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1// SPDX-License-Identifier: GPL-2.0-only
2// Copyright (C) 2019 ROHM Semiconductors
3// bd71828-regulator.c ROHM BD71828GW-DS1 regulator driver
4//
5
6#include <linux/delay.h>
7#include <linux/err.h>
8#include <linux/interrupt.h>
9#include <linux/kernel.h>
10#include <linux/mfd/rohm-bd71828.h>
11#include <linux/module.h>
12#include <linux/of.h>
13#include <linux/platform_device.h>
14#include <linux/regmap.h>
15#include <linux/regulator/driver.h>
16#include <linux/regulator/machine.h>
17#include <linux/regulator/of_regulator.h>
18
19struct reg_init {
20 unsigned int reg;
21 unsigned int mask;
22 unsigned int val;
23};
24struct bd71828_regulator_data {
25 struct regulator_desc desc;
26 const struct rohm_dvs_config dvs;
27 const struct reg_init *reg_inits;
28 int reg_init_amnt;
29};
30
31static const struct reg_init buck1_inits[] = {
32 /*
33 * DVS Buck voltages can be changed by register values or via GPIO.
34 * Use register accesses by default.
35 */
36 {
37 .reg = BD71828_REG_PS_CTRL_1,
38 .mask = BD71828_MASK_DVS_BUCK1_CTRL,
39 .val = BD71828_DVS_BUCK1_CTRL_I2C,
40 },
41};
42
43static const struct reg_init buck2_inits[] = {
44 {
45 .reg = BD71828_REG_PS_CTRL_1,
46 .mask = BD71828_MASK_DVS_BUCK2_CTRL,
47 .val = BD71828_DVS_BUCK2_CTRL_I2C,
48 },
49};
50
51static const struct reg_init buck6_inits[] = {
52 {
53 .reg = BD71828_REG_PS_CTRL_1,
54 .mask = BD71828_MASK_DVS_BUCK6_CTRL,
55 .val = BD71828_DVS_BUCK6_CTRL_I2C,
56 },
57};
58
59static const struct reg_init buck7_inits[] = {
60 {
61 .reg = BD71828_REG_PS_CTRL_1,
62 .mask = BD71828_MASK_DVS_BUCK7_CTRL,
63 .val = BD71828_DVS_BUCK7_CTRL_I2C,
64 },
65};
66
67static const struct linear_range bd71828_buck1267_volts[] = {
68 REGULATOR_LINEAR_RANGE(500000, 0x00, 0xef, 6250),
69 REGULATOR_LINEAR_RANGE(2000000, 0xf0, 0xff, 0),
70};
71
72static const struct linear_range bd71828_buck3_volts[] = {
73 REGULATOR_LINEAR_RANGE(1200000, 0x00, 0x0f, 50000),
74 REGULATOR_LINEAR_RANGE(2000000, 0x10, 0x1f, 0),
75};
76
77static const struct linear_range bd71828_buck4_volts[] = {
78 REGULATOR_LINEAR_RANGE(1000000, 0x00, 0x1f, 25000),
79 REGULATOR_LINEAR_RANGE(1800000, 0x20, 0x3f, 0),
80};
81
82static const struct linear_range bd71828_buck5_volts[] = {
83 REGULATOR_LINEAR_RANGE(2500000, 0x00, 0x0f, 50000),
84 REGULATOR_LINEAR_RANGE(3300000, 0x10, 0x1f, 0),
85};
86
87static const struct linear_range bd71828_ldo_volts[] = {
88 REGULATOR_LINEAR_RANGE(800000, 0x00, 0x31, 50000),
89 REGULATOR_LINEAR_RANGE(3300000, 0x32, 0x3f, 0),
90};
91
92static const unsigned int bd71828_ramp_delay[] = { 2500, 5000, 10000, 20000 };
93
94static int buck_set_hw_dvs_levels(struct device_node *np,
95 const struct regulator_desc *desc,
96 struct regulator_config *cfg)
97{
98 struct bd71828_regulator_data *data;
99
100 data = container_of(desc, struct bd71828_regulator_data, desc);
101
102 return rohm_regulator_set_dvs_levels(&data->dvs, np, desc, cfg->regmap);
103}
104
105static int ldo6_parse_dt(struct device_node *np,
