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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");
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/gpio.h>
9#include <linux/interrupt.h>
10#include <linux/kernel.h>
11#include <linux/mfd/rohm-bd71828.h>
12#include <linux/module.h>
13#include <linux/of.h>
14#include <linux/platform_device.h>
15#include <linux/regmap.h>
16#include <linux/regulator/driver.h>
17#include <linux/regulator/machine.h>
18#include <linux/regulator/of_regulator.h>
19
20struct reg_init {
21 unsigned int reg;
22 unsigned int mask;
23 unsigned int val;
24};
25struct bd71828_regulator_data {
26 struct regulator_desc desc;
27 const struct rohm_dvs_config dvs;
28 const struct reg_init *reg_inits;
29 int reg_init_amnt;
30};
31
32static const struct reg_init buck1_inits[] = {
33 /*
34 * DVS Buck voltages can be changed by register values or via GPIO.
35 * Use register accesses by default.
36 */
37 {
38 .reg = BD71828_REG_PS_CTRL_1,
39 .mask = BD71828_MASK_DVS_BUCK1_CTRL,
40 .val = BD71828_DVS_BUCK1_CTRL_I2C,
41 },
42};
43
44static const struct reg_init buck2_inits[] = {
45 {
46 .reg = BD71828_REG_PS_CTRL_1,
47 .mask = BD71828_MASK_DVS_BUCK2_CTRL,
48 .val = BD71828_DVS_BUCK2_CTRL_I2C,
49 },
50};
51
52static const struct reg_init buck6_inits[] = {
53 {
54 .reg = BD71828_REG_PS_CTRL_1,
55 .mask = BD71828_MASK_DVS_BUCK6_CTRL,
56 .val = BD71828_DVS_BUCK6_CTRL_I2C,
57 },
58};
59
60static const struct reg_init buck7_inits[] = {
61 {
62 .reg = BD71828_REG_PS_CTRL_1,
63 .mask = BD71828_MASK_DVS_BUCK7_CTRL,
64 .val = BD71828_DVS_BUCK7_CTRL_I2C,
65 },
66};
67
68static const struct linear_range bd71828_buck1267_volts[] = {
69 REGULATOR_LINEAR_RANGE(500000, 0x00, 0xef, 6250),
70 REGULATOR_LINEAR_RANGE(2000000, 0xf0, 0xff, 0),
71};
72
73static const struct linear_range bd71828_buck3_volts[] = {
74 REGULATOR_LINEAR_RANGE(1200000, 0x00, 0x0f, 50000),
75 REGULATOR_LINEAR_RANGE(2000000, 0x10, 0x1f, 0),
76};
77
78static const struct linear_range bd71828_buck4_volts[] = {
79 REGULATOR_LINEAR_RANGE(1000000, 0x00, 0x1f, 25000),
80 REGULATOR_LINEAR_RANGE(1800000, 0x20, 0x3f, 0),
81};
82
83static const struct linear_range bd71828_buck5_volts[] = {
84 REGULATOR_LINEAR_RANGE(2500000, 0x00, 0x0f, 50000),
85 REGULATOR_LINEAR_RANGE(3300000, 0x10, 0x1f, 0),
86};
87
88static const struct linear_range bd71828_ldo_volts[] = {
89 REGULATOR_LINEAR_RANGE(800000, 0x00, 0x31, 50000),
90 REGULATOR_LINEAR_RANGE(3300000, 0x32, 0x3f, 0),
91};
92
93static int bd71828_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
94{
95 unsigned int val;
96
97 switch (ramp_delay) {
98 case 1 ... 2500:
99 val = 0;
100 break;
101 case 2501 ... 5000:
102 val = 1;
103 break;
104 case 5001 ... 10000:
105 val = 2;
106 break;
107 case 10001 ... 20000:
108 val = 3;
109 break;
110 default:
111 val = 3;
112 dev_err(&rdev->dev,
113 "ramp_delay: %d not supported, setting 20mV/uS",
114 ramp_delay);
115 }
116
117 /*
118 * On BD71828 the ramp delay level control reg is at offset +2 to
119 * enable reg
120 */
121 return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg + 2,
122 BD71828_MASK_RAMP_DELAY,
123 val << (ffs(BD71828_MASK_RAMP_DELAY) - 1));
