed_ops,	\
219 		.type = REGULATOR_VOLTAGE,	\
220 		.id = MT6366_ID_##vreg,	\
221 		.owner = THIS_MODULE,	\
222 		.n_voltages = 1,	\
223 		.enable_reg = enreg,	\
224 		.enable_mask = BIT(enbit),	\
225 		.min_uV = volt,	\
226 	},	\
227 	.status_reg = MT6358_LDO_##vreg##_CON1,	\
228 	.qi = BIT(15),							\
229 }
230 
231 
232 static const unsigned int vdram2_voltages[] = {
233 	600000, 1800000,
234 };
235 
236 static const unsigned int vsim_voltages[] = {
237 	1700000, 1800000, 2700000, 3000000, 3100000,
238 };
239 
240 static const unsigned int vibr_voltages[] = {
241 	1200000, 1300000, 1500000, 1800000,
242 	2000000, 2800000, 3000000, 3300000,
243 };
244 
245 static const unsigned int vusb_voltages[] = {
246 	3000000, 3100000,
247 };
248 
249 static const unsigned int vcamd_voltages[] = {
250 	900000, 1000000, 1100000, 1200000,
251 	1300000, 1500000, 1800000,
252 };
253 
254 static const unsigned int vefuse_voltages[] = {
255 	1700000, 1800000, 1900000,
256 };
257 
258 static const unsigned int vmch_vemc_voltages[] = {
259 	2900000, 3000000, 3300000,
260 };
261 
262 static const unsigned int vcama_voltages[] = {
263 	1800000, 2500000, 2700000,
264 	2800000, 2900000, 3000000,
265 };
266 
267 static const unsigned int vcn33_voltages[] = {
268 	3300000, 3400000, 3500000,
269 };
270 
271 static const unsigned int vmc_voltages[] = {
272 	1800000, 2900000, 3000000, 3300000,
273 };
274 
275 static const unsigned int vldo28_voltages[] = {
276 	2800000, 3000000,
277 };
278 
279 static const u32 vdram2_idx[] = {
280 	0, 12,
281 };
282 
283 static const u32 vsim_idx[] = {
284 	3, 4, 8, 11, 12,
285 };
286 
287 static const u32 vibr_idx[] = {
288 	0, 1, 2, 4, 5, 9, 11, 13,
289 };
290 
291 static const u32 vusb_idx[] = {
292 	3, 4,
293 };
294 
295 static const u32 vcamd_idx[] = {
296 	3, 4, 5, 6, 7, 9, 12,
297 };
298 
299 static const u32 vefuse_idx[] = {
300 	11, 12, 13,
301 };
302 
303 static const u32 vmch_vemc_idx[] = {
304 	2, 3, 5,
305 };
306 
307 static const u32 vcama_idx[] = {
308 	0, 7, 9, 10, 11, 12,
309 };
310 
311 static const u32 vcn33_idx[] = {
312 	1, 2, 3,
313 };
314 
315 static const u32 vmc_idx[] = {
316 	4, 10, 11, 13,
317 };
318 
319 static const u32 vldo28_idx[] = {
320 	1, 3,
321 };
322 
323 static unsigned int mt6358_map_mode(unsigned int mode)
324 {
325 	return mode == MT6358_BUCK_MODE_AUTO ?
