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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright 2020 NXP.
4 * NXP PCA9450 pmic driver
5 */
6
7#include <linux/err.h>
8#include <linux/gpio/consumer.h>
9#include <linux/i2c.h>
10#include <linux/interrupt.h>
11#include <linux/kernel.h>
12#include <linux/module.h>
13#include <linux/of.h>
14#include <linux/platform_device.h>
15#include <linux/regulator/driver.h>
16#include <linux/regulator/machine.h>
17#include <linux/regulator/of_regulator.h>
18#include <linux/regulator/pca9450.h>
19
20struct pc9450_dvs_config {
21 unsigned int run_reg; /* dvs0 */
22 unsigned int run_mask;
23 unsigned int standby_reg; /* dvs1 */
24 unsigned int standby_mask;
25};
26
27struct pca9450_regulator_desc {
28 struct regulator_desc desc;
29 const struct pc9450_dvs_config dvs;
30};
31
32struct pca9450 {
33 struct device *dev;
34 struct regmap *regmap;
35 struct gpio_desc *sd_vsel_gpio;
36 enum pca9450_chip_type type;
37 unsigned int rcnt;
38 int irq;
39};
40
41static const struct regmap_range pca9450_status_range = {
42 .range_min = PCA9450_REG_INT1,
43 .range_max = PCA9450_REG_PWRON_STAT,
44};
45
46static const struct regmap_access_table pca9450_volatile_regs = {
47 .yes_ranges = &pca9450_status_range,
48 .n_yes_ranges = 1,
49};
50
51static const struct regmap_config pca9450_regmap_config = {
52 .reg_bits = 8,
53 .val_bits = 8,
54 .volatile_table = &pca9450_volatile_regs,
55 .max_register = PCA9450_MAX_REGISTER - 1,
56 .cache_type = REGCACHE_MAPLE,
57};
58
59/*
60 * BUCK1/2/3
61 * BUCK1RAM[1:0] BUCK1 DVS ramp rate setting
62 * 00: 25mV/1usec
63 * 01: 25mV/2usec
64 * 10: 25mV/4usec
65 * 11: 25mV/8usec
66 */
67static const unsigned int pca9450_dvs_buck_ramp_table[] = {
68 25000, 12500, 6250, 3125
69};
70
71static const struct regulator_ops pca9450_dvs_buck_regulator_ops = {
72 .enable = regulator_enable_regmap,
73 .disable = regulator_disable_regmap,
74 .is_enabled = regulator_is_enabled_regmap,
75 .list_voltage = regulator_list_voltage_linear_range,
76 .set_voltage_sel = regulator_set_voltage_sel_regmap,
77 .get_voltage_sel = regulator_get_voltage_sel_regmap,
78 .set_voltage_time_sel = regulator_set_voltage_time_sel,
79 .set_ramp_delay = regulator_set_ramp_delay_regmap,
80};
81
82static const struct regulator_ops pca9450_buck_regulator_ops = {
83 .enable = regulator_enable_regmap,
84 .disable = regulator_disable_regmap,
85 .is_enabled = regulator_is_enabled_regmap,
86 .list_voltage = regulator_list_voltage_linear_range,
87 .set_voltage_sel = regulator_set_voltage_sel_regmap,
88 .get_voltage_sel = regulator_get_voltage_sel_regmap,
89 .set_voltage_time_sel = regulator_set_voltage_time_sel,
90};
91
92static const struct regulator_ops pca9450_ldo_regulator_ops = {
93 .enable = regulator_enable_regmap,
94 .disable = regulator_disable_regmap,
95 .is_enabled = regulator_is_enabled_regmap,
96 .list_voltage = regulator_list_voltage_linear_range,
97 .set_voltage_sel = regulator_set_voltage_sel_regmap,
98 .get_voltage_sel = regulator_get_voltage_sel_regmap,
99};
100
101/*
102 * BUCK1/2/3
103 * 0.60 to 2.1875V (12.5mV step)
104 */
105static const struct linear_range pca9450_dvs_buck_volts[] = {
106 REGULATOR_LINEAR_RANGE(600000, 0x00, 0x7F, 12500),
107};
108
109/*
110 * BUCK1/3
111 * 0.65 to 2.2375V (12.5mV step)
112 */
113static const struct linear_range pca9451a_dvs_buck_volts[] = {
114 REGULATOR_LINEAR_RANGE(650000, 0x00, 0x7F, 12500),
115};
116
117/*
118 * BUCK4/5/6
119 * 0.6V to 3.4V (25mV step)
120 */
121static const struct linear_range pca9450_buck_volts[] = {
122 REGULATOR_LINEAR_RANGE(600000, 0x00, 0x70, 25000),
123 REGULATOR_LINEAR_RANGE(3400000, 0x71, 0x7F, 0),
124};
125
126/*
127 * LDO1
128 * 1.6 to 3.3V ()
129 */
130static const struct linear_range pca9450_ldo1_volts[] = {
131 REGULATOR_LINEAR_RANGE(1600000, 0x00, 0x03, 100000),
132 REGULATOR_LINEAR_RANGE(3000000, 0x04, 0x07, 100000),
133};
134
135/*
136 * LDO2
137 * 0.8 to 1.15V (50mV step)
138 */
139static const struct linear_range pca9450_ldo2_volts[] = {
140 REGULATOR_LINEAR_RANGE(800000, 0x00, 0x07, 50000),
141};
142
143/*