106 const struct regulator_desc *desc,
107 struct regulator_config *cfg)
108{
109 int ret, i;
110 uint32_t uv = 0;
111 unsigned int en;
112 struct regmap *regmap = cfg->regmap;
113 static const char * const props[] = { "rohm,dvs-run-voltage",
114 "rohm,dvs-idle-voltage",
115 "rohm,dvs-suspend-voltage",
116 "rohm,dvs-lpsr-voltage" };
117 unsigned int mask[] = { BD71828_MASK_RUN_EN, BD71828_MASK_IDLE_EN,
118 BD71828_MASK_SUSP_EN, BD71828_MASK_LPSR_EN };
119
120 for (i = 0; i < ARRAY_SIZE(props); i++) {
121 ret = of_property_read_u32(np, props[i], &uv);
122 if (ret) {
123 if (ret != -EINVAL)
124 return ret;
125 continue;
126 }
127 if (uv)
128 en = 0xffffffff;
129 else
130 en = 0;
131
132 ret = regmap_update_bits(regmap, desc->enable_reg, mask[i], en);
133 if (ret)
134 return ret;
135 }
136 return 0;
137}
138
139static const struct regulator_ops bd71828_buck_ops = {
140 .enable = regulator_enable_regmap,
141 .disable = regulator_disable_regmap,
142 .is_enabled = regulator_is_enabled_regmap,
143 .list_voltage = regulator_list_voltage_linear_range,
144 .set_voltage_sel = regulator_set_voltage_sel_regmap,
145 .get_voltage_sel = regulator_get_voltage_sel_regmap,
146};
147
148static const struct regulator_ops bd71828_dvs_buck_ops = {
149 .enable = regulator_enable_regmap,
150 .disable = regulator_disable_regmap,
151 .is_enabled = regulator_is_enabled_regmap,
152 .list_voltage = regulator_list_voltage_linear_range,
153 .set_voltage_sel = regulator_set_voltage_sel_regmap,
154 .get_voltage_sel = regulator_get_voltage_sel_regmap,
155 .set_voltage_time_sel = regulator_set_voltage_time_sel,
156 .set_ramp_delay = regulator_set_ramp_delay_regmap,
157};
158
159static const struct regulator_ops bd71828_ldo_ops = {
160 .enable = regulator_enable_regmap,
161 .disable = regulator_disable_regmap,
162 .is_enabled = regulator_is_enabled_regmap,
163 .list_voltage = regulator_list_voltage_linear_range,
164 .set_voltage_sel = regulator_set_voltage_sel_regmap,
165 .get_voltage_sel = regulator_get_voltage_sel_regmap,
166};
167
168static const struct regulator_ops bd71828_ldo6_ops = {
169 .enable = regulator_enable_regmap,
170 .disable = regulator_disable_regmap,
171 .is_enabled = regulator_is_enabled_regmap,
172};
173
174static const struct bd71828_regulator_data bd71828_rdata[] = {
175 {
176 .desc = {
177 .name = "buck1",
178 .of_match = of_match_ptr("BUCK1"),
179 .regulators_node = of_match_ptr("regulators"),
180 .id = BD71828_BUCK1,
181 .ops = &bd71828_dvs_buck_ops,
182 .type = REGULATOR_VOLTAGE,
183 .linear_ranges = bd71828_buck1267_volts,
184 .n_linear_ranges = ARRAY_SIZE(bd71828_buck1267_volts),
185 .n_voltages = BD71828_BUCK1267_VOLTS,
186 .enable_reg = BD71828_REG_BUCK1_EN,
187 .enable_mask = BD71828_MASK_RUN_EN,
188 .vsel_reg = BD71828_REG_BUCK1_VOLT,
189 .vsel_mask = BD71828_MASK_BUCK1267_VOLT,
190 .ramp_delay_table = bd71828_ramp_delay,
191 .n_ramp_values = ARRAY_SIZE(bd71828_ramp_delay),
192 .ramp_reg = BD71828_REG_BUCK1_MODE,
193 .ramp_mask = BD71828_MASK_RAMP_DELAY,
