1 // SPDX-License-Identifier: GPL-2.0+
2 //
3 // Regulator driver for ATC260x PMICs
4 //
5 // Copyright (C) 2019 Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
6 // Copyright (C) 2020 Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
7 
8 #include <linux/mfd/atc260x/core.h>
9 #include <linux/module.h>
10 #include <linux/of_device.h>
11 #include <linux/regmap.h>
12 #include <linux/regulator/driver.h>
13 
14 struct atc260x_regulator_data {
15 	int voltage_time_dcdc;
16 	int voltage_time_ldo;
17 };
18 
19 static const struct linear_range atc2603c_dcdc_voltage_ranges[] = {
20 	REGULATOR_LINEAR_RANGE(1300000, 0, 13, 50000),
21 	REGULATOR_LINEAR_RANGE(1950000, 14, 15, 100000),
22 };
23 
24 static const struct linear_range atc2609a_dcdc_voltage_ranges[] = {
25 	REGULATOR_LINEAR_RANGE(600000, 0, 127, 6250),
26 	REGULATOR_LINEAR_RANGE(1400000, 128, 232, 25000),
27 };
28 
29 static const struct linear_range atc2609a_ldo_voltage_ranges0[] = {
30 	REGULATOR_LINEAR_RANGE(700000, 0, 15, 100000),
31 	REGULATOR_LINEAR_RANGE(2100000, 0, 12, 100000),
32 };
33 
34 static const struct linear_range atc2609a_ldo_voltage_ranges1[] = {
35 	REGULATOR_LINEAR_RANGE(850000, 0, 15, 100000),
36 	REGULATOR_LINEAR_RANGE(2100000, 0, 11, 100000),
37 };
38 
39 static const unsigned int atc260x_ldo_voltage_range_sel[] = {
40 	0x0, 0x20,
41 };
42 
43 static int atc260x_dcdc_set_voltage_time_sel(struct regulator_dev *rdev,
44 					     unsigned int old_selector,
45 					     unsigned int new_selector)
46 {
47 	struct atc260x_regulator_data *data = rdev_get_drvdata(rdev);
48 
49 	if (new_selector > old_selector)
50 		return data->voltage_time_dcdc;
51 
52 	return 0;
53 }
54 
55 static int atc260x_ldo_set_voltage_time_sel(struct regulator_dev *rdev,
56 					    unsigned int old_selector,
57 					    unsigned int new_selector)
58 {
59 	struct atc260x_regulator_data *data = rdev_get_drvdata(rdev);
60 
61 	if (new_selector > old_selector)
62 		return data->voltage_time_ldo;
63 
64 	return 0;
65 }
66 
67 static const struct regulator_ops atc260x_dcdc_ops = {
68 	.enable	= regulator_enable_regmap,
69 	.disable = regulator_disable_regmap,
70 	.is_enabled = regulator_is_enabled_regmap,
71 	.list_voltage = regulator_list_voltage_linear,
72 	.set_voltage_sel = regulator_set_voltage_sel_regmap,
73 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
74 	.set_voltage_time_sel = atc260x_dcdc_set_voltage_time_sel,
75 };
76 
77 static const struct regulator_ops atc260x_ldo_ops = {
78 	.enable	= regulator_enable_regmap,
79 	.disable = regulator_disable_regmap,
80 	.is_enabled = regulator_is_enabled_regmap,
81 	.list_voltage = regulator_list_voltage_linear,
82 	.set_voltage_sel = regulator_set_voltage_sel_regmap,
83 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
84 	.set_voltage_time_sel = atc260x_ldo_set_voltage_time_sel,
85 };
86 