326 		REGULATOR_MODE_NORMAL : REGULATOR_MODE_FAST;
327 }
328 
329 static int mt6358_set_voltage_sel(struct regulator_dev *rdev,
330 				  unsigned int selector)
331 {
332 	const struct mt6358_regulator_info *info = to_regulator_info(rdev->desc);
333 	int idx, ret;
334 	const u32 *pvol;
335 
336 	pvol = info->index_table;
337 
338 	idx = pvol[selector];
339 	idx <<= ffs(info->desc.vsel_mask) - 1;
340 	ret = regmap_update_bits(rdev->regmap, info->desc.vsel_reg,
341 				 info->desc.vsel_mask, idx);
342 
343 	return ret;
344 }
345 
346 static int mt6358_get_voltage_sel(struct regulator_dev *rdev)
347 {
348 	const struct mt6358_regulator_info *info = to_regulator_info(rdev->desc);
349 	int idx, ret;
350 	u32 selector;
351 	const u32 *pvol;
352 
353 	ret = regmap_read(rdev->regmap, info->desc.vsel_reg, &selector);
354 	if (ret != 0) {
355 		dev_info(&rdev->dev,
356 			 "Failed to get mt6358 %s vsel reg: %d\n",
357 			 info->desc.name, ret);
358 		return ret;
359 	}
360 
361 	selector = (selector & info->desc.vsel_mask) >>
362 			(ffs(info->desc.vsel_mask) - 1);
363 	pvol = info->index_table;
364 	for (idx = 0; idx < info->desc.n_voltages; idx++) {
365 		if (pvol[idx] == selector)
366 			return idx;
367 	}
368 
369 	return -EINVAL;
370 }
371 
372 static int mt6358_get_buck_voltage_sel(struct regulator_dev *rdev)
373 {
374 	const struct mt6358_regulator_info *info = to_regulator_info(rdev->desc);
375 	int ret, regval;
376 
377 	ret = regmap_read(rdev->regmap, info->da_vsel_reg, &regval);
378 	if (ret != 0) {
379 		dev_err(&rdev->dev,
380 			"Failed to get mt6358 Buck %s vsel reg: %d\n",
381 			info->desc.name, ret);
382 		return ret;
383 	}
384 
385 	ret = (regval & info->da_vsel_mask) >> (ffs(info->da_vsel_mask) - 1);
386 
387 	return ret;
388 }
389 
390 static int mt6358_get_status(struct regulator_dev *rdev)
391 {
392 	const struct mt6358_regulator_info *info = to_regulator_info(rdev->desc);
393 	int ret;
394 	u32 regval;
395 
396 	ret = regmap_read(rdev->regmap, info->status_reg, &regval);
397 	if (ret != 0) {
398 		dev_info(&rdev->dev, "Failed to get enable reg: %d\n", ret);
399 		return ret;
400 	}
401 
402 	return (regval & info->qi) ? REGULATOR_STATUS_ON : REGULATOR_STATUS_OFF;
403 }
404 
405 static int mt6358_regulator_set_mode(struct regulator_dev *rdev,
406 				     unsigned int mode)
407 {
408 	const struct mt6358_regulator_info *info = to_regulator_info(rdev->desc);
409 	int val;
410 
411 	switch (mode) {
412 	case REGULATOR_MODE_FAST:
413 		val = MT6358_BUCK_MODE_FORCE_PWM;
414 		break;
415 	case REGULATOR_MODE_NORMAL:
416 		val = MT6358_BUCK_MODE_AUTO;
417 		break;
418 	default:
419 		return -EINVAL;
420 	}
421 
422 	dev_dbg(&rdev->dev, "mt6358 buck set_mode %#x, %#x, %#x\n",
423 		info->modeset_reg, info->modeset_mask, val);
424 
425 	val <<= ffs(info->modeset_mask) - 1;
426 
427 	return regmap_update_bits(rdev->regmap, info->modeset_reg,
428 				  info->modeset_mask, val);
429 }
430 
431 static unsigned int mt6358_regulator_get_mode(struct regulator_dev *rdev)
432 {
433 	const struct mt6358_regulator_info *info = to_regulator_info(rdev->desc);
434 	int ret, regval;
435 
436 	ret = regmap_read(rdev->regmap, info->modeset_reg, &regval);
437 	if (ret != 0) {
438 		dev_err(&rdev->dev,
439 			"Failed to get mt6358 buck mode: %d\n", ret);
440 		return ret;
441 	}
442 
443 	switch ((regval & info->modeset_mask) >> (ffs(info->modeset_mask) - 1)) {
444 	case MT6358_BUCK_MODE_AUTO:
445 		return REGULATOR_MODE_NORMAL;
446 	case MT6358_BUCK_MODE_FORCE_PWM:
447 		return REGULATOR_MODE_FAST;
448 	default:
449 		return -EINVAL;
450 	}
451 }
452 
453 static const struct regulator_ops mt6358_buck_ops = {
454 	.list_voltage = regulator_list_voltage_linear,
455 	.map_voltage = regulator_map_voltage_linear,
456 	.set_voltage_sel = regulator_set_voltage_sel_regmap,
457 	.get_voltage_sel = mt6358_get_buck_voltage_sel,
458 	.set_voltage_time_sel = regulator_set_voltage_time_sel,
459 	.enable = regulator_enable_regmap,
460 	.disable = regulator_disable_regmap,
461 	.is_enabled = regulator_is_enabled_regmap,
462 	.get_status = mt6358_get_status,
463 	.set_mode = mt6358_regulator_set_mode,
464 	.get_mode = mt6358_regulator_get_mode,
465 };
466 
467 static const struct regulator_ops mt6358_volt_range_ops = {
468 	.list_voltage = regulator_list_voltage_linear,
469 	.map_voltage = regulator_map_voltage_linear,
470 	.set_voltage_sel = regulator_set_voltage_sel_regmap,
471 	.get_voltage_sel = mt6358_get_buck_voltage_sel,
472 	.set_voltage_time_sel = regulator_set_voltage_time_sel,
473 	.enable = regulator_enable_regmap,
474 	.disable = regulator_disable_regmap,
475 	.is_enabled = regulator_is_enabled_regmap,
476 	.get_status = mt6358_get_status,
477 };
478 
479 static const struct regulator_ops mt6358_volt_table_ops = {
480 	.list_voltage = regulator_list_voltage_table,
481 	.map_voltage = regulator_map_voltage_iterate,
482 	.set_voltage_sel = mt6358_set_voltage_sel,
483 	.get_voltage_sel = mt6358_get_voltage_sel,