194 .owner = THIS_MODULE,
195 .of_parse_cb = buck_set_hw_dvs_levels,
196 },
197 .dvs = {
198 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
199 ROHM_DVS_LEVEL_SUSPEND |
200 ROHM_DVS_LEVEL_LPSR,
201 .run_reg = BD71828_REG_BUCK1_VOLT,
202 .run_mask = BD71828_MASK_BUCK1267_VOLT,
203 .idle_reg = BD71828_REG_BUCK1_IDLE_VOLT,
204 .idle_mask = BD71828_MASK_BUCK1267_VOLT,
205 .idle_on_mask = BD71828_MASK_IDLE_EN,
206 .suspend_reg = BD71828_REG_BUCK1_SUSP_VOLT,
207 .suspend_mask = BD71828_MASK_BUCK1267_VOLT,
208 .suspend_on_mask = BD71828_MASK_SUSP_EN,
209 /*
210 * LPSR voltage is same as SUSPEND voltage. Allow
211 * only enabling/disabling regulator for LPSR state
212 */
213 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
214 },
215 .reg_inits = buck1_inits,
216 .reg_init_amnt = ARRAY_SIZE(buck1_inits),
217 },
218 {
219 .desc = {
220 .name = "buck2",
221 .of_match = of_match_ptr("BUCK2"),
222 .regulators_node = of_match_ptr("regulators"),
223 .id = BD71828_BUCK2,
224 .ops = &bd71828_dvs_buck_ops,
225 .type = REGULATOR_VOLTAGE,
226 .linear_ranges = bd71828_buck1267_volts,
227 .n_linear_ranges = ARRAY_SIZE(bd71828_buck1267_volts),
228 .n_voltages = BD71828_BUCK1267_VOLTS,
229 .enable_reg = BD71828_REG_BUCK2_EN,
230 .enable_mask = BD71828_MASK_RUN_EN,
231 .vsel_reg = BD71828_REG_BUCK2_VOLT,
232 .vsel_mask = BD71828_MASK_BUCK1267_VOLT,
233 .ramp_delay_table = bd71828_ramp_delay,
234 .n_ramp_values = ARRAY_SIZE(bd71828_ramp_delay),
235 .ramp_reg = BD71828_REG_BUCK2_MODE,
236 .ramp_mask = BD71828_MASK_RAMP_DELAY,
237 .owner = THIS_MODULE,
238 .of_parse_cb = buck_set_hw_dvs_levels,
239 },
240 .dvs = {
241 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
242 ROHM_DVS_LEVEL_SUSPEND |
243 ROHM_DVS_LEVEL_LPSR,
244 .run_reg = BD71828_REG_BUCK2_VOLT,
245 .run_mask = BD71828_MASK_BUCK1267_VOLT,
246 .idle_reg = BD71828_REG_BUCK2_IDLE_VOLT,
247 .idle_mask = BD71828_MASK_BUCK1267_VOLT,
248 .idle_on_mask = BD71828_MASK_IDLE_EN,
249 .suspend_reg = BD71828_REG_BUCK2_SUSP_VOLT,
250 .suspend_mask = BD71828_MASK_BUCK1267_VOLT,
251 .suspend_on_mask = BD71828_MASK_SUSP_EN,
252 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
253 .lpsr_reg = BD71828_REG_BUCK2_SUSP_VOLT,
254 .lpsr_mask = BD71828_MASK_BUCK1267_VOLT,
255 },
256 .reg_inits = buck2_inits,
257 .reg_init_amnt = ARRAY_SIZE(buck2_inits),
258 },
259 {
260 .desc = {
261 .name = "buck3",
262 .of_match = of_match_ptr("BUCK3"),
263 .regulators_node = of_match_ptr("regulators"),
264 .id = BD71828_BUCK3,
265 .ops = &bd71828_buck_ops,
266 .type = REGULATOR_VOLTAGE,
267 .linear_ranges = bd71828_buck3_volts,
268 .n_linear_ranges = ARRAY_SIZE(bd71828_buck3_volts),
269 .n_voltages = BD71828_BUCK3_VOLTS,
270 .enable_reg = BD71828_REG_BUCK3_EN,
271 .enable_mask = BD71828_MASK_RUN_EN,
272 .vsel_reg = BD71828_REG_BUCK3_VOLT,
273 .vsel_mask = BD71828_MASK_BUCK3_VOLT,
274 .owner = THIS_MODULE,
275 .of_parse_cb = buck_set_hw_dvs_levels,
276 },
277 .dvs = {
278 /*
279 * BUCK3 only supports single voltage for all states.