124}
125
126static int buck_set_hw_dvs_levels(struct device_node *np,
127 const struct regulator_desc *desc,
128 struct regulator_config *cfg)
129{
130 struct bd71828_regulator_data *data;
131
132 data = container_of(desc, struct bd71828_regulator_data, desc);
133
134 return rohm_regulator_set_dvs_levels(&data->dvs, np, desc, cfg->regmap);
135}
136
137static int ldo6_parse_dt(struct device_node *np,
138 const struct regulator_desc *desc,
139 struct regulator_config *cfg)
140{
141 int ret, i;
142 uint32_t uv = 0;
143 unsigned int en;
144 struct regmap *regmap = cfg->regmap;
145 static const char * const props[] = { "rohm,dvs-run-voltage",
146 "rohm,dvs-idle-voltage",
147 "rohm,dvs-suspend-voltage",
148 "rohm,dvs-lpsr-voltage" };
149 unsigned int mask[] = { BD71828_MASK_RUN_EN, BD71828_MASK_IDLE_EN,
150 BD71828_MASK_SUSP_EN, BD71828_MASK_LPSR_EN };
151
152 for (i = 0; i < ARRAY_SIZE(props); i++) {
153 ret = of_property_read_u32(np, props[i], &uv);
154 if (ret) {
155 if (ret != -EINVAL)
156 return ret;
157 continue;
158 }
159 if (uv)
160 en = 0xffffffff;
161 else
162 en = 0;
163
164 ret = regmap_update_bits(regmap, desc->enable_reg, mask[i], en);
165 if (ret)
166 return ret;
167 }
168 return 0;
169}
170
171static const struct regulator_ops bd71828_buck_ops = {
172 .enable = regulator_enable_regmap,
173 .disable = regulator_disable_regmap,
174 .is_enabled = regulator_is_enabled_regmap,
175 .list_voltage = regulator_list_voltage_linear_range,
176 .set_voltage_sel = regulator_set_voltage_sel_regmap,
177 .get_voltage_sel = regulator_get_voltage_sel_regmap,
178};
179
180static const struct regulator_ops bd71828_dvs_buck_ops = {
181 .enable = regulator_enable_regmap,
182 .disable = regulator_disable_regmap,
183 .is_enabled = regulator_is_enabled_regmap,
184 .list_voltage = regulator_list_voltage_linear_range,
185 .set_voltage_sel = regulator_set_voltage_sel_regmap,
186 .get_voltage_sel = regulator_get_voltage_sel_regmap,
187 .set_voltage_time_sel = regulator_set_voltage_time_sel,
188 .set_ramp_delay = bd71828_set_ramp_delay,
189};
190
191static const struct regulator_ops bd71828_ldo_ops = {
192 .enable = regulator_enable_regmap,
193 .disable = regulator_disable_regmap,
194 .is_enabled = regulator_is_enabled_regmap,
195 .list_voltage = regulator_list_voltage_linear_range,
196 .set_voltage_sel = regulator_set_voltage_sel_regmap,
197 .get_voltage_sel = regulator_get_voltage_sel_regmap,
198};
199
200static const struct regulator_ops bd71828_ldo6_ops = {
201 .enable = regulator_enable_regmap,
202 .disable = regulator_disable_regmap,
203 .is_enabled = regulator_is_enabled_regmap,
204};
205
206static const struct bd71828_regulator_data bd71828_rdata[] = {
207 {
208 .desc = {
209 .name = "buck1",
210 .of_match = of_match_ptr("BUCK1"),
211 .regulators_node = of_match_ptr("regulators"),
212 .id = BD71828_BUCK1,
213 .ops = &bd71828_dvs_buck_ops,
214 .type = REGULATOR_VOLTAGE,
215 .linear_ranges = bd71828_buck1267_volts,
216 .n_linear_ranges = ARRAY_SIZE(bd71828_buck1267_volts),
217 .n_voltages = BD71828_BUCK1267_VOLTS,
218 .enable_reg = BD71828_REG_BUCK1_EN,
219 .enable_mask = BD71828_MASK_RUN_EN,