87 static const struct regulator_ops atc260x_ldo_bypass_ops = {
88 	.enable	= regulator_enable_regmap,
89 	.disable = regulator_disable_regmap,
90 	.is_enabled = regulator_is_enabled_regmap,
91 	.list_voltage = regulator_list_voltage_linear,
92 	.set_voltage_sel = regulator_set_voltage_sel_regmap,
93 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
94 	.set_voltage_time_sel = atc260x_ldo_set_voltage_time_sel,
95 	.set_bypass = regulator_set_bypass_regmap,
96 	.get_bypass = regulator_get_bypass_regmap,
97 };
98 
99 static const struct regulator_ops atc260x_ldo_bypass_discharge_ops = {
100 	.enable	= regulator_enable_regmap,
101 	.disable = regulator_disable_regmap,
102 	.is_enabled = regulator_is_enabled_regmap,
103 	.list_voltage = regulator_list_voltage_linear,
104 	.set_voltage_sel = regulator_set_voltage_sel_regmap,
105 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
106 	.set_voltage_time_sel = atc260x_ldo_set_voltage_time_sel,
107 	.set_bypass = regulator_set_bypass_regmap,
108 	.get_bypass = regulator_get_bypass_regmap,
109 	.set_active_discharge = regulator_set_active_discharge_regmap,
110 };
111 
112 static const struct regulator_ops atc260x_dcdc_range_ops = {
113 	.enable	= regulator_enable_regmap,
114 	.disable = regulator_disable_regmap,
115 	.is_enabled = regulator_is_enabled_regmap,
116 	.list_voltage = regulator_list_voltage_linear_range,
117 	.set_voltage_sel = regulator_set_voltage_sel_regmap,
118 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
119 	.set_voltage_time_sel = atc260x_dcdc_set_voltage_time_sel,
120 };
121 
122 static const struct regulator_ops atc260x_ldo_range_pick_ops = {
123 	.enable	= regulator_enable_regmap,
124 	.disable = regulator_disable_regmap,
125 	.is_enabled = regulator_is_enabled_regmap,
126 	.list_voltage = regulator_list_voltage_pickable_linear_range,
127 	.set_voltage_sel = regulator_set_voltage_sel_pickable_regmap,
128 	.get_voltage_sel = regulator_get_voltage_sel_pickable_regmap,
129 	.set_voltage_time_sel = atc260x_ldo_set_voltage_time_sel,
130 };
131 
132 static const struct regulator_ops atc260x_dcdc_fixed_ops = {
133 	.list_voltage = regulator_list_voltage_linear,
134 	.set_voltage_sel = regulator_set_voltage_sel_regmap,
135 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
136 	.set_voltage_time_sel = atc260x_dcdc_set_voltage_time_sel,
137 };
138 
139 static const struct regulator_ops atc260x_ldo_fixed_ops = {
140 	.list_voltage = regulator_list_voltage_linear,
141 	.set_voltage_sel = regulator_set_voltage_sel_regmap,
142 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
143 	.set_voltage_time_sel = atc260x_ldo_set_voltage_time_sel,
144 };
145 
146 static const struct regulator_ops atc260x_no_ops = {
147 };
148 
149 /*
150  * Note LDO8 is not documented in datasheet (v2.4), but supported
151  * in the vendor's driver implementation (xapp-le-kernel).