144 * LDO3/4
145 * 0.8 to 3.3V (100mV step)
146 */
147static const struct linear_range pca9450_ldo34_volts[] = {
148 REGULATOR_LINEAR_RANGE(800000, 0x00, 0x19, 100000),
149 REGULATOR_LINEAR_RANGE(3300000, 0x1A, 0x1F, 0),
150};
151
152/*
153 * LDO5
154 * 1.8 to 3.3V (100mV step)
155 */
156static const struct linear_range pca9450_ldo5_volts[] = {
157 REGULATOR_LINEAR_RANGE(1800000, 0x00, 0x0F, 100000),
158};
159
160static int buck_set_dvs(const struct regulator_desc *desc,
161 struct device_node *np, struct regmap *regmap,
162 char *prop, unsigned int reg, unsigned int mask)
163{
164 int ret, i;
165 uint32_t uv;
166
167 ret = of_property_read_u32(np, prop, &uv);
168 if (ret == -EINVAL)
169 return 0;
170 else if (ret)
171 return ret;
172
173 for (i = 0; i < desc->n_voltages; i++) {
174 ret = regulator_desc_list_voltage_linear_range(desc, i);
175 if (ret < 0)
176 continue;
177 if (ret == uv) {
178 i <<= ffs(desc->vsel_mask) - 1;
179 ret = regmap_update_bits(regmap, reg, mask, i);
180 break;
181 }
182 }
183
184 if (ret == 0) {
185 struct pca9450_regulator_desc *regulator = container_of(desc,
186 struct pca9450_regulator_desc, desc);
187
188 /* Enable DVS control through PMIC_STBY_REQ for this BUCK */
189 ret = regmap_update_bits(regmap, regulator->desc.enable_reg,
190 BUCK1_DVS_CTRL, BUCK1_DVS_CTRL);
191 }
192 return ret;
193}
194
195static int pca9450_set_dvs_levels(struct device_node *np,
196 const struct regulator_desc *desc,
197 struct regulator_config *cfg)
198{
199 struct pca9450_regulator_desc *data = container_of(desc,
200 struct pca9450_regulator_desc, desc);
201 const struct pc9450_dvs_config *dvs = &data->dvs;
202 unsigned int reg, mask;
203 char *prop;
204 int i, ret = 0;
205
206 for (i = 0; i < PCA9450_DVS_LEVEL_MAX; i++) {
207 switch (i) {
208 case PCA9450_DVS_LEVEL_RUN:
209 prop = "nxp,dvs-run-voltage";
210 reg = dvs->run_reg;
211 mask = dvs->run_mask;
212 break;
213 case PCA9450_DVS_LEVEL_STANDBY:
214 prop = "nxp,dvs-standby-voltage";
215 reg = dvs->standby_reg;
216 mask = dvs->standby_mask;
217 break;
218 default:
219 return -EINVAL;
220 }
221
222 ret = buck_set_dvs(desc, np, cfg->regmap, prop, reg, mask);
223 if (ret)
224 break;
225 }
226
227 return ret;
228}
229
230static const struct pca9450_regulator_desc pca9450a_regulators[] = {
231 {
232 .desc = {
233 .name = "buck1",
234 .of_match = of_match_ptr("BUCK1"),
235 .regulators_node = of_match_ptr("regulators"),
236 .id = PCA9450_BUCK1,
237 .ops = &pca9450_dvs_buck_regulator_ops,
238 .type = REGULATOR_VOLTAGE,
239 .n_voltages = PCA9450_BUCK1_VOLTAGE_NUM,
240 .linear_ranges = pca9450_dvs_buck_volts,
241 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
242 .vsel_reg = PCA9450_REG_BUCK1OUT_DVS0,
243 .vsel_mask = BUCK1OUT_DVS0_MASK,
244 .enable_reg = PCA9450_REG_BUCK1CTRL,
245 .enable_mask = BUCK1_ENMODE_MASK,
246 .ramp_reg = PCA9450_REG_BUCK1CTRL,
247 .ramp_mask = BUCK1_RAMP_MASK,
248 .ramp_delay_table = pca9450_dvs_buck_ramp_table,
249 .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
250 .owner = THIS_MODULE,
251 .of_parse_cb = pca9450_set_dvs_levels,
252 },
253 .dvs = {
254 .run_reg = PCA9450_REG_BUCK1OUT_DVS0,
255 .run_mask = BUCK1OUT_DVS0_MASK,
256 .standby_reg = PCA9450_REG_BUCK1OUT_DVS1,
257 .standby_mask = BUCK1OUT_DVS1_MASK,
258 },
259 },
260 {
261 .desc = {
262 .name = "buck2",
263 .of_match = of_match_ptr("BUCK2"),
264 .regulators_node = of_match_ptr("regulators"),
265 .id = PCA9450_BUCK2,
266 .ops = &pca9450_dvs_buck_regulator_ops,
267 .type = REGULATOR_VOLTAGE,
268 .n_voltages = PCA9450_BUCK2_VOLTAGE_NUM,
269 .linear_ranges = pca9450_dvs_buck_volts,
270 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
271 .vsel_reg = PCA9450_REG_BUCK2OUT_DVS0,
272 .vsel_mask = BUCK2OUT_DVS0_MASK,
273 .enable_reg = PCA9450_REG_BUCK2CTRL,
274 .enable_mask = BUCK2_ENMODE_MASK,
275 .ramp_reg = PCA9450_REG_BUCK2CTRL,
276 .ramp_mask = BUCK2_RAMP_MASK,
277 .ramp_delay_table = pca9450_dvs_buck_ramp_table,
278 .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
279 .owner = THIS_MODULE,
280 .of_parse_cb = pca9450_set_dvs_levels,
281 },
282 .dvs = {