280 * voltage can be individually enabled for each state
281 * though => allow setting all states to support
282 * enabling power rail on different states.
283 */
284 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
285 ROHM_DVS_LEVEL_SUSPEND |
286 ROHM_DVS_LEVEL_LPSR,
287 .run_reg = BD71828_REG_BUCK3_VOLT,
288 .run_mask = BD71828_MASK_BUCK3_VOLT,
289 .idle_on_mask = BD71828_MASK_IDLE_EN,
290 .suspend_on_mask = BD71828_MASK_SUSP_EN,
291 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
292 },
293 },
294 {
295 .desc = {
296 .name = "buck4",
297 .of_match = of_match_ptr("BUCK4"),
298 .regulators_node = of_match_ptr("regulators"),
299 .id = BD71828_BUCK4,
300 .ops = &bd71828_buck_ops,
301 .type = REGULATOR_VOLTAGE,
302 .linear_ranges = bd71828_buck4_volts,
303 .n_linear_ranges = ARRAY_SIZE(bd71828_buck4_volts),
304 .n_voltages = BD71828_BUCK4_VOLTS,
305 .enable_reg = BD71828_REG_BUCK4_EN,
306 .enable_mask = BD71828_MASK_RUN_EN,
307 .vsel_reg = BD71828_REG_BUCK4_VOLT,
308 .vsel_mask = BD71828_MASK_BUCK4_VOLT,
309 .owner = THIS_MODULE,
310 .of_parse_cb = buck_set_hw_dvs_levels,
311 },
312 .dvs = {
313 /*
314 * BUCK4 only supports single voltage for all states.
315 * voltage can be individually enabled for each state
316 * though => allow setting all states to support
317 * enabling power rail on different states.
318 */
319 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
320 ROHM_DVS_LEVEL_SUSPEND |
321 ROHM_DVS_LEVEL_LPSR,
322 .run_reg = BD71828_REG_BUCK4_VOLT,
323 .run_mask = BD71828_MASK_BUCK4_VOLT,
324 .idle_on_mask = BD71828_MASK_IDLE_EN,
325 .suspend_on_mask = BD71828_MASK_SUSP_EN,
326 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
327 },
328 },
329 {
330 .desc = {
331 .name = "buck5",
332 .of_match = of_match_ptr("BUCK5"),
333 .regulators_node = of_match_ptr("regulators"),
334 .id = BD71828_BUCK5,
335 .ops = &bd71828_buck_ops,
336 .type = REGULATOR_VOLTAGE,
337 .linear_ranges = bd71828_buck5_volts,
338 .n_linear_ranges = ARRAY_SIZE(bd71828_buck5_volts),
339 .n_voltages = BD71828_BUCK5_VOLTS,
340 .enable_reg = BD71828_REG_BUCK5_EN,
341 .enable_mask = BD71828_MASK_RUN_EN,
342 .vsel_reg = BD71828_REG_BUCK5_VOLT,
343 .vsel_mask = BD71828_MASK_BUCK5_VOLT,
344 .owner = THIS_MODULE,
345 .of_parse_cb = buck_set_hw_dvs_levels,
346 },
347 .dvs = {
348 /*
349 * BUCK5 only supports single voltage for all states.
350 * voltage can be individually enabled for each state
351 * though => allow setting all states to support
352 * enabling power rail on different states.