152  */
153 enum atc2603c_reg_ids {
154 	ATC2603C_ID_DCDC1,
155 	ATC2603C_ID_DCDC2,
156 	ATC2603C_ID_DCDC3,
157 	ATC2603C_ID_LDO1,
158 	ATC2603C_ID_LDO2,
159 	ATC2603C_ID_LDO3,
160 	ATC2603C_ID_LDO5,
161 	ATC2603C_ID_LDO6,
162 	ATC2603C_ID_LDO7,
163 	ATC2603C_ID_LDO8,
164 	ATC2603C_ID_LDO11,
165 	ATC2603C_ID_LDO12,
166 	ATC2603C_ID_SWITCHLDO1,
167 	ATC2603C_ID_MAX,
168 };
169 
170 #define atc2603c_reg_desc_dcdc(num, min, step, n_volt, vsel_h, vsel_l) { \
171 	.name = "DCDC"#num, \
172 	.supply_name = "dcdc"#num, \
173 	.of_match = of_match_ptr("dcdc"#num), \
174 	.regulators_node = of_match_ptr("regulators"), \
175 	.id = ATC2603C_ID_DCDC##num, \
176 	.ops = &atc260x_dcdc_ops, \
177 	.type = REGULATOR_VOLTAGE, \
178 	.min_uV = min, \
179 	.uV_step = step, \
180 	.n_voltages = n_volt, \
181 	.vsel_reg = ATC2603C_PMU_DC##num##_CTL0, \
182 	.vsel_mask = GENMASK(vsel_h, vsel_l), \
183 	.enable_reg = ATC2603C_PMU_DC##num##_CTL0, \
184 	.enable_mask = BIT(15), \
185 	.enable_time = 800, \
186 	.owner = THIS_MODULE, \
187 }
188 
189 #define atc2603c_reg_desc_dcdc_range(num, vsel_h, vsel_l) { \
190 	.name = "DCDC"#num, \
191 	.supply_name = "dcdc"#num, \
192 	.of_match = of_match_ptr("dcdc"#num), \
193 	.regulators_node = of_match_ptr("regulators"), \
194 	.id = ATC2603C_ID_DCDC##num, \
195 	.ops = &atc260x_dcdc_range_ops, \
196 	.type = REGULATOR_VOLTAGE, \
197 	.n_voltages = 16, \
198 	.linear_ranges = atc2603c_dcdc_voltage_ranges, \
199 	.n_linear_ranges = ARRAY_SIZE(atc2603c_dcdc_voltage_ranges), \
200 	.vsel_reg = ATC2603C_PMU_DC##num##_CTL0, \
201 	.vsel_mask = GENMASK(vsel_h, vsel_l), \
202 	.enable_reg = ATC2603C_PMU_DC##num##_CTL0, \
203 	.enable_mask = BIT(15), \
204 	.enable_time = 800, \
205 	.owner = THIS_MODULE, \
206 }
207 
208 #define atc2603c_reg_desc_dcdc_fixed(num, min, step, n_volt, vsel_h, vsel_l) { \
209 	.name = "DCDC"#num, \
210 	.supply_name = "dcdc"#num, \
211 	.of_match = of_match_ptr("dcdc"#num), \
212 	.regulators_node = of_match_ptr("regulators"), \
213 	.id = ATC2603C_ID_DCDC##num, \
214 	.ops = &atc260x_dcdc_fixed_ops, \
215 	.type = REGULATOR_VOLTAGE, \
216 	.min_uV = min, \
217 	.uV_step = step, \
218 	.n_voltages = n_volt, \
219 	.vsel_reg = ATC2603C_PMU_DC##num##_CTL0, \
220 	.vsel_mask = GENMASK(vsel_h, vsel_l), \
221 	.enable_time = 800, \
222 	.owner = THIS_MODULE, \
223 }
224 
225 #define atc2603c_reg_desc_ldo(num, min, step, n_volt, vsel_h, vsel_l) { \
226 	.name = "LDO"#num, \
227 	.supply_name = "ldo"#num, \
228 	.of_match = of_match_ptr("ldo"#num), \
229 	.regulators_node = of_match_ptr("regulators"), \
230 	.id = ATC2603C_ID_LDO##num, \
231 	.ops = &atc260x_ldo_ops, \
232 	.type = REGULATOR_VOLTAGE, \