484 	.set_voltage_time_sel = regulator_set_voltage_time_sel,
485 	.enable = regulator_enable_regmap,
486 	.disable = regulator_disable_regmap,
487 	.is_enabled = regulator_is_enabled_regmap,
488 	.get_status = mt6358_get_status,
489 };
490 
491 static const struct regulator_ops mt6358_volt_fixed_ops = {
492 	.list_voltage = regulator_list_voltage_linear,
493 	.enable = regulator_enable_regmap,
494 	.disable = regulator_disable_regmap,
495 	.is_enabled = regulator_is_enabled_regmap,
496 	.get_status = mt6358_get_status,
497 };
498 
499 /* The array is indexed by id(MT6358_ID_XXX) */
500 static const struct mt6358_regulator_info mt6358_regulators[] = {
501 	MT6358_BUCK("buck_vdram1", VDRAM1, 500000, 2087500, 12500,
502 		    0x7f, MT6358_BUCK_VDRAM1_DBG0, 0x7f, MT6358_VDRAM1_ANA_CON0, 8),
503 	MT6358_BUCK("buck_vcore", VCORE, 500000, 1293750, 6250,
504 		    0x7f, MT6358_BUCK_VCORE_DBG0, 0x7f, MT6358_VCORE_VGPU_ANA_CON0, 1),
505 	MT6358_BUCK("buck_vpa", VPA, 500000, 3650000, 50000,
506 		    0x3f, MT6358_BUCK_VPA_DBG0, 0x3f, MT6358_VPA_ANA_CON0, 3),
507 	MT6358_BUCK("buck_vproc11", VPROC11, 500000, 1293750, 6250,
508 		    0x7f, MT6358_BUCK_VPROC11_DBG0, 0x7f, MT6358_VPROC_ANA_CON0, 1),
509 	MT6358_BUCK("buck_vproc12", VPROC12, 500000, 1293750, 6250,
510 		    0x7f, MT6358_BUCK_VPROC12_DBG0, 0x7f, MT6358_VPROC_ANA_CON0, 2),
511 	MT6358_BUCK("buck_vgpu", VGPU, 500000, 1293750, 6250,
512 		    0x7f, MT6358_BUCK_VGPU_ELR0, 0x7f, MT6358_VCORE_VGPU_ANA_CON0, 2),
513 	MT6358_BUCK("buck_vs2", VS2, 500000, 2087500, 12500,
514 		    0x7f, MT6358_BUCK_VS2_DBG0, 0x7f, MT6358_VS2_ANA_CON0, 8),
515 	MT6358_BUCK("buck_vmodem", VMODEM, 500000, 1293750, 6250,
516 		    0x7f, MT6358_BUCK_VMODEM_DBG0, 0x7f, MT6358_VMODEM_ANA_CON0, 8),
517 	MT6358_BUCK("buck_vs1", VS1, 1000000, 2587500, 12500,
518 		    0x7f, MT6358_BUCK_VS1_DBG0, 0x7f, MT6358_VS1_ANA_CON0, 8),
519 	MT6358_REG_FIXED("ldo_vrf12", VRF12,
520 			 MT6358_LDO_VRF12_CON0, 0, 1200000),
521 	MT6358_REG_FIXED("ldo_vio18", VIO18,
522 			 MT6358_LDO_VIO18_CON0, 0, 1800000),
523 	MT6358_REG_FIXED("ldo_vcamio", VCAMIO,
524 			 MT6358_LDO_VCAMIO_CON0, 0, 1800000),
525 	MT6358_REG_FIXED("ldo_vcn18", VCN18, MT6358_LDO_VCN18_CON0, 0, 1800000),
526 	MT6358_REG_FIXED("ldo_vfe28", VFE28, MT6358_LDO_VFE28_CON0, 0, 2800000),
527 	MT6358_REG_FIXED("ldo_vcn28", VCN28, MT6358_LDO_VCN28_CON0, 0, 2800000),
528 	MT6358_REG_FIXED("ldo_vxo22", VXO22, MT6358_LDO_VXO22_CON0, 0, 2200000),