283 .run_reg = PCA9450_REG_BUCK2OUT_DVS0,
284 .run_mask = BUCK2OUT_DVS0_MASK,
285 .standby_reg = PCA9450_REG_BUCK2OUT_DVS1,
286 .standby_mask = BUCK2OUT_DVS1_MASK,
287 },
288 },
289 {
290 .desc = {
291 .name = "buck3",
292 .of_match = of_match_ptr("BUCK3"),
293 .regulators_node = of_match_ptr("regulators"),
294 .id = PCA9450_BUCK3,
295 .ops = &pca9450_dvs_buck_regulator_ops,
296 .type = REGULATOR_VOLTAGE,
297 .n_voltages = PCA9450_BUCK3_VOLTAGE_NUM,
298 .linear_ranges = pca9450_dvs_buck_volts,
299 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
300 .vsel_reg = PCA9450_REG_BUCK3OUT_DVS0,
301 .vsel_mask = BUCK3OUT_DVS0_MASK,
302 .enable_reg = PCA9450_REG_BUCK3CTRL,
303 .enable_mask = BUCK3_ENMODE_MASK,
304 .ramp_reg = PCA9450_REG_BUCK3CTRL,
305 .ramp_mask = BUCK3_RAMP_MASK,
306 .ramp_delay_table = pca9450_dvs_buck_ramp_table,
307 .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
308 .owner = THIS_MODULE,
309 .of_parse_cb = pca9450_set_dvs_levels,
310 },
311 .dvs = {
312 .run_reg = PCA9450_REG_BUCK3OUT_DVS0,
313 .run_mask = BUCK3OUT_DVS0_MASK,
314 .standby_reg = PCA9450_REG_BUCK3OUT_DVS1,
315 .standby_mask = BUCK3OUT_DVS1_MASK,
316 },
317 },
318 {
319 .desc = {
320 .name = "buck4",
321 .of_match = of_match_ptr("BUCK4"),
322 .regulators_node = of_match_ptr("regulators"),
323 .id = PCA9450_BUCK4,
324 .ops = &pca9450_buck_regulator_ops,
325 .type = REGULATOR_VOLTAGE,
326 .n_voltages = PCA9450_BUCK4_VOLTAGE_NUM,
327 .linear_ranges = pca9450_buck_volts,
328 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
329 .vsel_reg = PCA9450_REG_BUCK4OUT,
330 .vsel_mask = BUCK4OUT_MASK,
331 .enable_reg = PCA9450_REG_BUCK4CTRL,
332 .enable_mask = BUCK4_ENMODE_MASK,
333 .owner = THIS_MODULE,
334 },
335 },
336 {
337 .desc = {
338 .name = "buck5",
339 .of_match = of_match_ptr("BUCK5"),
340 .regulators_node = of_match_ptr("regulators"),
341 .id = PCA9450_BUCK5,
342 .ops = &pca9450_buck_regulator_ops,
343 .type = REGULATOR_VOLTAGE,
344 .n_voltages = PCA9450_BUCK5_VOLTAGE_NUM,
345 .linear_ranges = pca9450_buck_volts,
346 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
347 .vsel_reg = PCA9450_REG_BUCK5OUT,
348 .vsel_mask = BUCK5OUT_MASK,
349 .enable_reg = PCA9450_REG_BUCK5CTRL,
350 .enable_mask = BUCK5_ENMODE_MASK,
351 .owner = THIS_MODULE,
352 },
353 },
354 {
355 .desc = {
356 .name = "buck6",
357 .of_match = of_match_ptr("BUCK6"),
358 .regulators_node = of_match_ptr("regulators"),
359 .id = PCA9450_BUCK6,
360 .ops = &pca9450_buck_regulator_ops,
361 .type = REGULATOR_VOLTAGE,
362 .n_voltages = PCA9450_BUCK6_VOLTAGE_NUM,
363 .linear_ranges = pca9450_buck_volts,
364 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
365 .vsel_reg = PCA9450_REG_BUCK6OUT,
366 .vsel_mask = BUCK6OUT_MASK,
367 .enable_reg = PCA9450_REG_BUCK6CTRL,
368 .enable_mask = BUCK6_ENMODE_MASK,
369 .owner = THIS_MODULE,
370 },
371 },
372 {
373 .desc = {
374 .name = "ldo1",
375 .of_match = of_match_ptr("LDO1"),
376 .regulators_node = of_match_ptr("regulators"),
377 .id = PCA9450_LDO1,
378 .ops = &pca9450_ldo_regulator_ops,
379 .type = REGULATOR_VOLTAGE,
380 .n_voltages = PCA9450_LDO1_VOLTAGE_NUM,
381 .linear_ranges = pca9450_ldo1_volts,
382 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts),
383 .vsel_reg = PCA9450_REG_LDO1CTRL,
384 .vsel_mask = LDO1OUT_MASK,
385 .enable_reg = PCA9450_REG_LDO1CTRL,
386 .enable_mask = LDO1_EN_MASK,
387 .owner = THIS_MODULE,
388 },
389 },
390 {
391 .desc = {
392 .name = "ldo2",
393 .of_match = of_match_ptr("LDO2"),
394 .regulators_node = of_match_ptr("regulators"),
395 .id = PCA9450_LDO2,
396 .ops = &pca9450_ldo_regulator_ops,
397 .type = REGULATOR_VOLTAGE,
398 .n_voltages = PCA9450_LDO2_VOLTAGE_NUM,
399 .linear_ranges = pca9450_ldo2_volts,
400 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo2_volts),
401 .vsel_reg = PCA9450_REG_LDO2CTRL,
402 .vsel_mask = LDO2OUT_MASK,
403 .enable_reg = PCA9450_REG_LDO2CTRL,
404 .enable_mask = LDO2_EN_MASK,
405 .owner = THIS_MODULE,
406 },
407 },
408 {
409 .desc = {
410 .name = "ldo3",
411 .of_match = of_match_ptr("LDO3"),
412 .regulators_node = of_match_ptr("regulators"),