233 	.min_uV = min, \
234 	.uV_step = step, \
235 	.n_voltages = n_volt, \
236 	.vsel_reg = ATC2603C_PMU_LDO##num##_CTL, \
237 	.vsel_mask = GENMASK(vsel_h, vsel_l), \
238 	.enable_reg = ATC2603C_PMU_LDO##num##_CTL, \
239 	.enable_mask = BIT(0), \
240 	.enable_time = 2000, \
241 	.owner = THIS_MODULE, \
242 }
243 
244 #define atc2603c_reg_desc_ldo_fixed(num, min, step, n_volt, vsel_h, vsel_l) { \
245 	.name = "LDO"#num, \
246 	.supply_name = "ldo"#num, \
247 	.of_match = of_match_ptr("ldo"#num), \
248 	.regulators_node = of_match_ptr("regulators"), \
249 	.id = ATC2603C_ID_LDO##num, \
250 	.ops = &atc260x_ldo_fixed_ops, \
251 	.type = REGULATOR_VOLTAGE, \
252 	.min_uV = min, \
253 	.uV_step = step, \
254 	.n_voltages = n_volt, \
255 	.vsel_reg = ATC2603C_PMU_LDO##num##_CTL, \
256 	.vsel_mask = GENMASK(vsel_h, vsel_l), \
257 	.enable_time = 2000, \
258 	.owner = THIS_MODULE, \
259 }
260 
261 #define atc2603c_reg_desc_ldo_noops(num, vfixed) { \
262 	.name = "LDO"#num, \
263 	.supply_name = "ldo"#num, \
264 	.of_match = of_match_ptr("ldo"#num), \
265 	.regulators_node = of_match_ptr("regulators"), \
266 	.id = ATC2603C_ID_LDO##num, \
267 	.ops = &atc260x_no_ops, \
268 	.type = REGULATOR_VOLTAGE, \
269 	.fixed_uV = vfixed, \
270 	.n_voltages = 1, \
271 	.owner = THIS_MODULE, \
272 }
273 
274 #define atc2603c_reg_desc_ldo_switch(num, min, step, n_volt, vsel_h, vsel_l) { \
275 	.name = "SWITCHLDO"#num, \
276 	.supply_name = "switchldo"#num, \
277 	.of_match = of_match_ptr("switchldo"#num), \
278 	.regulators_node = of_match_ptr("regulators"), \
279 	.id = ATC2603C_ID_SWITCHLDO##num, \
280 	.ops = &atc260x_ldo_bypass_discharge_ops, \
281 	.type = REGULATOR_VOLTAGE, \
282 	.min_uV = min, \
283 	.uV_step = step, \
284 	.n_voltages = n_volt, \
285 	.vsel_reg = ATC2603C_PMU_SWITCH_CTL, \
286 	.vsel_mask = GENMASK(vsel_h, vsel_l), \
287 	.enable_reg = ATC2603C_PMU_SWITCH_CTL, \
288 	.enable_mask = BIT(15), \
289 	.enable_is_inverted = true, \
290 	.enable_time = 2000, \
291 	.bypass_reg = ATC2603C_PMU_SWITCH_CTL, \
292 	.bypass_mask = BIT(5), \
293 	.active_discharge_reg = ATC2603C_PMU_SWITCH_CTL, \
294 	.active_discharge_mask = BIT(1), \
295 	.active_discharge_on = BIT(1), \
296 	.owner = THIS_MODULE, \
297 }
298 
299 static const struct regulator_desc atc2603c_reg[] = {
300 	atc2603c_reg_desc_dcdc_fixed(1, 700000, 25000, 29, 11, 7),
301 	atc2603c_reg_desc_dcdc_range(2, 12, 8),
302 	atc2603c_reg_desc_dcdc_fixed(3, 2600000, 100000, 8, 11, 9),
303 	atc2603c_reg_desc_ldo_fixed(1, 2600000, 100000, 8, 15, 13),
304 	atc2603c_reg_desc_ldo_fixed(2, 2600000, 100000, 8, 15, 13),
305 	atc2603c_reg_desc_ldo_fixed(3, 1500000, 100000, 6, 15, 13),