529 	MT6358_REG_FIXED("ldo_vaux18", VAUX18,
530 			 MT6358_LDO_VAUX18_CON0, 0, 1800000),
531 	MT6358_REG_FIXED("ldo_vbif28", VBIF28,
532 			 MT6358_LDO_VBIF28_CON0, 0, 2800000),
533 	MT6358_REG_FIXED("ldo_vio28", VIO28, MT6358_LDO_VIO28_CON0, 0, 2800000),
534 	MT6358_REG_FIXED("ldo_va12", VA12, MT6358_LDO_VA12_CON0, 0, 1200000),
535 	MT6358_REG_FIXED("ldo_vrf18", VRF18, MT6358_LDO_VRF18_CON0, 0, 1800000),
536 	MT6358_REG_FIXED("ldo_vaud28", VAUD28,
537 			 MT6358_LDO_VAUD28_CON0, 0, 2800000),
538 	MT6358_LDO("ldo_vdram2", VDRAM2, vdram2_voltages, vdram2_idx,
539 		   MT6358_LDO_VDRAM2_CON0, 0, MT6358_LDO_VDRAM2_ELR0, 0xf),
540 	MT6358_LDO("ldo_vsim1", VSIM1, vsim_voltages, vsim_idx,
541 		   MT6358_LDO_VSIM1_CON0, 0, MT6358_VSIM1_ANA_CON0, 0xf00),
542 	MT6358_LDO("ldo_vibr", VIBR, vibr_voltages, vibr_idx,
543 		   MT6358_LDO_VIBR_CON0, 0, MT6358_VIBR_ANA_CON0, 0xf00),
544 	MT6358_LDO("ldo_vusb", VUSB, vusb_voltages, vusb_idx,
545 		   MT6358_LDO_VUSB_CON0_0, 0, MT6358_VUSB_ANA_CON0, 0x700),
546 	MT6358_LDO("ldo_vcamd", VCAMD, vcamd_voltages, vcamd_idx,
547 		   MT6358_LDO_VCAMD_CON0, 0, MT6358_VCAMD_ANA_CON0, 0xf00),
548 	MT6358_LDO("ldo_vefuse", VEFUSE, vefuse_voltages, vefuse_idx,
549 		   MT6358_LDO_VEFUSE_CON0, 0, MT6358_VEFUSE_ANA_CON0, 0xf00),
550 	MT6358_LDO("ldo_vmch", VMCH, vmch_vemc_voltages, vmch_vemc_idx,
551 		   MT6358_LDO_VMCH_CON0, 0, MT6358_VMCH_ANA_CON0, 0x700),
552 	MT6358_LDO("ldo_vcama1", VCAMA1, vcama_voltages, vcama_idx,
553 		   MT6358_LDO_VCAMA1_CON0, 0, MT6358_VCAMA1_ANA_CON0, 0xf00),
554 	MT6358_LDO("ldo_vemc", VEMC, vmch_vemc_voltages, vmch_vemc_idx,
555 		   MT6358_LDO_VEMC_CON0, 0, MT6358_VEMC_ANA_CON0, 0x700),
556 	MT6358_LDO("ldo_vcn33", VCN33, vcn33_voltages, vcn33_idx,
557 		   MT6358_LDO_VCN33_CON0_0, 0, MT6358_VCN33_ANA_CON0, 0x300),
558 	MT6358_LDO("ldo_vcama2", VCAMA2, vcama_voltages, vcama_idx,
559 		   MT6358_LDO_VCAMA2_CON0, 0, MT6358_VCAMA2_ANA_CON0, 0xf00),
560 	MT6358_LDO("ldo_vmc", VMC, vmc_voltages, vmc_idx,
561 		   MT6358_LDO_VMC_CON0, 0, MT6358_VMC_ANA_CON0, 0xf00),
562 	MT6358_LDO("ldo_vldo28", VLDO28, vldo28_voltages, vldo28_idx,
563 		   MT6358_LDO_VLDO28_CON0_0, 0,
564 		   MT6358_VLDO28_ANA_CON0, 0x300),
565 	MT6358_LDO("ldo_vsim2", VSIM2, vsim_voltages, vsim_idx,
566 		   MT6358_LDO_VSIM2_CON0, 0, MT6358_VSIM2_ANA_CON0, 0xf00),
567 	MT6358_LDO1("ldo_vsram_proc11", VSRAM_PROC11, 500000, 1293750, 6250,
568 		    MT6358_LDO_VSRAM_PROC11_DBG0, 0x7f00, MT6358_LDO_VSRAM_CON0, 0x7f),