413 .id = PCA9450_LDO3,
414 .ops = &pca9450_ldo_regulator_ops,
415 .type = REGULATOR_VOLTAGE,
416 .n_voltages = PCA9450_LDO3_VOLTAGE_NUM,
417 .linear_ranges = pca9450_ldo34_volts,
418 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
419 .vsel_reg = PCA9450_REG_LDO3CTRL,
420 .vsel_mask = LDO3OUT_MASK,
421 .enable_reg = PCA9450_REG_LDO3CTRL,
422 .enable_mask = LDO3_EN_MASK,
423 .owner = THIS_MODULE,
424 },
425 },
426 {
427 .desc = {
428 .name = "ldo4",
429 .of_match = of_match_ptr("LDO4"),
430 .regulators_node = of_match_ptr("regulators"),
431 .id = PCA9450_LDO4,
432 .ops = &pca9450_ldo_regulator_ops,
433 .type = REGULATOR_VOLTAGE,
434 .n_voltages = PCA9450_LDO4_VOLTAGE_NUM,
435 .linear_ranges = pca9450_ldo34_volts,
436 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
437 .vsel_reg = PCA9450_REG_LDO4CTRL,
438 .vsel_mask = LDO4OUT_MASK,
439 .enable_reg = PCA9450_REG_LDO4CTRL,
440 .enable_mask = LDO4_EN_MASK,
441 .owner = THIS_MODULE,
442 },
443 },
444 {
445 .desc = {
446 .name = "ldo5",
447 .of_match = of_match_ptr("LDO5"),
448 .regulators_node = of_match_ptr("regulators"),
449 .id = PCA9450_LDO5,
450 .ops = &pca9450_ldo_regulator_ops,
451 .type = REGULATOR_VOLTAGE,
452 .n_voltages = PCA9450_LDO5_VOLTAGE_NUM,
453 .linear_ranges = pca9450_ldo5_volts,
454 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts),
455 .vsel_reg = PCA9450_REG_LDO5CTRL_H,
456 .vsel_mask = LDO5HOUT_MASK,
457 .enable_reg = PCA9450_REG_LDO5CTRL_H,
458 .enable_mask = LDO5H_EN_MASK,
459 .owner = THIS_MODULE,
460 },
461 },
462};
463
464/*
465 * Buck3 removed on PCA9450B and connected with Buck1 internal for dual phase
466 * on PCA9450C as no Buck3.
467 */
468static const struct pca9450_regulator_desc pca9450bc_regulators[] = {
469 {
470 .desc = {
471 .name = "buck1",
472 .of_match = of_match_ptr("BUCK1"),
473 .regulators_node = of_match_ptr("regulators"),
474 .id = PCA9450_BUCK1,
475 .ops = &pca9450_dvs_buck_regulator_ops,
476 .type = REGULATOR_VOLTAGE,
477 .n_voltages = PCA9450_BUCK1_VOLTAGE_NUM,
478 .linear_ranges = pca9450_dvs_buck_volts,
479 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
480 .vsel_reg = PCA9450_REG_BUCK1OUT_DVS0,
481 .vsel_mask = BUCK1OUT_DVS0_MASK,
482 .enable_reg = PCA9450_REG_BUCK1CTRL,
483 .enable_mask = BUCK1_ENMODE_MASK,
484 .ramp_reg = PCA9450_REG_BUCK1CTRL,
485 .ramp_mask = BUCK1_RAMP_MASK,
486 .ramp_delay_table = pca9450_dvs_buck_ramp_table,
487 .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
488 .owner = THIS_MODULE,
489 .of_parse_cb = pca9450_set_dvs_levels,
490 },
491 .dvs = {
492 .run_reg = PCA9450_REG_BUCK1OUT_DVS0,
493 .run_mask = BUCK1OUT_DVS0_MASK,
494 .standby_reg = PCA9450_REG_BUCK1OUT_DVS1,
495 .standby_mask = BUCK1OUT_DVS1_MASK,
496 },
497 },
498 {
499 .desc = {
500 .name = "buck2",
501 .of_match = of_match_ptr("BUCK2"),
502 .regulators_node = of_match_ptr("regulators"),
503 .id = PCA9450_BUCK2,
504 .ops = &pca9450_dvs_buck_regulator_ops,
505 .type = REGULATOR_VOLTAGE,
506 .n_voltages = PCA9450_BUCK2_VOLTAGE_NUM,
507 .linear_ranges = pca9450_dvs_buck_volts,
508 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
509 .vsel_reg = PCA9450_REG_BUCK2OUT_DVS0,
510 .vsel_mask = BUCK2OUT_DVS0_MASK,
511 .enable_reg = PCA9450_REG_BUCK2CTRL,
512 .enable_mask = BUCK2_ENMODE_MASK,
513 .ramp_reg = PCA9450_REG_BUCK2CTRL,
514 .ramp_mask = BUCK2_RAMP_MASK,
515 .ramp_delay_table = pca9450_dvs_buck_ramp_table,
516 .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
517 .owner = THIS_MODULE,
518 .of_parse_cb = pca9450_set_dvs_levels,
519 },
520 .dvs = {
521 .run_reg = PCA9450_REG_BUCK2OUT_DVS0,
522 .run_mask = BUCK2OUT_DVS0_MASK,
523 .standby_reg = PCA9450_REG_BUCK2OUT_DVS1,
524 .standby_mask = BUCK2OUT_DVS1_MASK,
525 },
526 },
527 {
528 .desc = {
529 .name = "buck4",
530 .of_match = of_match_ptr("BUCK4"),
531 .regulators_node = of_match_ptr("regulators"),
532 .id = PCA9450_BUCK4,
533 .ops = &pca9450_buck_regulator_ops,
534 .type = REGULATOR_VOLTAGE,
535 .n_voltages = PCA9450_BUCK4_VOLTAGE_NUM,
536 .linear_ranges = pca9450_buck_volts,
537 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