353 */
354 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
355 ROHM_DVS_LEVEL_SUSPEND |
356 ROHM_DVS_LEVEL_LPSR,
357 .run_reg = BD71828_REG_BUCK5_VOLT,
358 .run_mask = BD71828_MASK_BUCK5_VOLT,
359 .idle_on_mask = BD71828_MASK_IDLE_EN,
360 .suspend_on_mask = BD71828_MASK_SUSP_EN,
361 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
362 },
363 },
364 {
365 .desc = {
366 .name = "buck6",
367 .of_match = of_match_ptr("BUCK6"),
368 .regulators_node = of_match_ptr("regulators"),
369 .id = BD71828_BUCK6,
370 .ops = &bd71828_dvs_buck_ops,
371 .type = REGULATOR_VOLTAGE,
372 .linear_ranges = bd71828_buck1267_volts,
373 .n_linear_ranges = ARRAY_SIZE(bd71828_buck1267_volts),
374 .n_voltages = BD71828_BUCK1267_VOLTS,
375 .enable_reg = BD71828_REG_BUCK6_EN,
376 .enable_mask = BD71828_MASK_RUN_EN,
377 .vsel_reg = BD71828_REG_BUCK6_VOLT,
378 .vsel_mask = BD71828_MASK_BUCK1267_VOLT,
379 .ramp_delay_table = bd71828_ramp_delay,
380 .n_ramp_values = ARRAY_SIZE(bd71828_ramp_delay),
381 .ramp_reg = BD71828_REG_BUCK6_MODE,
382 .ramp_mask = BD71828_MASK_RAMP_DELAY,
383 .owner = THIS_MODULE,
384 .of_parse_cb = buck_set_hw_dvs_levels,
385 },
386 .dvs = {
387 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
388 ROHM_DVS_LEVEL_SUSPEND |
389 ROHM_DVS_LEVEL_LPSR,
390 .run_reg = BD71828_REG_BUCK6_VOLT,
391 .run_mask = BD71828_MASK_BUCK1267_VOLT,
392 .idle_reg = BD71828_REG_BUCK6_IDLE_VOLT,
393 .idle_mask = BD71828_MASK_BUCK1267_VOLT,
394 .idle_on_mask = BD71828_MASK_IDLE_EN,
395 .suspend_reg = BD71828_REG_BUCK6_SUSP_VOLT,
396 .suspend_mask = BD71828_MASK_BUCK1267_VOLT,
397 .suspend_on_mask = BD71828_MASK_SUSP_EN,
398 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
399 .lpsr_reg = BD71828_REG_BUCK6_SUSP_VOLT,
400 .lpsr_mask = BD71828_MASK_BUCK1267_VOLT,
401 },
402 .reg_inits = buck6_inits,
403 .reg_init_amnt = ARRAY_SIZE(buck6_inits),
404 },
405 {
406 .desc = {
407 .name = "buck7",
408 .of_match = of_match_ptr("BUCK7"),
409 .regulators_node = of_match_ptr("regulators"),
410 .id = BD71828_BUCK7,
411 .ops = &bd71828_dvs_buck_ops,
412 .type = REGULATOR_VOLTAGE,
413 .linear_ranges = bd71828_buck1267_volts,
414 .n_linear_ranges = ARRAY_SIZE(bd71828_buck1267_volts),
415 .n_voltages = BD71828_BUCK1267_VOLTS,
416 .enable_reg = BD71828_REG_BUCK7_EN,
417 .enable_mask = BD71828_MASK_RUN_EN,
418 .vsel_reg = BD71828_REG_BUCK7_VOLT,
419 .vsel_mask = BD71828_MASK_BUCK1267_VOLT,
420 .ramp_delay_table = bd71828_ramp_delay,
421 .n_ramp_values = ARRAY_SIZE(bd71828_ramp_delay),
422 .ramp_reg = BD71828_REG_BUCK7_MODE,
423 .ramp_mask = BD71828_MASK_RAMP_DELAY,
424 .owner = THIS_MODULE,
425 .of_parse_cb = buck_set_hw_dvs_levels,
426 },
427 .dvs = {
428 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
429 ROHM_DVS_LEVEL_SUSPEND |
430 ROHM_DVS_LEVEL_LPSR,
431 .run_reg = BD71828_REG_BUCK7_VOLT,
432 .run_mask = BD71828_MASK_BUCK1267_VOLT,
433 .idle_reg = BD71828_REG_BUCK7_IDLE_VOLT,
434 .idle_mask = BD71828_MASK_BUCK1267_VOLT,
435 .idle_on_mask = BD71828_MASK_IDLE_EN,
436 .suspend_reg = BD71828_REG_BUCK7_SUSP_VOLT,
437 .suspend_mask = BD71828_MASK_BUCK1267_VOLT,
438 .suspend_on_mask = BD71828_MASK_SUSP_EN,
439 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