220 .vsel_reg = BD71828_REG_BUCK1_VOLT,
221 .vsel_mask = BD71828_MASK_BUCK1267_VOLT,
222 .owner = THIS_MODULE,
223 .of_parse_cb = buck_set_hw_dvs_levels,
224 },
225 .dvs = {
226 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
227 ROHM_DVS_LEVEL_SUSPEND |
228 ROHM_DVS_LEVEL_LPSR,
229 .run_reg = BD71828_REG_BUCK1_VOLT,
230 .run_mask = BD71828_MASK_BUCK1267_VOLT,
231 .idle_reg = BD71828_REG_BUCK1_IDLE_VOLT,
232 .idle_mask = BD71828_MASK_BUCK1267_VOLT,
233 .idle_on_mask = BD71828_MASK_IDLE_EN,
234 .suspend_reg = BD71828_REG_BUCK1_SUSP_VOLT,
235 .suspend_mask = BD71828_MASK_BUCK1267_VOLT,
236 .suspend_on_mask = BD71828_MASK_SUSP_EN,
237 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
238 /*
239 * LPSR voltage is same as SUSPEND voltage. Allow
240 * setting it so that regulator can be set enabled at
241 * LPSR state
242 */
243 .lpsr_reg = BD71828_REG_BUCK1_SUSP_VOLT,
244 .lpsr_mask = BD71828_MASK_BUCK1267_VOLT,
245 },
246 .reg_inits = buck1_inits,
247 .reg_init_amnt = ARRAY_SIZE(buck1_inits),
248 },
249 {
250 .desc = {
251 .name = "buck2",
252 .of_match = of_match_ptr("BUCK2"),
253 .regulators_node = of_match_ptr("regulators"),
254 .id = BD71828_BUCK2,
255 .ops = &bd71828_dvs_buck_ops,
256 .type = REGULATOR_VOLTAGE,
257 .linear_ranges = bd71828_buck1267_volts,
258 .n_linear_ranges = ARRAY_SIZE(bd71828_buck1267_volts),
259 .n_voltages = BD71828_BUCK1267_VOLTS,
260 .enable_reg = BD71828_REG_BUCK2_EN,
261 .enable_mask = BD71828_MASK_RUN_EN,
262 .vsel_reg = BD71828_REG_BUCK2_VOLT,
263 .vsel_mask = BD71828_MASK_BUCK1267_VOLT,
264 .owner = THIS_MODULE,
265 .of_parse_cb = buck_set_hw_dvs_levels,
266 },
267 .dvs = {
268 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
269 ROHM_DVS_LEVEL_SUSPEND |
270 ROHM_DVS_LEVEL_LPSR,
271 .run_reg = BD71828_REG_BUCK2_VOLT,
272 .run_mask = BD71828_MASK_BUCK1267_VOLT,
273 .idle_reg = BD71828_REG_BUCK2_IDLE_VOLT,
274 .idle_mask = BD71828_MASK_BUCK1267_VOLT,
275 .idle_on_mask = BD71828_MASK_IDLE_EN,
276 .suspend_reg = BD71828_REG_BUCK2_SUSP_VOLT,
277 .suspend_mask = BD71828_MASK_BUCK1267_VOLT,
278 .suspend_on_mask = BD71828_MASK_SUSP_EN,
279 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
280 .lpsr_reg = BD71828_REG_BUCK2_SUSP_VOLT,
281 .lpsr_mask = BD71828_MASK_BUCK1267_VOLT,
282 },
283 .reg_inits = buck2_inits,
284 .reg_init_amnt = ARRAY_SIZE(buck2_inits),
285 },
286 {
287 .desc = {
288 .name = "buck3",
289 .of_match = of_match_ptr("BUCK3"),
290 .regulators_node = of_match_ptr("regulators"),
291 .id = BD71828_BUCK3,
292 .ops = &bd71828_buck_ops,
293 .type = REGULATOR_VOLTAGE,
294 .linear_ranges = bd71828_buck3_volts,
295 .n_linear_ranges = ARRAY_SIZE(bd71828_buck3_volts),
296 .n_voltages = BD71828_BUCK3_VOLTS,
297 .enable_reg = BD71828_REG_BUCK3_EN,
298 .enable_mask = BD71828_MASK_RUN_EN,
299 .vsel_reg = BD71828_REG_BUCK3_VOLT,
300 .vsel_mask = BD71828_MASK_BUCK3_VOLT,
301 .owner = THIS_MODULE,
302 .of_parse_cb = buck_set_hw_dvs_levels,
303 },
304 .dvs = {
305 /*
306 * BUCK3 only supports single voltage for all states.
307 * voltage can be individually enabled for each state
308 * though => allow setting all states to support
309 * enabling power rail on different states.