538 .vsel_reg = PCA9450_REG_BUCK4OUT,
539 .vsel_mask = BUCK4OUT_MASK,
540 .enable_reg = PCA9450_REG_BUCK4CTRL,
541 .enable_mask = BUCK4_ENMODE_MASK,
542 .owner = THIS_MODULE,
543 },
544 },
545 {
546 .desc = {
547 .name = "buck5",
548 .of_match = of_match_ptr("BUCK5"),
549 .regulators_node = of_match_ptr("regulators"),
550 .id = PCA9450_BUCK5,
551 .ops = &pca9450_buck_regulator_ops,
552 .type = REGULATOR_VOLTAGE,
553 .n_voltages = PCA9450_BUCK5_VOLTAGE_NUM,
554 .linear_ranges = pca9450_buck_volts,
555 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
556 .vsel_reg = PCA9450_REG_BUCK5OUT,
557 .vsel_mask = BUCK5OUT_MASK,
558 .enable_reg = PCA9450_REG_BUCK5CTRL,
559 .enable_mask = BUCK5_ENMODE_MASK,
560 .owner = THIS_MODULE,
561 },
562 },
563 {
564 .desc = {
565 .name = "buck6",
566 .of_match = of_match_ptr("BUCK6"),
567 .regulators_node = of_match_ptr("regulators"),
568 .id = PCA9450_BUCK6,
569 .ops = &pca9450_buck_regulator_ops,
570 .type = REGULATOR_VOLTAGE,
571 .n_voltages = PCA9450_BUCK6_VOLTAGE_NUM,
572 .linear_ranges = pca9450_buck_volts,
573 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
574 .vsel_reg = PCA9450_REG_BUCK6OUT,
575 .vsel_mask = BUCK6OUT_MASK,
576 .enable_reg = PCA9450_REG_BUCK6CTRL,
577 .enable_mask = BUCK6_ENMODE_MASK,
578 .owner = THIS_MODULE,
579 },
580 },
581 {
582 .desc = {
583 .name = "ldo1",
584 .of_match = of_match_ptr("LDO1"),
585 .regulators_node = of_match_ptr("regulators"),
586 .id = PCA9450_LDO1,
587 .ops = &pca9450_ldo_regulator_ops,
588 .type = REGULATOR_VOLTAGE,
589 .n_voltages = PCA9450_LDO1_VOLTAGE_NUM,
590 .linear_ranges = pca9450_ldo1_volts,
591 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts),
592 .vsel_reg = PCA9450_REG_LDO1CTRL,
593 .vsel_mask = LDO1OUT_MASK,
594 .enable_reg = PCA9450_REG_LDO1CTRL,
595 .enable_mask = LDO1_EN_MASK,
596 .owner = THIS_MODULE,
597 },
598 },
599 {
600 .desc = {
601 .name = "ldo2",
602 .of_match = of_match_ptr("LDO2"),
603 .regulators_node = of_match_ptr("regulators"),
604 .id = PCA9450_LDO2,
605 .ops = &pca9450_ldo_regulator_ops,
606 .type = REGULATOR_VOLTAGE,
607 .n_voltages = PCA9450_LDO2_VOLTAGE_NUM,
608 .linear_ranges = pca9450_ldo2_volts,
609 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo2_volts),
610 .vsel_reg = PCA9450_REG_LDO2CTRL,
611 .vsel_mask = LDO2OUT_MASK,
612 .enable_reg = PCA9450_REG_LDO2CTRL,
613 .enable_mask = LDO2_EN_MASK,
614 .owner = THIS_MODULE,
615 },
616 },
617 {
618 .desc = {
619 .name = "ldo3",
620 .of_match = of_match_ptr("LDO3"),
621 .regulators_node = of_match_ptr("regulators"),
622 .id = PCA9450_LDO3,
623 .ops = &pca9450_ldo_regulator_ops,
624 .type = REGULATOR_VOLTAGE,
625 .n_voltages = PCA9450_LDO3_VOLTAGE_NUM,
626 .linear_ranges = pca9450_ldo34_volts,
627 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
628 .vsel_reg = PCA9450_REG_LDO3CTRL,
629 .vsel_mask = LDO3OUT_MASK,
630 .enable_reg = PCA9450_REG_LDO3CTRL,
631 .enable_mask = LDO3_EN_MASK,
632 .owner = THIS_MODULE,
633 },
634 },
635 {
636 .desc = {
637 .name = "ldo4",
638 .of_match = of_match_ptr("LDO4"),
639 .regulators_node = of_match_ptr("regulators"),
640 .id = PCA9450_LDO4,
641 .ops = &pca9450_ldo_regulator_ops,
642 .type = REGULATOR_VOLTAGE,
643 .n_voltages = PCA9450_LDO4_VOLTAGE_NUM,
644 .linear_ranges = pca9450_ldo34_volts,
645 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
646 .vsel_reg = PCA9450_REG_LDO4CTRL,
647 .vsel_mask = LDO4OUT_MASK,
648 .enable_reg = PCA9450_REG_LDO4CTRL,
649 .enable_mask = LDO4_EN_MASK,
650 .owner = THIS_MODULE,
651 },
652 },
653 {
654 .desc = {
655 .name = "ldo5",
656 .of_match = of_match_ptr("LDO5"),
657 .regulators_node = of_match_ptr("regulators"),
658 .id = PCA9450_LDO5,
659 .ops = &pca9450_ldo_regulator_ops,
660 .type = REGULATOR_VOLTAGE,
661 .n_voltages = PCA9450_LDO5_VOLTAGE_NUM,
662 .linear_ranges = pca9450_ldo5_volts,
663 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts),
664 .vsel_reg = PCA9450_REG_LDO5CTRL_H,
665 .vsel_mask = LDO5HOUT_MASK,
666 .enable_reg = PCA9450_REG_LDO5CTRL_H,
667 .enable_mask = LDO5H_EN_MASK,
668 .owner = THIS_MODULE,
669 },
670 },
671};