440 .lpsr_reg = BD71828_REG_BUCK7_SUSP_VOLT,
441 .lpsr_mask = BD71828_MASK_BUCK1267_VOLT,
442 },
443 .reg_inits = buck7_inits,
444 .reg_init_amnt = ARRAY_SIZE(buck7_inits),
445 },
446 {
447 .desc = {
448 .name = "ldo1",
449 .of_match = of_match_ptr("LDO1"),
450 .regulators_node = of_match_ptr("regulators"),
451 .id = BD71828_LDO1,
452 .ops = &bd71828_ldo_ops,
453 .type = REGULATOR_VOLTAGE,
454 .linear_ranges = bd71828_ldo_volts,
455 .n_linear_ranges = ARRAY_SIZE(bd71828_ldo_volts),
456 .n_voltages = BD71828_LDO_VOLTS,
457 .enable_reg = BD71828_REG_LDO1_EN,
458 .enable_mask = BD71828_MASK_RUN_EN,
459 .vsel_reg = BD71828_REG_LDO1_VOLT,
460 .vsel_mask = BD71828_MASK_LDO_VOLT,
461 .owner = THIS_MODULE,
462 .of_parse_cb = buck_set_hw_dvs_levels,
463 },
464 .dvs = {
465 /*
466 * LDO1 only supports single voltage for all states.
467 * voltage can be individually enabled for each state
468 * though => allow setting all states to support
469 * enabling power rail on different states.
470 */
471 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
472 ROHM_DVS_LEVEL_SUSPEND |
473 ROHM_DVS_LEVEL_LPSR,
474 .run_reg = BD71828_REG_LDO1_VOLT,
475 .run_mask = BD71828_MASK_LDO_VOLT,
476 .idle_on_mask = BD71828_MASK_IDLE_EN,
477 .suspend_on_mask = BD71828_MASK_SUSP_EN,
478 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
479 },
480 }, {
481 .desc = {
482 .name = "ldo2",
483 .of_match = of_match_ptr("LDO2"),
484 .regulators_node = of_match_ptr("regulators"),
485 .id = BD71828_LDO2,
486 .ops = &bd71828_ldo_ops,
487 .type = REGULATOR_VOLTAGE,
488 .linear_ranges = bd71828_ldo_volts,
489 .n_linear_ranges = ARRAY_SIZE(bd71828_ldo_volts),
490 .n_voltages = BD71828_LDO_VOLTS,
491 .enable_reg = BD71828_REG_LDO2_EN,
492 .enable_mask = BD71828_MASK_RUN_EN,
493 .vsel_reg = BD71828_REG_LDO2_VOLT,
494 .vsel_mask = BD71828_MASK_LDO_VOLT,
495 .owner = THIS_MODULE,
496 .of_parse_cb = buck_set_hw_dvs_levels,
497 },
498 .dvs = {
499 /*
500 * LDO2 only supports single voltage for all states.
501 * voltage can be individually enabled for each state
502 * though => allow setting all states to support
503 * enabling power rail on different states.
504 */
505 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
506 ROHM_DVS_LEVEL_SUSPEND |
507 ROHM_DVS_LEVEL_LPSR,
508 .run_reg = BD71828_REG_LDO2_VOLT,
509 .run_mask = BD71828_MASK_LDO_VOLT,
510 .idle_on_mask = BD71828_MASK_IDLE_EN,
511 .suspend_on_mask = BD71828_MASK_SUSP_EN,
512 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
513 },
514 }, {
515 .desc = {
516 .name = "ldo3",
517 .of_match = of_match_ptr("LDO3"),
518 .regulators_node = of_match_ptr("regulators"),
519 .id = BD71828_LDO3,
520 .ops = &bd71828_ldo_ops,
521 .type = REGULATOR_VOLTAGE,
522 .linear_ranges = bd71828_ldo_volts,
523 .n_linear_ranges = ARRAY_SIZE(bd71828_ldo_volts),
524 .n_voltages = BD71828_LDO_VOLTS,
525 .enable_reg = BD71828_REG_LDO3_EN,
526 .enable_mask = BD71828_MASK_RUN_EN,
527 .vsel_reg = BD71828_REG_LDO3_VOLT,
528 .vsel_mask = BD71828_MASK_LDO_VOLT,
529 .owner = THIS_MODULE,
530 .of_parse_cb = buck_set_hw_dvs_levels,
531 },
532 .dvs = {
533 /*
534 * LDO3 only supports single voltage for all states.