310 */
311 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
312 ROHM_DVS_LEVEL_SUSPEND |
313 ROHM_DVS_LEVEL_LPSR,
314 .run_reg = BD71828_REG_BUCK3_VOLT,
315 .idle_reg = BD71828_REG_BUCK3_VOLT,
316 .suspend_reg = BD71828_REG_BUCK3_VOLT,
317 .lpsr_reg = BD71828_REG_BUCK3_VOLT,
318 .run_mask = BD71828_MASK_BUCK3_VOLT,
319 .idle_mask = BD71828_MASK_BUCK3_VOLT,
320 .suspend_mask = BD71828_MASK_BUCK3_VOLT,
321 .lpsr_mask = BD71828_MASK_BUCK3_VOLT,
322 .idle_on_mask = BD71828_MASK_IDLE_EN,
323 .suspend_on_mask = BD71828_MASK_SUSP_EN,
324 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
325 },
326 },
327 {
328 .desc = {
329 .name = "buck4",
330 .of_match = of_match_ptr("BUCK4"),
331 .regulators_node = of_match_ptr("regulators"),
332 .id = BD71828_BUCK4,
333 .ops = &bd71828_buck_ops,
334 .type = REGULATOR_VOLTAGE,
335 .linear_ranges = bd71828_buck4_volts,
336 .n_linear_ranges = ARRAY_SIZE(bd71828_buck4_volts),
337 .n_voltages = BD71828_BUCK4_VOLTS,
338 .enable_reg = BD71828_REG_BUCK4_EN,
339 .enable_mask = BD71828_MASK_RUN_EN,
340 .vsel_reg = BD71828_REG_BUCK4_VOLT,
341 .vsel_mask = BD71828_MASK_BUCK4_VOLT,
342 .owner = THIS_MODULE,
343 .of_parse_cb = buck_set_hw_dvs_levels,
344 },
345 .dvs = {
346 /*
347 * BUCK4 only supports single voltage for all states.
348 * voltage can be individually enabled for each state
349 * though => allow setting all states to support
350 * enabling power rail on different states.
351 */
352 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
353 ROHM_DVS_LEVEL_SUSPEND |
354 ROHM_DVS_LEVEL_LPSR,
355 .run_reg = BD71828_REG_BUCK4_VOLT,
356 .idle_reg = BD71828_REG_BUCK4_VOLT,
357 .suspend_reg = BD71828_REG_BUCK4_VOLT,
358 .lpsr_reg = BD71828_REG_BUCK4_VOLT,
359 .run_mask = BD71828_MASK_BUCK4_VOLT,
360 .idle_mask = BD71828_MASK_BUCK4_VOLT,
361 .suspend_mask = BD71828_MASK_BUCK4_VOLT,
362 .lpsr_mask = BD71828_MASK_BUCK4_VOLT,
363 .idle_on_mask = BD71828_MASK_IDLE_EN,
364 .suspend_on_mask = BD71828_MASK_SUSP_EN,
365 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
366 },
367 },
368 {
369 .desc = {
370 .name = "buck5",
371 .of_match = of_match_ptr("BUCK5"),
372 .regulators_node = of_match_ptr("regulators"),
373 .id = BD71828_BUCK5,
374 .ops = &bd71828_buck_ops,
375 .type = REGULATOR_VOLTAGE,
376 .linear_ranges = bd71828_buck5_volts,
377 .n_linear_ranges = ARRAY_SIZE(bd71828_buck5_volts),
378 .n_voltages = BD71828_BUCK5_VOLTS,
379 .enable_reg = BD71828_REG_BUCK5_EN,
380 .enable_mask = BD71828_MASK_RUN_EN,
381 .vsel_reg = BD71828_REG_BUCK5_VOLT,
382 .vsel_mask = BD71828_MASK_BUCK5_VOLT,
383 .owner = THIS_MODULE,
384 .of_parse_cb = buck_set_hw_dvs_levels,
385 },
386 .dvs = {
387 /*
388 * BUCK5 only supports single voltage for all states.
389 * voltage can be individually enabled for each state
390 * though => allow setting all states to support
391 * enabling power rail on different states.