672
673static const struct pca9450_regulator_desc pca9451a_regulators[] = {
674 {
675 .desc = {
676 .name = "buck1",
677 .of_match = of_match_ptr("BUCK1"),
678 .regulators_node = of_match_ptr("regulators"),
679 .id = PCA9450_BUCK1,
680 .ops = &pca9450_dvs_buck_regulator_ops,
681 .type = REGULATOR_VOLTAGE,
682 .n_voltages = PCA9450_BUCK1_VOLTAGE_NUM,
683 .linear_ranges = pca9451a_dvs_buck_volts,
684 .n_linear_ranges = ARRAY_SIZE(pca9451a_dvs_buck_volts),
685 .vsel_reg = PCA9450_REG_BUCK1OUT_DVS0,
686 .vsel_mask = BUCK1OUT_DVS0_MASK,
687 .enable_reg = PCA9450_REG_BUCK1CTRL,
688 .enable_mask = BUCK1_ENMODE_MASK,
689 .enable_val = BUCK_ENMODE_ONREQ,
690 .ramp_mask = BUCK1_RAMP_MASK,
691 .ramp_delay_table = pca9450_dvs_buck_ramp_table,
692 .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
693 .owner = THIS_MODULE,
694 .of_parse_cb = pca9450_set_dvs_levels,
695 },
696 .dvs = {
697 .run_reg = PCA9450_REG_BUCK1OUT_DVS0,
698 .run_mask = BUCK1OUT_DVS0_MASK,
699 .standby_reg = PCA9450_REG_BUCK1OUT_DVS1,
700 .standby_mask = BUCK1OUT_DVS1_MASK,
701 },
702 },
703 {
704 .desc = {
705 .name = "buck2",
706 .of_match = of_match_ptr("BUCK2"),
707 .regulators_node = of_match_ptr("regulators"),
708 .id = PCA9450_BUCK2,
709 .ops = &pca9450_dvs_buck_regulator_ops,
710 .type = REGULATOR_VOLTAGE,
711 .n_voltages = PCA9450_BUCK2_VOLTAGE_NUM,
712 .linear_ranges = pca9450_dvs_buck_volts,
713 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
714 .vsel_reg = PCA9450_REG_BUCK2OUT_DVS0,
715 .vsel_mask = BUCK2OUT_DVS0_MASK,
716 .enable_reg = PCA9450_REG_BUCK2CTRL,
717 .enable_mask = BUCK2_ENMODE_MASK,
718 .enable_val = BUCK_ENMODE_ONREQ_STBYREQ,
719 .ramp_mask = BUCK2_RAMP_MASK,
720 .ramp_delay_table = pca9450_dvs_buck_ramp_table,
721 .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
722 .owner = THIS_MODULE,
723 .of_parse_cb = pca9450_set_dvs_levels,
724 },
725 .dvs = {
726 .run_reg = PCA9450_REG_BUCK2OUT_DVS0,
727 .run_mask = BUCK2OUT_DVS0_MASK,
728 .standby_reg = PCA9450_REG_BUCK2OUT_DVS1,
729 .standby_mask = BUCK2OUT_DVS1_MASK,
730 },
731 },
732 {
733 .desc = {
734 .name = "buck4",
735 .of_match = of_match_ptr("BUCK4"),
736 .regulators_node = of_match_ptr("regulators"),
737 .id = PCA9450_BUCK4,
738 .ops = &pca9450_buck_regulator_ops,
739 .type = REGULATOR_VOLTAGE,
740 .n_voltages = PCA9450_BUCK4_VOLTAGE_NUM,
741 .linear_ranges = pca9450_buck_volts,
742 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
743 .vsel_reg = PCA9450_REG_BUCK4OUT,
744 .vsel_mask = BUCK4OUT_MASK,
745 .enable_reg = PCA9450_REG_BUCK4CTRL,
746 .enable_mask = BUCK4_ENMODE_MASK,
747 .enable_val = BUCK_ENMODE_ONREQ,
748 .owner = THIS_MODULE,
749 },
750 },
751 {
752 .desc = {
753 .name = "buck5",
754 .of_match = of_match_ptr("BUCK5"),
755 .regulators_node = of_match_ptr("regulators"),
756 .id = PCA9450_BUCK5,
757 .ops = &pca9450_buck_regulator_ops,
758 .type = REGULATOR_VOLTAGE,
759 .n_voltages = PCA9450_BUCK5_VOLTAGE_NUM,
760 .linear_ranges = pca9450_buck_volts,
761 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
762 .vsel_reg = PCA9450_REG_BUCK5OUT,
763 .vsel_mask = BUCK5OUT_MASK,
764 .enable_reg = PCA9450_REG_BUCK5CTRL,
765 .enable_mask = BUCK5_ENMODE_MASK,
766 .enable_val = BUCK_ENMODE_ONREQ,
767 .owner = THIS_MODULE,
768 },
769 },
770 {
771 .desc = {
772 .name = "buck6",
773 .of_match = of_match_ptr("BUCK6"),
774 .regulators_node = of_match_ptr("regulators"),
775 .id = PCA9450_BUCK6,
776 .ops = &pca9450_buck_regulator_ops,
777 .type = REGULATOR_VOLTAGE,
778 .n_voltages = PCA9450_BUCK6_VOLTAGE_NUM,
779 .linear_ranges = pca9450_buck_volts,
780 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
781 .vsel_reg = PCA9450_REG_BUCK6OUT,
782 .vsel_mask = BUCK6OUT_MASK,
783 .enable_reg = PCA9450_REG_BUCK6CTRL,
784 .enable_mask = BUCK6_ENMODE_MASK,
785 .enable_val = BUCK_ENMODE_ONREQ,
786 .owner = THIS_MODULE,
787 },
788 },
789 {
790 .desc = {
791 .name = "ldo1",
792 .of_match = of_match_ptr("LDO1"),
793 .regulators_node = of_match_ptr("regulators"),
794 .id = PCA9450_LDO1,
795 .ops = &pca9450_ldo_regulator_ops,
796 .type = REGULATOR_VOLTAGE,
