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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/of_device.h>
15#include <linux/platform_device.h>
16#include <linux/regulator/driver.h>
17#include <linux/regulator/machine.h>
18#include <linux/regulator/of_regulator.h>
19#include <linux/regulator/pca9450.h>
20
21struct pc9450_dvs_config {
22 unsigned int run_reg; /* dvs0 */
23 unsigned int run_mask;
24 unsigned int standby_reg; /* dvs1 */
25 unsigned int standby_mask;
26};
27
28struct pca9450_regulator_desc {
29 struct regulator_desc desc;
30 const struct pc9450_dvs_config dvs;
31};
32
33struct pca9450 {
34 struct device *dev;
35 struct regmap *regmap;
36 struct gpio_desc *sd_vsel_gpio;
37 enum pca9450_chip_type type;
38 unsigned int rcnt;
39 int irq;
40};
41
42static const struct regmap_range pca9450_status_range = {
43 .range_min = PCA9450_REG_INT1,
44 .range_max = PCA9450_REG_PWRON_STAT,
45};
46
47static const struct regmap_access_table pca9450_volatile_regs = {
48 .yes_ranges = &pca9450_status_range,
49 .n_yes_ranges = 1,
50};
51
52static const struct regmap_config pca9450_regmap_config = {
53 .reg_bits = 8,
54 .val_bits = 8,
55 .volatile_table = &pca9450_volatile_regs,
56 .max_register = PCA9450_MAX_REGISTER - 1,
57 .cache_type = REGCACHE_RBTREE,
58};
59
60/*
61 * BUCK1/2/3
62 * BUCK1RAM[1:0] BUCK1 DVS ramp rate setting
63 * 00: 25mV/1usec
64 * 01: 25mV/2usec
65 * 10: 25mV/4usec
66 * 11: 25mV/8usec
67 */
68static const unsigned int pca9450_dvs_buck_ramp_table[] = {
69 25000, 12500, 6250, 3125
70};
71
72static const struct regulator_ops pca9450_dvs_buck_regulator_ops = {
73 .enable = regulator_enable_regmap,
74 .disable = regulator_disable_regmap,
75 .is_enabled = regulator_is_enabled_regmap,
76 .list_voltage = regulator_list_voltage_linear_range,
77 .set_voltage_sel = regulator_set_voltage_sel_regmap,
78 .get_voltage_sel = regulator_get_voltage_sel_regmap,
79 .set_voltage_time_sel = regulator_set_voltage_time_sel,
80 .set_ramp_delay = regulator_set_ramp_delay_regmap,
81};
82
83static const struct regulator_ops pca9450_buck_regulator_ops = {
84 .enable = regulator_enable_regmap,
85 .disable = regulator_disable_regmap,
86 .is_enabled = regulator_is_enabled_regmap,
87 .list_voltage = regulator_list_voltage_linear_range,
88 .set_voltage_sel = regulator_set_voltage_sel_regmap,
89 .get_voltage_sel = regulator_get_voltage_sel_regmap,
90 .set_voltage_time_sel = regulator_set_voltage_time_sel,
91};
92
93static const struct regulator_ops pca9450_ldo_regulator_ops = {
94 .enable = regulator_enable_regmap,
95 .disable = regulator_disable_regmap,
96 .is_enabled = regulator_is_enabled_regmap,
97 .list_voltage = regulator_list_voltage_linear_range,
98 .set_voltage_sel = regulator_set_voltage_sel_regmap,
99 .get_voltage_sel = regulator_get_voltage_sel_regmap,
100};
101
102/*
103 * BUCK1/2/3
104 * 0.60 to 2.1875V (12.5mV step)
105 */
106static const struct linear_range pca9450_dvs_buck_volts[] = {
107 REGULATOR_LINEAR_RANGE(600000, 0x00, 0x7F, 12500),
108};
109
110/*
111 * BUCK4/5/6
112 * 0.6V to 3.4V (25mV step)
113 */
114static const struct linear_range pca9450_buck_volts[] = {
115 REGULATOR_LINEAR_RANGE(600000, 0x00, 0x70, 25000),
116 REGULATOR_LINEAR_RANGE(3400000, 0x71, 0x7F, 0),
117};
118
119/*
120 * LDO1
121 * 1.6 to 3.3V ()
122 */
123static const struct linear_range pca9450_ldo1_volts[] = {
124 REGULATOR_LINEAR_RANGE(1600000, 0x00, 0x03, 100000),
125 REGULATOR_LINEAR_RANGE(3000000, 0x04, 0x07, 100000),
126};
127
128/*
129 * LDO2
130 * 0.8 to 1.15V (50mV step)
131 */
132static const struct linear_range pca9450_ldo2_volts[] = {
133 REGULATOR_LINEAR_RANGE(800000, 0x00, 0x07, 50000),
134};
135
136/*
137 * LDO3/4
138 * 0.8 to 3.3V (100mV step)
139 */
140static const struct linear_range pca9450_ldo34_volts[] = {
141 REGULATOR_LINEAR_RANGE(800000, 0x00, 0x19, 100000),
142 REGULATOR_LINEAR_RANGE(3300000, 0x1A, 0x1F, 0),
143};
144
145/*
146 * LDO5
147 * 1.8 to 3.3V (100mV step)
148 */
149static const struct linear_range pca9450_ldo5_volts[] = {
150 REGULATOR_LINEAR_RANGE(1800000, 0x00, 0x0F, 100000),