392 */
393 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
394 ROHM_DVS_LEVEL_SUSPEND |
395 ROHM_DVS_LEVEL_LPSR,
396 .run_reg = BD71828_REG_BUCK5_VOLT,
397 .idle_reg = BD71828_REG_BUCK5_VOLT,
398 .suspend_reg = BD71828_REG_BUCK5_VOLT,
399 .lpsr_reg = BD71828_REG_BUCK5_VOLT,
400 .run_mask = BD71828_MASK_BUCK5_VOLT,
401 .idle_mask = BD71828_MASK_BUCK5_VOLT,
402 .suspend_mask = BD71828_MASK_BUCK5_VOLT,
403 .lpsr_mask = BD71828_MASK_BUCK5_VOLT,
404 .idle_on_mask = BD71828_MASK_IDLE_EN,
405 .suspend_on_mask = BD71828_MASK_SUSP_EN,
406 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
407 },
408 },
409 {
410 .desc = {
411 .name = "buck6",
412 .of_match = of_match_ptr("BUCK6"),
413 .regulators_node = of_match_ptr("regulators"),
414 .id = BD71828_BUCK6,
415 .ops = &bd71828_dvs_buck_ops,
416 .type = REGULATOR_VOLTAGE,
417 .linear_ranges = bd71828_buck1267_volts,
418 .n_linear_ranges = ARRAY_SIZE(bd71828_buck1267_volts),
419 .n_voltages = BD71828_BUCK1267_VOLTS,
420 .enable_reg = BD71828_REG_BUCK6_EN,
421 .enable_mask = BD71828_MASK_RUN_EN,
422 .vsel_reg = BD71828_REG_BUCK6_VOLT,
423 .vsel_mask = BD71828_MASK_BUCK1267_VOLT,
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_BUCK6_VOLT,
432 .run_mask = BD71828_MASK_BUCK1267_VOLT,
433 .idle_reg = BD71828_REG_BUCK6_IDLE_VOLT,
434 .idle_mask = BD71828_MASK_BUCK1267_VOLT,
435 .idle_on_mask = BD71828_MASK_IDLE_EN,
436 .suspend_reg = BD71828_REG_BUCK6_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_BUCK6_SUSP_VOLT,
441 .lpsr_mask = BD71828_MASK_BUCK1267_VOLT,
442 },
443 .reg_inits = buck6_inits,
444 .reg_init_amnt = ARRAY_SIZE(buck6_inits),
445 },
446 {
447 .desc = {
448 .name = "buck7",
449 .of_match = of_match_ptr("BUCK7"),
450 .regulators_node = of_match_ptr("regulators"),
451 .id = BD71828_BUCK7,
452 .ops = &bd71828_dvs_buck_ops,
453 .type = REGULATOR_VOLTAGE,
454 .linear_ranges = bd71828_buck1267_volts,
455 .n_linear_ranges = ARRAY_SIZE(bd71828_buck1267_volts),
456 .n_voltages = BD71828_BUCK1267_VOLTS,
457 .enable_reg = BD71828_REG_BUCK7_EN,
458 .enable_mask = BD71828_MASK_RUN_EN,
459 .vsel_reg = BD71828_REG_BUCK7_VOLT,
460 .vsel_mask = BD71828_MASK_BUCK1267_VOLT,
461 .owner = THIS_MODULE,
462 .of_parse_cb = buck_set_hw_dvs_levels,
463 },
464 .dvs = {
465 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
466 ROHM_DVS_LEVEL_SUSPEND |
467 ROHM_DVS_LEVEL_LPSR,
468 .run_reg = BD71828_REG_BUCK7_VOLT,
469 .run_mask = BD71828_MASK_BUCK1267_VOLT,
470 .idle_reg = BD71828_REG_BUCK7_IDLE_VOLT,
471 .idle_mask = BD71828_MASK_BUCK1267_VOLT,
472 .idle_on_mask = BD71828_MASK_IDLE_EN,
473 .suspend_reg = BD71828_REG_BUCK7_SUSP_VOLT,
474 .suspend_mask = BD71828_MASK_BUCK1267_VOLT,
475 .suspend_on_mask = BD71828_MASK_SUSP_EN,
476 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
477 .lpsr_reg = BD71828_REG_BUCK7_SUSP_VOLT,
478 .lpsr_mask = BD71828_MASK_BUCK1267_VOLT,
479 },
480 .reg_inits = buck7_inits,
481 .reg_init_amnt = ARRAY_SIZE(buck7_inits),
482 },
483 {
484 .desc = {
485 .name = "ldo1",
486 .of_match = of_match_ptr("LDO1"),
487 .regulators_node = of_match_ptr("regulators"),
488 .id = BD71828_LDO1,
489 .ops = &bd71828_ldo_ops,
490 .type = REGULATOR_VOLTAGE,
491 .linear_ranges = bd71828_ldo_volts,
492 .n_linear_ranges = ARRAY_SIZE(bd71828_ldo_volts),
493 .n_voltages = BD71828_LDO_VOLTS,
494 .enable_reg = BD71828_REG_LDO1_EN,
495 .enable_mask = BD71828_MASK_RUN_EN,
496 .vsel_reg = BD71828_REG_LDO1_VOLT,
497 .vsel_mask = BD71828_MASK_LDO_VOLT,
498 .owner = THIS_MODULE,
499 .of_parse_cb = buck_set_hw_dvs_levels,
500 },
501 .dvs = {
502 /*
503 * LDO1 only supports single voltage for all states.
504 * voltage can be individually enabled for each state
505 * though => allow setting all states to support
506 * enabling power rail on different states.