535 * voltage can be individually enabled for each state
536 * though => allow setting all states to support
537 * enabling power rail on different states.
538 */
539 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
540 ROHM_DVS_LEVEL_SUSPEND |
541 ROHM_DVS_LEVEL_LPSR,
542 .run_reg = BD71828_REG_LDO3_VOLT,
543 .run_mask = BD71828_MASK_LDO_VOLT,
544 .idle_on_mask = BD71828_MASK_IDLE_EN,
545 .suspend_on_mask = BD71828_MASK_SUSP_EN,
546 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
547 },
548
549 }, {
550 .desc = {
551 .name = "ldo4",
552 .of_match = of_match_ptr("LDO4"),
553 .regulators_node = of_match_ptr("regulators"),
554 .id = BD71828_LDO4,
555 .ops = &bd71828_ldo_ops,
556 .type = REGULATOR_VOLTAGE,
557 .linear_ranges = bd71828_ldo_volts,
558 .n_linear_ranges = ARRAY_SIZE(bd71828_ldo_volts),
559 .n_voltages = BD71828_LDO_VOLTS,
560 .enable_reg = BD71828_REG_LDO4_EN,
561 .enable_mask = BD71828_MASK_RUN_EN,
562 .vsel_reg = BD71828_REG_LDO4_VOLT,
563 .vsel_mask = BD71828_MASK_LDO_VOLT,
564 .owner = THIS_MODULE,
565 .of_parse_cb = buck_set_hw_dvs_levels,
566 },
567 .dvs = {
568 /*
569 * LDO1 only supports single voltage for all states.
570 * voltage can be individually enabled for each state
571 * though => allow setting all states to support
572 * enabling power rail on different states.
573 */
574 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
575 ROHM_DVS_LEVEL_SUSPEND |
576 ROHM_DVS_LEVEL_LPSR,
577 .run_reg = BD71828_REG_LDO4_VOLT,
578 .run_mask = BD71828_MASK_LDO_VOLT,
579 .idle_on_mask = BD71828_MASK_IDLE_EN,
580 .suspend_on_mask = BD71828_MASK_SUSP_EN,
581 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
582 },
583 }, {
584 .desc = {
585 .name = "ldo5",
586 .of_match = of_match_ptr("LDO5"),
587 .regulators_node = of_match_ptr("regulators"),
588 .id = BD71828_LDO5,
589 .ops = &bd71828_ldo_ops,
590 .type = REGULATOR_VOLTAGE,
591 .linear_ranges = bd71828_ldo_volts,
592 .n_linear_ranges = ARRAY_SIZE(bd71828_ldo_volts),
593 .n_voltages = BD71828_LDO_VOLTS,
594 .enable_reg = BD71828_REG_LDO5_EN,
595 .enable_mask = BD71828_MASK_RUN_EN,
596 .vsel_reg = BD71828_REG_LDO5_VOLT,
597 .vsel_mask = BD71828_MASK_LDO_VOLT,
598 .of_parse_cb = buck_set_hw_dvs_levels,
599 .owner = THIS_MODULE,
600 },
601 /*
602 * LDO5 is special. It can choose vsel settings to be configured
603 * from 2 different registers (by GPIO).
604 *
605 * This driver supports only configuration where
606 * BD71828_REG_LDO5_VOLT_L is used.
607 */
608 .dvs = {
609 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
610 ROHM_DVS_LEVEL_SUSPEND |
611 ROHM_DVS_LEVEL_LPSR,
612 .run_reg = BD71828_REG_LDO5_VOLT,
613 .run_mask = BD71828_MASK_LDO_VOLT,
614 .idle_on_mask = BD71828_MASK_IDLE_EN,
615 .suspend_on_mask = BD71828_MASK_SUSP_EN,
616 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
617 },
618
619 }, {
620 .desc = {
621 .name = "ldo6",
622 .of_match = of_match_ptr("LDO6"),
623 .regulators_node = of_match_ptr("regulators"),
624 .id = BD71828_LDO6,
625 .ops = &bd71828_ldo6_ops,
626 .type = REGULATOR_VOLTAGE,
627 .fixed_uV = BD71828_LDO_6_VOLTAGE,
628 .n_voltages = 1,
629 .enable_reg = BD71828_REG_LDO6_EN,
630 .enable_mask = BD71828_MASK_RUN_EN,
631 .owner = THIS_MODULE,
632 /*
633 * LDO6 only supports enable/disable for all states.