569 	MT6358_LDO1("ldo_vsram_others", VSRAM_OTHERS, 500000, 1293750, 6250,
570 		    MT6358_LDO_VSRAM_OTHERS_DBG0, 0x7f00, MT6358_LDO_VSRAM_CON2, 0x7f),
571 	MT6358_LDO1("ldo_vsram_gpu", VSRAM_GPU, 500000, 1293750, 6250,
572 		    MT6358_LDO_VSRAM_GPU_DBG0, 0x7f00, MT6358_LDO_VSRAM_CON3, 0x7f),
573 	MT6358_LDO1("ldo_vsram_proc12", VSRAM_PROC12, 500000, 1293750, 6250,
574 		    MT6358_LDO_VSRAM_PROC12_DBG0, 0x7f00, MT6358_LDO_VSRAM_CON1, 0x7f),
575 };
576 
577 /* The array is indexed by id(MT6366_ID_XXX) */
578 static const struct mt6358_regulator_info mt6366_regulators[] = {
579 	MT6366_BUCK("buck_vdram1", VDRAM1, 500000, 2087500, 12500,
580 		    0x7f, MT6358_BUCK_VDRAM1_DBG0, 0x7f, MT6358_VDRAM1_ANA_CON0, 8),
581 	MT6366_BUCK("buck_vcore", VCORE, 500000, 1293750, 6250,
582 		    0x7f, MT6358_BUCK_VCORE_DBG0, 0x7f, MT6358_VCORE_VGPU_ANA_CON0, 1),
583 	MT6366_BUCK("buck_vpa", VPA, 500000, 3650000, 50000,
584 		    0x3f, MT6358_BUCK_VPA_DBG0, 0x3f, MT6358_VPA_ANA_CON0, 3),
585 	MT6366_BUCK("buck_vproc11", VPROC11, 500000, 1293750, 6250,
586 		    0x7f, MT6358_BUCK_VPROC11_DBG0, 0x7f, MT6358_VPROC_ANA_CON0, 1),
587 	MT6366_BUCK("buck_vproc12", VPROC12, 500000, 1293750, 6250,
588 		    0x7f, MT6358_BUCK_VPROC12_DBG0, 0x7f, MT6358_VPROC_ANA_CON0, 2),
589 	MT6366_BUCK("buck_vgpu", VGPU, 500000, 1293750, 6250,
590 		    0x7f, MT6358_BUCK_VGPU_ELR0, 0x7f, MT6358_VCORE_VGPU_ANA_CON0, 2),
591 	MT6366_BUCK("buck_vs2", VS2, 500000, 2087500, 12500,
592 		    0x7f, MT6358_BUCK_VS2_DBG0, 0x7f, MT6358_VS2_ANA_CON0, 8),
593 	MT6366_BUCK("buck_vmodem", VMODEM, 500000, 1293750, 6250,
594 		    0x7f, MT6358_BUCK_VMODEM_DBG0, 0x7f, MT6358_VMODEM_ANA_CON0, 8),
595 	MT6366_BUCK("buck_vs1", VS1, 1000000, 2587500, 12500,
596 		    0x7f, MT6358_BUCK_VS1_DBG0, 0x7f, MT6358_VS1_ANA_CON0, 8),
597 	MT6366_REG_FIXED("ldo_vrf12", VRF12,
598 			 MT6358_LDO_VRF12_CON0, 0, 1200000),
599 	MT6366_REG_FIXED("ldo_vio18", VIO18,
600 			 MT6358_LDO_VIO18_CON0, 0, 1800000),
601 	MT6366_REG_FIXED("ldo_vcn18", VCN18, MT6358_LDO_VCN18_CON0, 0, 1800000),
602 	MT6366_REG_FIXED("ldo_vfe28", VFE28, MT6358_LDO_VFE28_CON0, 0, 2800000),
603 	MT6366_REG_FIXED("ldo_vcn28", VCN28, MT6358_LDO_VCN28_CON0, 0, 2800000),
604 	MT6366_REG_FIXED("ldo_vxo22", VXO22, MT6358_LDO_VXO22_CON0, 0, 2200000),
605 	MT6366_REG_FIXED("ldo_vaux18", VAUX18,
606 			 MT6358_LDO_VAUX18_CON0, 0, 1800000),
607 	MT6366_REG_FIXED("ldo_vbif28", VBIF28,
608 			 MT6358_LDO_VBIF28_CON0, 0, 2800000),
609 	MT6366_REG_FIXED("ldo_vio28", VIO28, MT6358_LDO_VIO28_CON0, 0, 2800000),