507 */
508 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
509 ROHM_DVS_LEVEL_SUSPEND |
510 ROHM_DVS_LEVEL_LPSR,
511 .run_reg = BD71828_REG_LDO1_VOLT,
512 .idle_reg = BD71828_REG_LDO1_VOLT,
513 .suspend_reg = BD71828_REG_LDO1_VOLT,
514 .lpsr_reg = BD71828_REG_LDO1_VOLT,
515 .run_mask = BD71828_MASK_LDO_VOLT,
516 .idle_mask = BD71828_MASK_LDO_VOLT,
517 .suspend_mask = BD71828_MASK_LDO_VOLT,
518 .lpsr_mask = BD71828_MASK_LDO_VOLT,
519 .idle_on_mask = BD71828_MASK_IDLE_EN,
520 .suspend_on_mask = BD71828_MASK_SUSP_EN,
521 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
522 },
523 }, {
524 .desc = {
525 .name = "ldo2",
526 .of_match = of_match_ptr("LDO2"),
527 .regulators_node = of_match_ptr("regulators"),
528 .id = BD71828_LDO2,
529 .ops = &bd71828_ldo_ops,
530 .type = REGULATOR_VOLTAGE,
531 .linear_ranges = bd71828_ldo_volts,
532 .n_linear_ranges = ARRAY_SIZE(bd71828_ldo_volts),
533 .n_voltages = BD71828_LDO_VOLTS,
534 .enable_reg = BD71828_REG_LDO2_EN,
535 .enable_mask = BD71828_MASK_RUN_EN,
536 .vsel_reg = BD71828_REG_LDO2_VOLT,
537 .vsel_mask = BD71828_MASK_LDO_VOLT,
538 .owner = THIS_MODULE,
539 .of_parse_cb = buck_set_hw_dvs_levels,
540 },
541 .dvs = {
542 /*
543 * LDO2 only supports single voltage for all states.
544 * voltage can be individually enabled for each state
545 * though => allow setting all states to support
546 * enabling power rail on different states.
547 */
548 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
549 ROHM_DVS_LEVEL_SUSPEND |
550 ROHM_DVS_LEVEL_LPSR,
551 .run_reg = BD71828_REG_LDO2_VOLT,
552 .idle_reg = BD71828_REG_LDO2_VOLT,
553 .suspend_reg = BD71828_REG_LDO2_VOLT,
554 .lpsr_reg = BD71828_REG_LDO2_VOLT,
555 .run_mask = BD71828_MASK_LDO_VOLT,
556 .idle_mask = BD71828_MASK_LDO_VOLT,
557 .suspend_mask = BD71828_MASK_LDO_VOLT,
558 .lpsr_mask = BD71828_MASK_LDO_VOLT,
559 .idle_on_mask = BD71828_MASK_IDLE_EN,
560 .suspend_on_mask = BD71828_MASK_SUSP_EN,
561 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
562 },
563 }, {
564 .desc = {
565 .name = "ldo3",
566 .of_match = of_match_ptr("LDO3"),
567 .regulators_node = of_match_ptr("regulators"),
568 .id = BD71828_LDO3,
569 .ops = &bd71828_ldo_ops,
570 .type = REGULATOR_VOLTAGE,
571 .linear_ranges = bd71828_ldo_volts,
572 .n_linear_ranges = ARRAY_SIZE(bd71828_ldo_volts),
573 .n_voltages = BD71828_LDO_VOLTS,
574 .enable_reg = BD71828_REG_LDO3_EN,
575 .enable_mask = BD71828_MASK_RUN_EN,
576 .vsel_reg = BD71828_REG_LDO3_VOLT,
577 .vsel_mask = BD71828_MASK_LDO_VOLT,
578 .owner = THIS_MODULE,
579 .of_parse_cb = buck_set_hw_dvs_levels,
580 },
581 .dvs = {
582 /*
583 * LDO3 only supports single voltage for all states.
584 * voltage can be individually enabled for each state
585 * though => allow setting all states to support
586 * enabling power rail on different states.