306 	atc2603c_reg_desc_ldo(5, 2600000, 100000, 8, 15, 13),
307 	atc2603c_reg_desc_ldo_fixed(6, 700000, 25000, 29, 15, 11),
308 	atc2603c_reg_desc_ldo(7, 1500000, 100000, 6, 15, 13),
309 	atc2603c_reg_desc_ldo(8, 2300000, 100000, 11, 15, 12),
310 	atc2603c_reg_desc_ldo_fixed(11, 2600000, 100000, 8, 15, 13),
311 	atc2603c_reg_desc_ldo_noops(12, 1800000),
312 	atc2603c_reg_desc_ldo_switch(1, 3000000, 100000, 4, 4, 3),
313 };
314 
315 static const struct regulator_desc atc2603c_reg_dcdc2_ver_b =
316 	atc2603c_reg_desc_dcdc(2, 1000000, 50000, 18, 12, 8);
317 
318 enum atc2609a_reg_ids {
319 	ATC2609A_ID_DCDC0,
320 	ATC2609A_ID_DCDC1,
321 	ATC2609A_ID_DCDC2,
322 	ATC2609A_ID_DCDC3,
323 	ATC2609A_ID_DCDC4,
324 	ATC2609A_ID_LDO0,
325 	ATC2609A_ID_LDO1,
326 	ATC2609A_ID_LDO2,
327 	ATC2609A_ID_LDO3,
328 	ATC2609A_ID_LDO4,
329 	ATC2609A_ID_LDO5,
330 	ATC2609A_ID_LDO6,
331 	ATC2609A_ID_LDO7,
332 	ATC2609A_ID_LDO8,
333 	ATC2609A_ID_LDO9,
334 	ATC2609A_ID_MAX,
335 };
336 
337 #define atc2609a_reg_desc_dcdc(num, en_bit) { \
338 	.name = "DCDC"#num, \
339 	.supply_name = "dcdc"#num, \
340 	.of_match = of_match_ptr("dcdc"#num), \
341 	.regulators_node = of_match_ptr("regulators"), \
342 	.id = ATC2609A_ID_DCDC##num, \
343 	.ops = &atc260x_dcdc_ops, \
344 	.type = REGULATOR_VOLTAGE, \
345 	.min_uV = 600000, \
346 	.uV_step = 6250, \
347 	.n_voltages = 256, \
348 	.vsel_reg = ATC2609A_PMU_DC##num##_CTL0, \
349 	.vsel_mask = GENMASK(15, 8), \
350 	.enable_reg = ATC2609A_PMU_DC_OSC, \
351 	.enable_mask = BIT(en_bit), \
352 	.enable_time = 800, \
353 	.owner = THIS_MODULE, \
354 }
355 
356 #define atc2609a_reg_desc_dcdc_range(num, en_bit) { \
357 	.name = "DCDC"#num, \
358 	.supply_name = "dcdc"#num, \
359 	.of_match = of_match_ptr("dcdc"#num), \
360 	.regulators_node = of_match_ptr("regulators"), \
361 	.id = ATC2609A_ID_DCDC##num, \
362 	.ops = &atc260x_dcdc_range_ops, \
363 	.type = REGULATOR_VOLTAGE, \
364 	.n_voltages = 233, \
365 	.linear_ranges = atc2609a_dcdc_voltage_ranges, \
366 	.n_linear_ranges = ARRAY_SIZE(atc2609a_dcdc_voltage_ranges), \
367 	.vsel_reg = ATC2609A_PMU_DC##num##_CTL0, \
368 	.vsel_mask = GENMASK(15, 8), \
369 	.enable_reg = ATC2609A_PMU_DC_OSC, \
370 	.enable_mask = BIT(en_bit), \
371 	.enable_time = 800, \
372 	.owner = THIS_MODULE, \
373 }
374 
375 #define atc2609a_reg_desc_ldo(num) { \
376 	.name = "LDO"#num, \
377 	.supply_name = "ldo"#num, \
378 	.of_match = of_match_ptr("ldo"#num), \
379 	.regulators_node = of_match_ptr("regulators"), \
380 	.id = ATC2609A_ID_LDO##num, \
381 	.ops = &atc260x_ldo_ops, \
382 	.type = REGULATOR_VOLTAGE, \
383 	.min_uV = 700000, \
384 	.uV_step = 100000, \
385 	.n_voltages = 16, \