797 .n_voltages = PCA9450_LDO1_VOLTAGE_NUM,
798 .linear_ranges = pca9450_ldo1_volts,
799 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts),
800 .vsel_reg = PCA9450_REG_LDO1CTRL,
801 .vsel_mask = LDO1OUT_MASK,
802 .enable_reg = PCA9450_REG_LDO1CTRL,
803 .enable_mask = LDO1_EN_MASK,
804 .owner = THIS_MODULE,
805 },
806 },
807 {
808 .desc = {
809 .name = "ldo4",
810 .of_match = of_match_ptr("LDO4"),
811 .regulators_node = of_match_ptr("regulators"),
812 .id = PCA9450_LDO4,
813 .ops = &pca9450_ldo_regulator_ops,
814 .type = REGULATOR_VOLTAGE,
815 .n_voltages = PCA9450_LDO4_VOLTAGE_NUM,
816 .linear_ranges = pca9450_ldo34_volts,
817 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
818 .vsel_reg = PCA9450_REG_LDO4CTRL,
819 .vsel_mask = LDO4OUT_MASK,
820 .enable_reg = PCA9450_REG_LDO4CTRL,
821 .enable_mask = LDO4_EN_MASK,
822 .owner = THIS_MODULE,
823 },
824 },
825 {
826 .desc = {
827 .name = "ldo5",
828 .of_match = of_match_ptr("LDO5"),
829 .regulators_node = of_match_ptr("regulators"),
830 .id = PCA9450_LDO5,
831 .ops = &pca9450_ldo_regulator_ops,
832 .type = REGULATOR_VOLTAGE,
833 .n_voltages = PCA9450_LDO5_VOLTAGE_NUM,
834 .linear_ranges = pca9450_ldo5_volts,
835 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts),
836 .vsel_reg = PCA9450_REG_LDO5CTRL_H,
837 .vsel_mask = LDO5HOUT_MASK,
838 .enable_reg = PCA9450_REG_LDO5CTRL_H,
839 .enable_mask = LDO5H_EN_MASK,
840 .owner = THIS_MODULE,
841 },
842 },
843};
844
845static irqreturn_t pca9450_irq_handler(int irq, void *data)
846{
847 struct pca9450 *pca9450 = data;
848 struct regmap *regmap = pca9450->regmap;
849 unsigned int status;
850 int ret;
851
852 ret = regmap_read(regmap, PCA9450_REG_INT1, &status);
853 if (ret < 0) {
854 dev_err(pca9450->dev,
855 "Failed to read INT1(%d)\n", ret);
856 return IRQ_NONE;
857 }
858
859 if (status & IRQ_PWRON)
860 dev_warn(pca9450->dev, "PWRON interrupt.\n");
861
862 if (status & IRQ_WDOGB)
863 dev_warn(pca9450->dev, "WDOGB interrupt.\n");
864
865 if (status & IRQ_VR_FLT1)
866 dev_warn(pca9450->dev, "VRFLT1 interrupt.\n");
867
868 if (status & IRQ_VR_FLT2)
869 dev_warn(pca9450->dev, "VRFLT2 interrupt.\n");
870
871 if (status & IRQ_LOWVSYS)
872 dev_warn(pca9450->dev, "LOWVSYS interrupt.\n");
873
874 if (status & IRQ_THERM_105)
875 dev_warn(pca9450->dev, "IRQ_THERM_105 interrupt.\n");
876
877 if (status & IRQ_THERM_125)
878 dev_warn(pca9450->dev, "IRQ_THERM_125 interrupt.\n");
879
880 return IRQ_HANDLED;
881}
882
883static int pca9450_i2c_probe(struct i2c_client *i2c)
884{
885 enum pca9450_chip_type type = (unsigned int)(uintptr_t)
886 of_device_get_match_data(&i2c->dev);
887 const struct pca9450_regulator_desc *regulator_desc;
888 struct regulator_config config = { };
889 struct pca9450 *pca9450;
890 unsigned int device_id, i;
891 unsigned int reset_ctrl;
892 int ret;
893
894 pca9450 = devm_kzalloc(&i2c->dev, sizeof(struct pca9450), GFP_KERNEL);
895 if (!pca9450)
896 return -ENOMEM;
897
898 switch (type) {
899 case PCA9450_TYPE_PCA9450A:
900 regulator_desc = pca9450a_regulators;
901 pca9450->rcnt = ARRAY_SIZE(pca9450a_regulators);
902 break;
903 case PCA9450_TYPE_PCA9450BC:
904 regulator_desc = pca9450bc_regulators;
905 pca9450->rcnt = ARRAY_SIZE(pca9450bc_regulators);
906 break;
907 case PCA9450_TYPE_PCA9451A:
908 regulator_desc = pca9451a_regulators;
909 pca9450->rcnt = ARRAY_SIZE(pca9451a_regulators);
910 break;
911 default:
912 dev_err(&i2c->dev, "Unknown device type");
913 return -EINVAL;
914 }
915
916 pca9450->irq = i2c->irq;
917 pca9450->type = type;
918 pca9450->dev = &i2c->dev;
919
920 dev_set_drvdata(&i2c->dev, pca9450);
921
922 pca9450->regmap = devm_regmap_init_i2c(i2c,
923 &pca9450_regmap_config);
924 if (IS_ERR(pca9450->regmap)) {
925 dev_err(&i2c->dev, "regmap initialization failed\n");
926 return PTR_ERR(pca9450->regmap);
927 }
928
929 ret = regmap_read(pca9450->regmap, PCA9450_REG_DEV_ID, &device_id);
930 if (ret) {
931 dev_err(&i2c->dev, "Read device id error\n");
932 return ret;
933 }
934
935 /* Check your board and dts for match the right pmic */
936 if (((device_id >> 4) != 0x1 && type == PCA9450_TYPE_PCA9450A) ||