587 */
588 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
589 ROHM_DVS_LEVEL_SUSPEND |
590 ROHM_DVS_LEVEL_LPSR,
591 .run_reg = BD71828_REG_LDO3_VOLT,
592 .idle_reg = BD71828_REG_LDO3_VOLT,
593 .suspend_reg = BD71828_REG_LDO3_VOLT,
594 .lpsr_reg = BD71828_REG_LDO3_VOLT,
595 .run_mask = BD71828_MASK_LDO_VOLT,
596 .idle_mask = BD71828_MASK_LDO_VOLT,
597 .suspend_mask = BD71828_MASK_LDO_VOLT,
598 .lpsr_mask = BD71828_MASK_LDO_VOLT,
599 .idle_on_mask = BD71828_MASK_IDLE_EN,
600 .suspend_on_mask = BD71828_MASK_SUSP_EN,
601 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
602 },
603
604 }, {
605 .desc = {
606 .name = "ldo4",
607 .of_match = of_match_ptr("LDO4"),
608 .regulators_node = of_match_ptr("regulators"),
609 .id = BD71828_LDO4,
610 .ops = &bd71828_ldo_ops,
611 .type = REGULATOR_VOLTAGE,
612 .linear_ranges = bd71828_ldo_volts,
613 .n_linear_ranges = ARRAY_SIZE(bd71828_ldo_volts),
614 .n_voltages = BD71828_LDO_VOLTS,
615 .enable_reg = BD71828_REG_LDO4_EN,
616 .enable_mask = BD71828_MASK_RUN_EN,
617 .vsel_reg = BD71828_REG_LDO4_VOLT,
618 .vsel_mask = BD71828_MASK_LDO_VOLT,
619 .owner = THIS_MODULE,
620 .of_parse_cb = buck_set_hw_dvs_levels,
621 },
622 .dvs = {
623 /*
624 * LDO1 only supports single voltage for all states.
625 * voltage can be individually enabled for each state
626 * though => allow setting all states to support
627 * enabling power rail on different states.
628 */
629 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
630 ROHM_DVS_LEVEL_SUSPEND |
631 ROHM_DVS_LEVEL_LPSR,
632 .run_reg = BD71828_REG_LDO4_VOLT,
633 .idle_reg = BD71828_REG_LDO4_VOLT,
634 .suspend_reg = BD71828_REG_LDO4_VOLT,
635 .lpsr_reg = BD71828_REG_LDO4_VOLT,
636 .run_mask = BD71828_MASK_LDO_VOLT,
637 .idle_mask = BD71828_MASK_LDO_VOLT,
638 .suspend_mask = BD71828_MASK_LDO_VOLT,
639 .lpsr_mask = BD71828_MASK_LDO_VOLT,
640 .idle_on_mask = BD71828_MASK_IDLE_EN,
641 .suspend_on_mask = BD71828_MASK_SUSP_EN,
642 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
643 },
644 }, {
645 .desc = {
646 .name = "ldo5",
647 .of_match = of_match_ptr("LDO5"),
648 .regulators_node = of_match_ptr("regulators"),
649 .id = BD71828_LDO5,
650 .ops = &bd71828_ldo_ops,
651 .type = REGULATOR_VOLTAGE,
652 .linear_ranges = bd71828_ldo_volts,
653 .n_linear_ranges = ARRAY_SIZE(bd71828_ldo_volts),
654 .n_voltages = BD71828_LDO_VOLTS,
655 .enable_reg = BD71828_REG_LDO5_EN,
656 .enable_mask = BD71828_MASK_RUN_EN,
657 .vsel_reg = BD71828_REG_LDO5_VOLT,
658 .vsel_mask = BD71828_MASK_LDO_VOLT,
659 .of_parse_cb = buck_set_hw_dvs_levels,
660 .owner = THIS_MODULE,
661 },
662 /*
663 * LDO5 is special. It can choose vsel settings to be configured
664 * from 2 different registers (by GPIO).
665 *
666 * This driver supports only configuration where
667 * BD71828_REG_LDO5_VOLT_L is used.
668 */
669 .dvs = {
670 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
671 ROHM_DVS_LEVEL_SUSPEND |
672 ROHM_DVS_LEVEL_LPSR,
673 .run_reg = BD71828_REG_LDO5_VOLT,
674 .idle_reg = BD71828_REG_LDO5_VOLT,
675 .suspend_reg = BD71828_REG_LDO5_VOLT,
676 .lpsr_reg = BD71828_REG_LDO5_VOLT,
677 .run_mask = BD71828_MASK_LDO_VOLT,
678 .idle_mask = BD71828_MASK_LDO_VOLT,
679 .suspend_mask = BD71828_MASK_LDO_VOLT,
680 .lpsr_mask = BD71828_MASK_LDO_VOLT,
681 .idle_on_mask = BD71828_MASK_IDLE_EN,
682 .suspend_on_mask = BD71828_MASK_SUSP_EN,
683 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
684 },
685
686 }, {
687 .desc = {
688 .name = "ldo6",
689 .of_match = of_match_ptr("LDO6"),
690 .regulators_node = of_match_ptr("regulators"),
691 .id = BD71828_LDO6,
692 .ops = &bd71828_ldo6_ops,
693 .type = REGULATOR_VOLTAGE,
694 .fixed_uV = BD71828_LDO_6_VOLTAGE,
695 .n_voltages = 1,
696 .enable_reg = BD71828_REG_LDO6_EN,
697 .enable_mask = BD71828_MASK_RUN_EN,
698 .owner = THIS_MODULE,
699 /*
700 * LDO6 only supports enable/disable for all states.