386 	.vsel_reg = ATC2609A_PMU_LDO##num##_CTL0, \
387 	.vsel_mask = GENMASK(4, 1), \
388 	.enable_reg = ATC2609A_PMU_LDO##num##_CTL0, \
389 	.enable_mask = BIT(0), \
390 	.enable_time = 2000, \
391 	.owner = THIS_MODULE, \
392 }
393 
394 #define atc2609a_reg_desc_ldo_bypass(num) { \
395 	.name = "LDO"#num, \
396 	.supply_name = "ldo"#num, \
397 	.of_match = of_match_ptr("ldo"#num), \
398 	.regulators_node = of_match_ptr("regulators"), \
399 	.id = ATC2609A_ID_LDO##num, \
400 	.ops = &atc260x_ldo_bypass_ops, \
401 	.type = REGULATOR_VOLTAGE, \
402 	.min_uV = 2300000, \
403 	.uV_step = 100000, \
404 	.n_voltages = 12, \
405 	.vsel_reg = ATC2609A_PMU_LDO##num##_CTL0, \
406 	.vsel_mask = GENMASK(5, 2), \
407 	.enable_reg = ATC2609A_PMU_LDO##num##_CTL0, \
408 	.enable_mask = BIT(0), \
409 	.enable_time = 2000, \
410 	.bypass_reg = ATC2609A_PMU_LDO##num##_CTL0, \
411 	.bypass_mask = BIT(1), \
412 	.owner = THIS_MODULE, \
413 }
414 
415 #define atc2609a_reg_desc_ldo_range_pick(num, n_range, n_volt) { \
416 	.name = "LDO"#num, \
417 	.supply_name = "ldo"#num, \
418 	.of_match = of_match_ptr("ldo"#num), \
419 	.regulators_node = of_match_ptr("regulators"), \
420 	.id = ATC2609A_ID_LDO##num, \
421 	.ops = &atc260x_ldo_range_pick_ops, \
422 	.type = REGULATOR_VOLTAGE, \
423 	.linear_ranges = atc2609a_ldo_voltage_ranges##n_range, \
424 	.n_linear_ranges = ARRAY_SIZE(atc2609a_ldo_voltage_ranges##n_range), \
425 	.n_voltages = n_volt, \
426 	.vsel_reg = ATC2609A_PMU_LDO##num##_CTL0, \
427 	.vsel_mask = GENMASK(4, 1), \
428 	.vsel_range_reg = ATC2609A_PMU_LDO##num##_CTL0, \
429 	.vsel_range_mask = BIT(5), \
430 	.linear_range_selectors = atc260x_ldo_voltage_range_sel, \
431 	.enable_reg = ATC2609A_PMU_LDO##num##_CTL0, \
432 	.enable_mask = BIT(0), \
433 	.enable_time = 2000, \
434 	.owner = THIS_MODULE, \
435 }
436 
437 #define atc2609a_reg_desc_ldo_fixed(num) { \
438 	.name = "LDO"#num, \
439 	.supply_name = "ldo"#num, \
440 	.of_match = of_match_ptr("ldo"#num), \
441 	.regulators_node = of_match_ptr("regulators"), \
442 	.id = ATC2609A_ID_LDO##num, \
443 	.ops = &atc260x_ldo_fixed_ops, \
444 	.type = REGULATOR_VOLTAGE, \
445 	.min_uV = 2600000, \
446 	.uV_step = 100000, \
447 	.n_voltages = 8, \
448 	.vsel_reg = ATC2609A_PMU_LDO##num##_CTL, \
449 	.vsel_mask = GENMASK(15, 13), \
450 	.enable_time = 2000, \
451 	.owner = THIS_MODULE, \
452 }
453 
454 static const struct regulator_desc atc2609a_reg[] = {
455 	atc2609a_reg_desc_dcdc(0, 4),
456 	atc2609a_reg_desc_dcdc(1, 5),
457 	atc2609a_reg_desc_dcdc(2, 6),
458 	atc2609a_reg_desc_dcdc_range(3, 7),
459 	atc2609a_reg_desc_dcdc(4, 8),
460 	atc2609a_reg_desc_ldo_bypass(0),
461 	atc2609a_reg_desc_ldo_bypass(1),