937 ((device_id >> 4) != 0x3 && type == PCA9450_TYPE_PCA9450BC) ||
938 ((device_id >> 4) != 0x9 && type == PCA9450_TYPE_PCA9451A)) {
939 dev_err(&i2c->dev, "Device id(%x) mismatched\n",
940 device_id >> 4);
941 return -EINVAL;
942 }
943
944 for (i = 0; i < pca9450->rcnt; i++) {
945 const struct regulator_desc *desc;
946 struct regulator_dev *rdev;
947 const struct pca9450_regulator_desc *r;
948
949 r = ®ulator_desc[i];
950 desc = &r->desc;
951
952 config.regmap = pca9450->regmap;
953 config.dev = pca9450->dev;
954
955 rdev = devm_regulator_register(pca9450->dev, desc, &config);
956 if (IS_ERR(rdev)) {
957 ret = PTR_ERR(rdev);
958 dev_err(pca9450->dev,
959 "Failed to register regulator(%s): %d\n",
960 desc->name, ret);
961 return ret;
962 }
963 }
964
965 if (pca9450->irq) {
966 ret = devm_request_threaded_irq(pca9450->dev, pca9450->irq, NULL,
967 pca9450_irq_handler,
968 (IRQF_TRIGGER_FALLING | IRQF_ONESHOT),
969 "pca9450-irq", pca9450);
970 if (ret != 0) {
971 dev_err(pca9450->dev, "Failed to request IRQ: %d\n",
972 pca9450->irq);
973 return ret;
974 }
975 /* Unmask all interrupt except PWRON/WDOG/RSVD */
976 ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_INT1_MSK,
977 IRQ_VR_FLT1 | IRQ_VR_FLT2 | IRQ_LOWVSYS |
978 IRQ_THERM_105 | IRQ_THERM_125,
979 IRQ_PWRON | IRQ_WDOGB | IRQ_RSVD);
980 if (ret) {
981 dev_err(&i2c->dev, "Unmask irq error\n");
982 return ret;
983 }
984 }
985
986 /* Clear PRESET_EN bit in BUCK123_DVS to use DVS registers */
987 ret = regmap_clear_bits(pca9450->regmap, PCA9450_REG_BUCK123_DVS,
988 BUCK123_PRESET_EN);
989 if (ret) {
990 dev_err(&i2c->dev, "Failed to clear PRESET_EN bit: %d\n", ret);
991 return ret;
992 }
993
994 if (of_property_read_bool(i2c->dev.of_node, "nxp,wdog_b-warm-reset"))
995 reset_ctrl = WDOG_B_CFG_WARM;
996 else
997 reset_ctrl = WDOG_B_CFG_COLD_LDO12;
998
999 /* Set reset behavior on assertion of WDOG_B signal */
1000 ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_RESET_CTRL,
1001 WDOG_B_CFG_MASK, reset_ctrl);
1002 if (ret) {
1003 dev_err(&i2c->dev, "Failed to set WDOG_B reset behavior\n");
1004 return ret;
1005 }
1006
1007 if (of_property_read_bool(i2c->dev.of_node, "nxp,i2c-lt-enable")) {
1008 /* Enable I2C Level Translator */
1009 ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_CONFIG2,
1010 I2C_LT_MASK, I2C_LT_ON_STANDBY_RUN);
1011 if (ret) {
1012 dev_err(&i2c->dev,
1013 "Failed to enable I2C level translator\n");
1014 return ret;
1015 }
1016 }
1017
1018 /*
1019 * The driver uses the LDO5CTRL_H register to control the LDO5 regulator.
1020 * This is only valid if the SD_VSEL input of the PMIC is high. Let's
1021 * check if the pin is available as GPIO and set it to high.
1022 */
1023 pca9450->sd_vsel_gpio = gpiod_get_optional(pca9450->dev, "sd-vsel", GPIOD_OUT_HIGH);
1024
1025 if (IS_ERR(pca9450->sd_vsel_gpio)) {
1026 dev_err(&i2c->dev, "Failed to get SD_VSEL GPIO\n");
1027 return PTR_ERR(pca9450->sd_vsel_gpio);
1028 }
1029
1030 dev_info(&i2c->dev, "%s probed.\n",
1031 type == PCA9450_TYPE_PCA9450A ? "pca9450a" :
1032 (type == PCA9450_TYPE_PCA9451A ? "pca9451a" : "pca9450bc"));
1033
1034 return 0;
1035}
1036
1037static const struct of_device_id pca9450_of_match[] = {
1038 {
1039 .compatible = "nxp,pca9450a",
1040 .data = (void *)PCA9450_TYPE_PCA9450A,
1041 },
1042 {
1043 .compatible = "nxp,pca9450b",
1044 .data = (void *)PCA9450_TYPE_PCA9450BC,
1045 },
1046 {
1047 .compatible = "nxp,pca9450c",
1048 .data = (void *)PCA9450_TYPE_PCA9450BC,
1049 },
1050 {
1051 .compatible = "nxp,pca9451a",
1052 .data = (void *)PCA9450_TYPE_PCA9451A,
1053 },
1054 { }
1055};
1056MODULE_DEVICE_TABLE(of, pca9450_of_match);
1057
1058static struct i2c_driver pca9450_i2c_driver = {
1059 .driver = {
1060 .name = "nxp-pca9450",
1061 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
1062 .of_match_table = pca9450_of_match,
1063 },
1064 .probe = pca9450_i2c_probe,
1065};
1066
1067module_i2c_driver(pca9450_i2c_driver);
1068
1069MODULE_AUTHOR("Robin Gong <yibin.gong@nxp.com>");
1070MODULE_DESCRIPTION("NXP PCA9450 Power Management IC driver");
1071MODULE_LICENSE("GPL");