701 * Voltage for LDO6 is fixed.
702 */
703 .of_parse_cb = ldo6_parse_dt,
704 },
705 }, {
706 .desc = {
707 /* SNVS LDO in data-sheet */
708 .name = "ldo7",
709 .of_match = of_match_ptr("LDO7"),
710 .regulators_node = of_match_ptr("regulators"),
711 .id = BD71828_LDO_SNVS,
712 .ops = &bd71828_ldo_ops,
713 .type = REGULATOR_VOLTAGE,
714 .linear_ranges = bd71828_ldo_volts,
715 .n_linear_ranges = ARRAY_SIZE(bd71828_ldo_volts),
716 .n_voltages = BD71828_LDO_VOLTS,
717 .enable_reg = BD71828_REG_LDO7_EN,
718 .enable_mask = BD71828_MASK_RUN_EN,
719 .vsel_reg = BD71828_REG_LDO7_VOLT,
720 .vsel_mask = BD71828_MASK_LDO_VOLT,
721 .owner = THIS_MODULE,
722 .of_parse_cb = buck_set_hw_dvs_levels,
723 },
724 .dvs = {
725 /*
726 * LDO7 only supports single voltage for all states.
727 * voltage can be individually enabled for each state
728 * though => allow setting all states to support
729 * enabling power rail on different states.
730 */
731 .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
732 ROHM_DVS_LEVEL_SUSPEND |
733 ROHM_DVS_LEVEL_LPSR,
734 .run_reg = BD71828_REG_LDO7_VOLT,
735 .idle_reg = BD71828_REG_LDO7_VOLT,
736 .suspend_reg = BD71828_REG_LDO7_VOLT,
737 .lpsr_reg = BD71828_REG_LDO7_VOLT,
738 .run_mask = BD71828_MASK_LDO_VOLT,
739 .idle_mask = BD71828_MASK_LDO_VOLT,
740 .suspend_mask = BD71828_MASK_LDO_VOLT,
741 .lpsr_mask = BD71828_MASK_LDO_VOLT,
742 .idle_on_mask = BD71828_MASK_IDLE_EN,
743 .suspend_on_mask = BD71828_MASK_SUSP_EN,
744 .lpsr_on_mask = BD71828_MASK_LPSR_EN,
745 },
746
747 },
748};
749
750static int bd71828_probe(struct platform_device *pdev)
751{
752 struct rohm_regmap_dev *bd71828;
753 int i, j, ret;
754 struct regulator_config config = {
755 .dev = pdev->dev.parent,
756 };
757
758 bd71828 = dev_get_drvdata(pdev->dev.parent);
759 if (!bd71828) {
760 dev_err(&pdev->dev, "No MFD driver data\n");
761 return -EINVAL;
762 }
763
764 config.regmap = bd71828->regmap;
765
766 for (i = 0; i < ARRAY_SIZE(bd71828_rdata); i++) {
767 struct regulator_dev *rdev;
768 const struct bd71828_regulator_data *rd;
769
770 rd = &bd71828_rdata[i];
771 rdev = devm_regulator_register(&pdev->dev,
772 &rd->desc, &config);
773 if (IS_ERR(rdev)) {
774 dev_err(&pdev->dev,
775 "failed to register %s regulator\n",
776 rd->desc.name);
777 return PTR_ERR(rdev);
778 }
779 for (j = 0; j < rd->reg_init_amnt; j++) {
780 ret = regmap_update_bits(bd71828->regmap,
781 rd->reg_inits[j].reg,
782 rd->reg_inits[j].mask,
783 rd->reg_inits[j].val);
784 if (ret) {
785 dev_err(&pdev->dev,
786 "regulator %s init failed\n",
787 rd->desc.name);
788 return ret;
789 }
790 }
791 }
792 return 0;
793}
794
795static struct platform_driver bd71828_regulator = {
796 .driver = {
797 .name = "bd71828-pmic"
798 },
799 .probe = bd71828_probe,
800};
801
802module_platform_driver(bd71828_regulator);
803
804MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>");
805MODULE_DESCRIPTION("BD71828 voltage regulator driver");
806MODULE_LICENSE("GPL");
807MODULE_ALIAS("platform:bd71828-pmic");