462 	atc2609a_reg_desc_ldo_bypass(2),
463 	atc2609a_reg_desc_ldo_range_pick(3, 0, 29),
464 	atc2609a_reg_desc_ldo_range_pick(4, 0, 29),
465 	atc2609a_reg_desc_ldo(5),
466 	atc2609a_reg_desc_ldo_range_pick(6, 1, 28),
467 	atc2609a_reg_desc_ldo_range_pick(7, 0, 29),
468 	atc2609a_reg_desc_ldo_range_pick(8, 0, 29),
469 	atc2609a_reg_desc_ldo_fixed(9),
470 };
471 
472 static int atc260x_regulator_probe(struct platform_device *pdev)
473 {
474 	struct atc260x *atc260x = dev_get_drvdata(pdev->dev.parent);
475 	struct device *dev = atc260x->dev;
476 	struct atc260x_regulator_data *atc260x_data;
477 	struct regulator_config config = {};
478 	struct regulator_dev *atc260x_rdev;
479 	const struct regulator_desc *regulators;
480 	bool atc2603c_ver_b = false;
481 	int i, nregulators;
482 
483 	atc260x_data = devm_kzalloc(&pdev->dev, sizeof(*atc260x_data), GFP_KERNEL);
484 	if (!atc260x_data)
485 		return -ENOMEM;
486 
487 	atc260x_data->voltage_time_dcdc = 350;
488 	atc260x_data->voltage_time_ldo = 800;
489 
490 	switch (atc260x->ic_type) {
491 	case ATC2603C:
492 		regulators = atc2603c_reg;
493 		nregulators = ATC2603C_ID_MAX;
494 		atc2603c_ver_b = atc260x->ic_ver == ATC260X_B;
495 		break;
496 	case ATC2609A:
497 		atc260x_data->voltage_time_dcdc = 250;
498 		regulators = atc2609a_reg;
499 		nregulators = ATC2609A_ID_MAX;
500 		break;
501 	default:
502 		dev_err(dev, "unsupported ATC260X ID %d\n", atc260x->ic_type);
503 		return -EINVAL;
504 	}
505 
506 	config.dev = dev;
507 	config.regmap = atc260x->regmap;
508 	config.driver_data = atc260x_data;
509 
510 	/* Instantiate the regulators */
511 	for (i = 0; i < nregulators; i++) {
512 		if (atc2603c_ver_b && regulators[i].id == ATC2603C_ID_DCDC2)
513 			atc260x_rdev = devm_regulator_register(&pdev->dev,
514 							       &atc2603c_reg_dcdc2_ver_b,
515 							       &config);
516 		else
517 			atc260x_rdev = devm_regulator_register(&pdev->dev,
518 							       &regulators[i],
519 							       &config);
520 		if (IS_ERR(atc260x_rdev)) {
521 			dev_err(dev, "failed to register regulator: %d\n", i);
522 			return PTR_ERR(atc260x_rdev);
523 		}
524 	}
525 
526 	return 0;
527 }
528 
529 static struct platform_driver atc260x_regulator_driver = {
530 	.probe = atc260x_regulator_probe,
531 	.driver = {
532 		.name = "atc260x-regulator",
533 		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
534 	},
535 };
536 
537 module_platform_driver(atc260x_regulator_driver);
538 
539 MODULE_DESCRIPTION("Regulator driver for ATC260x PMICs");
540 MODULE_AUTHOR("Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>");
541 MODULE_AUTHOR("Cristian Ciocaltea <cristian.ciocaltea@gmail.com>");
542 MODULE_LICENSE("GPL");
543