610 	MT6366_REG_FIXED("ldo_va12", VA12, MT6358_LDO_VA12_CON0, 0, 1200000),
611 	MT6366_REG_FIXED("ldo_vrf18", VRF18, MT6358_LDO_VRF18_CON0, 0, 1800000),
612 	MT6366_REG_FIXED("ldo_vaud28", VAUD28,
613 			 MT6358_LDO_VAUD28_CON0, 0, 2800000),
614 	MT6366_LDO("ldo_vdram2", VDRAM2, vdram2_voltages, vdram2_idx,
615 		   MT6358_LDO_VDRAM2_CON0, 0, MT6358_LDO_VDRAM2_ELR0, 0x10),
616 	MT6366_LDO("ldo_vsim1", VSIM1, vsim_voltages, vsim_idx,
617 		   MT6358_LDO_VSIM1_CON0, 0, MT6358_VSIM1_ANA_CON0, 0xf00),
618 	MT6366_LDO("ldo_vibr", VIBR, vibr_voltages, vibr_idx,
619 		   MT6358_LDO_VIBR_CON0, 0, MT6358_VIBR_ANA_CON0, 0xf00),
620 	MT6366_LDO("ldo_vusb", VUSB, vusb_voltages, vusb_idx,
621 		   MT6358_LDO_VUSB_CON0_0, 0, MT6358_VUSB_ANA_CON0, 0x700),
622 	MT6366_LDO("ldo_vefuse", VEFUSE, vefuse_voltages, vefuse_idx,
623 		   MT6358_LDO_VEFUSE_CON0, 0, MT6358_VEFUSE_ANA_CON0, 0xf00),
624 	MT6366_LDO("ldo_vmch", VMCH, vmch_vemc_voltages, vmch_vemc_idx,
625 		   MT6358_LDO_VMCH_CON0, 0, MT6358_VMCH_ANA_CON0, 0x700),
626 	MT6366_LDO("ldo_vemc", VEMC, vmch_vemc_voltages, vmch_vemc_idx,
627 		   MT6358_LDO_VEMC_CON0, 0, MT6358_VEMC_ANA_CON0, 0x700),
628 	MT6366_LDO("ldo_vcn33", VCN33, vcn33_voltages, vcn33_idx,
629 		   MT6358_LDO_VCN33_CON0_0, 0, MT6358_VCN33_ANA_CON0, 0x300),
630 	MT6366_LDO("ldo_vmc", VMC, vmc_voltages, vmc_idx,
631 		   MT6358_LDO_VMC_CON0, 0, MT6358_VMC_ANA_CON0, 0xf00),
632 	MT6366_LDO("ldo_vsim2", VSIM2, vsim_voltages, vsim_idx,
633 		   MT6358_LDO_VSIM2_CON0, 0, MT6358_VSIM2_ANA_CON0, 0xf00),
634 	MT6366_LDO1("ldo_vsram_proc11", VSRAM_PROC11, 500000, 1293750, 6250,
635 		    MT6358_LDO_VSRAM_PROC11_DBG0, 0x7f00, MT6358_LDO_VSRAM_CON0, 0x7f),
636 	MT6366_LDO1("ldo_vsram_others", VSRAM_OTHERS, 500000, 1293750, 6250,
637 		    MT6358_LDO_VSRAM_OTHERS_DBG0, 0x7f00, MT6358_LDO_VSRAM_CON2, 0x7f),
638 	MT6366_LDO1("ldo_vsram_gpu", VSRAM_GPU, 500000, 1293750, 6250,
639 		    MT6358_LDO_VSRAM_GPU_DBG0, 0x7f00, MT6358_LDO_VSRAM_CON3, 0x7f),
640 	MT6366_LDO1("ldo_vsram_proc12", VSRAM_PROC12, 500000, 1293750, 6250,
641 		    MT6358_LDO_VSRAM_PROC12_DBG0, 0x7f00, MT6358_LDO_VSRAM_CON1, 0x7f),
642 };
643 
644 static int mt6358_sync_vcn33_setting(struct device *dev)
645 {
646 	struct mt6397_chip *mt6397 = dev_get_drvdata(dev->parent);
647 	unsigned int val;
648 	int ret;
649 
650 	/*
651 	 * VCN33_WIFI and VCN33_BT are two separate enable bits for the same
652 	 * regulator. They share the same voltage setting and output pin.