634 * Voltage for LDO6 is fixed.
635 */
636 .of_parse_cb = ldo6_parse_dt,
637 },
638 }, {
639 .desc = {
640 /* SNVS LDO in data-sheet */
641 .name = "ldo7",
642 .of_match = of_match_ptr("LDO7"),
643 .regulators_node = of_match_ptr("regulators"),
644 .id = BD71828_LDO_SNVS,
645 .ops = &bd71828_ldo_ops,
646 .type = REGULATOR_VOLTAGE,
647 .linear_ranges = bd71828_ldo_volts,
648 .n_linear_ranges = ARRAY_SIZE(bd71828_ldo_volts),
649 .n_voltages = BD71828_LDO_VOLTS,
650 .enable_reg = BD71828_REG_LDO7_EN,
651 .enable_mask = BD71828_MASK_RUN_EN,
652 .vsel_reg = BD71828_REG_LDO7_VOLT,
653 .vsel_mask = BD71828_MASK_LDO_VOLT,
654 .owner = THIS_MODULE,
655 .of_parse_cb = buck_set_hw_dvs_levels,
656 },
657 .dvs = {
658 /*
659 * LDO7 only supports single voltage for all states.
660 * voltage can be individually enabled for each state
661 * though => allow setting all states to support
662 * enabling power rail on different states.
663 */
664 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
665 ROHM_DVS_LEVEL_SUSPEND |
666 ROHM_DVS_LEVEL_LPSR,
667 .run_reg = BD71828_REG_LDO7_VOLT,
668 .idle_reg = BD71828_REG_LDO7_VOLT,
669 .suspend_reg = BD71828_REG_LDO7_VOLT,
670 .lpsr_reg = BD71828_REG_LDO7_VOLT,
671 .run_mask = BD71828_MASK_LDO_VOLT,
672 .idle_on_mask = BD71828_MASK_IDLE_EN,
673 .suspend_on_mask = BD71828_MASK_SUSP_EN,
674 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
675 },
676
677 },
678};
679
680static int bd71828_probe(struct platform_device *pdev)
681{
682 int i, j, ret;
683 struct regulator_config config = {
684 .dev = pdev->dev.parent,
685 };
686
687 config.regmap = dev_get_regmap(pdev->dev.parent, NULL);
688 if (!config.regmap)
689 return -ENODEV;
690
691 for (i = 0; i < ARRAY_SIZE(bd71828_rdata); i++) {
692 struct regulator_dev *rdev;
693 const struct bd71828_regulator_data *rd;
694
695 rd = &bd71828_rdata[i];
696 rdev = devm_regulator_register(&pdev->dev,
697 &rd->desc, &config);
698 if (IS_ERR(rdev))
699 return dev_err_probe(&pdev->dev, PTR_ERR(rdev),
700 "failed to register %s regulator\n",
701 rd->desc.name);
702
703 for (j = 0; j < rd->reg_init_amnt; j++) {
704 ret = regmap_update_bits(config.regmap,
705 rd->reg_inits[j].reg,
706 rd->reg_inits[j].mask,
707 rd->reg_inits[j].val);
708 if (ret)
709 return dev_err_probe(&pdev->dev, ret,
710 "regulator %s init failed\n",
711 rd->desc.name);
712 }
713 }
714 return 0;
715}
716
717static struct platform_driver bd71828_regulator = {
718 .driver = {
719 .name = "bd71828-pmic",
720 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
721 },
722 .probe = bd71828_probe,
723};
724
725module_platform_driver(bd71828_regulator);
726
727MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>");
728MODULE_DESCRIPTION("BD71828 voltage regulator driver");
729MODULE_LICENSE("GPL");
730MODULE_ALIAS("platform:bd71828-pmic");