653 	 * Instead of having two potentially conflicting regulators, just have
654 	 * one VCN33 regulator. Sync the two enable bits and only use one in
655 	 * the regulator device.
656 	 */
657 	ret = regmap_read(mt6397->regmap, MT6358_LDO_VCN33_CON0_1, &val);
658 	if (ret) {
659 		dev_err(dev, "Failed to read VCN33_WIFI setting\n");
660 		return ret;
661 	}
662 
663 	if (!(val & BIT(0)))
664 		return 0;
665 
666 	/* Sync VCN33_WIFI enable status to VCN33_BT */
667 	ret = regmap_update_bits(mt6397->regmap, MT6358_LDO_VCN33_CON0_0, BIT(0), BIT(0));
668 	if (ret) {
669 		dev_err(dev, "Failed to sync VCN33_WIFI setting to VCN33_BT\n");
670 		return ret;
671 	}
672 
673 	/* Disable VCN33_WIFI */
674 	ret = regmap_update_bits(mt6397->regmap, MT6358_LDO_VCN33_CON0_1, BIT(0), 0);
675 	if (ret) {
676 		dev_err(dev, "Failed to disable VCN33_WIFI\n");
677 		return ret;
678 	}
679 
680 	return 0;
681 }
682 
683 static int mt6358_regulator_probe(struct platform_device *pdev)
684 {
685 	struct mt6397_chip *mt6397 = dev_get_drvdata(pdev->dev.parent);
686 	struct regulator_config config = {};
687 	struct regulator_dev *rdev;
688 	const struct mt6358_regulator_info *mt6358_info;
689 	int i, max_regulator, ret;
690 
691 	switch (mt6397->chip_id) {
692 	case MT6358_CHIP_ID:
693 		max_regulator = MT6358_MAX_REGULATOR;
694 		mt6358_info = mt6358_regulators;
695 		break;
696 	case MT6366_CHIP_ID:
697 		max_regulator = MT6366_MAX_REGULATOR;
698 		mt6358_info = mt6366_regulators;
699 		break;
700 	default:
701 		dev_err(&pdev->dev, "unsupported chip ID: %d\n", mt6397->chip_id);
702 		return -EINVAL;
703 	}
704 
705 	ret = mt6358_sync_vcn33_setting(&pdev->dev);
706 	if (ret)
707 		return ret;
708 
709 	for (i = 0; i < max_regulator; i++) {
710 		config.dev = &pdev->dev;
711 		config.regmap = mt6397->regmap;
712 
713 		rdev = devm_regulator_register(&pdev->dev,
714 					       &mt6358_info[i].desc,
715 					       &config);
716 		if (IS_ERR(rdev)) {
717 			dev_err(&pdev->dev, "failed to register %s\n",
718 				mt6358_info[i].desc.name);
719 			return PTR_ERR(rdev);
720 		}
721 	}
722 
723 	return 0;
724 }
725 
726 static const struct platform_device_id mt6358_platform_ids[] = {
727 	{"mt6358-regulator", 0},
728 	{ /* sentinel */ },
729 };
730 MODULE_DEVICE_TABLE(platform, mt6358_platform_ids);
731 
732 static struct platform_driver mt6358_regulator_driver = {
733 	.driver = {
734 		.name = "mt6358-regulator",
735 		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
736 	},
737 	.probe = mt6358_regulator_probe,
738 	.id_table = mt6358_platform_ids,
739 };
740 
741 module_platform_driver(mt6358_regulator_driver);
742 
743 MODULE_AUTHOR("Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>");
744 MODULE_DESCRIPTION("Regulator Driver for MediaTek MT6358 PMIC");
745 MODULE_LICENSE("GPL");
746