151};
152
153static int buck_set_dvs(const struct regulator_desc *desc,
154 struct device_node *np, struct regmap *regmap,
155 char *prop, unsigned int reg, unsigned int mask)
156{
157 int ret, i;
158 uint32_t uv;
159
160 ret = of_property_read_u32(np, prop, &uv);
161 if (ret == -EINVAL)
162 return 0;
163 else if (ret)
164 return ret;
165
166 for (i = 0; i < desc->n_voltages; i++) {
167 ret = regulator_desc_list_voltage_linear_range(desc, i);
168 if (ret < 0)
169 continue;
170 if (ret == uv) {
171 i <<= ffs(desc->vsel_mask) - 1;
172 ret = regmap_update_bits(regmap, reg, mask, i);
173 break;
174 }
175 }
176
177 if (ret == 0) {
178 struct pca9450_regulator_desc *regulator = container_of(desc,
179 struct pca9450_regulator_desc, desc);
180
181 /* Enable DVS control through PMIC_STBY_REQ for this BUCK */
182 ret = regmap_update_bits(regmap, regulator->desc.enable_reg,
183 BUCK1_DVS_CTRL, BUCK1_DVS_CTRL);
184 }
185 return ret;
186}
187
188static int pca9450_set_dvs_levels(struct device_node *np,
189 const struct regulator_desc *desc,
190 struct regulator_config *cfg)
191{
192 struct pca9450_regulator_desc *data = container_of(desc,
193 struct pca9450_regulator_desc, desc);
194 const struct pc9450_dvs_config *dvs = &data->dvs;
195 unsigned int reg, mask;
196 char *prop;
197 int i, ret = 0;
198
199 for (i = 0; i < PCA9450_DVS_LEVEL_MAX; i++) {
200 switch (i) {
201 case PCA9450_DVS_LEVEL_RUN:
202 prop = "nxp,dvs-run-voltage";
203 reg = dvs->run_reg;
204 mask = dvs->run_mask;
205 break;
206 case PCA9450_DVS_LEVEL_STANDBY:
207 prop = "nxp,dvs-standby-voltage";
208 reg = dvs->standby_reg;
209 mask = dvs->standby_mask;
210 break;
211 default:
212 return -EINVAL;
213 }
214
215 ret = buck_set_dvs(desc, np, cfg->regmap, prop, reg, mask);
216 if (ret)
217 break;
218 }
219
220 return ret;
221}
222
223static const struct pca9450_regulator_desc pca9450a_regulators[] = {
224 {
225 .desc = {
226 .name = "buck1",
227 .of_match = of_match_ptr("BUCK1"),
228 .regulators_node = of_match_ptr("regulators"),
229 .id = PCA9450_BUCK1,
230 .ops = &pca9450_dvs_buck_regulator_ops,
231 .type = REGULATOR_VOLTAGE,
232 .n_voltages = PCA9450_BUCK1_VOLTAGE_NUM,
233 .linear_ranges = pca9450_dvs_buck_volts,
234 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
235 .vsel_reg = PCA9450_REG_BUCK1OUT_DVS0,
236 .vsel_mask = BUCK1OUT_DVS0_MASK,
237 .enable_reg = PCA9450_REG_BUCK1CTRL,
238 .enable_mask = BUCK1_ENMODE_MASK,
239 .ramp_reg = PCA9450_REG_BUCK1CTRL,
240 .ramp_mask = BUCK1_RAMP_MASK,
241 .ramp_delay_table = pca9450_dvs_buck_ramp_table,
242 .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
243 .owner = THIS_MODULE,
244 .of_parse_cb = pca9450_set_dvs_levels,
245 },
246 .dvs = {
247 .run_reg = PCA9450_REG_BUCK1OUT_DVS0,
248 .run_mask = BUCK1OUT_DVS0_MASK,
249 .standby_reg = PCA9450_REG_BUCK1OUT_DVS1,
250 .standby_mask = BUCK1OUT_DVS1_MASK,
251 },
252 },
253 {
254 .desc = {
255 .name = "buck2",
256 .of_match = of_match_ptr("BUCK2"),
257 .regulators_node = of_match_ptr("regulators"),
258 .id = PCA9450_BUCK2,
259 .ops = &pca9450_dvs_buck_regulator_ops,
260 .type = REGULATOR_VOLTAGE,
261 .n_voltages = PCA9450_BUCK2_VOLTAGE_NUM,
262 .linear_ranges = pca9450_dvs_buck_volts,
263 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
264 .vsel_reg = PCA9450_REG_BUCK2OUT_DVS0,
265 .vsel_mask = BUCK2OUT_DVS0_MASK,
266 .enable_reg = PCA9450_REG_BUCK2CTRL,
267 .enable_mask = BUCK1_ENMODE_MASK,
268 .ramp_reg = PCA9450_REG_BUCK2CTRL,
269 .ramp_mask = BUCK2_RAMP_MASK,
270 .ramp_delay_table = pca9450_dvs_buck_ramp_table,
271 .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
272 .owner = THIS_MODULE,
273 .of_parse_cb = pca9450_set_dvs_levels,
274 },
275 .dvs = {
276 .run_reg = PCA9450_REG_BUCK2OUT_DVS0,
277 .run_mask = BUCK2OUT_DVS0_MASK,
278 .standby_reg = PCA9450_REG_BUCK2OUT_DVS1,
279 .standby_mask = BUCK2OUT_DVS1_MASK,
280 },
281 },
282 {
283 .desc = {
284 .name = "buck3",
285 .of_match = of_match_ptr("BUCK3"),
286 .regulators_node = of_match_ptr("regulators"),
287 .id = PCA9450_BUCK3,
288 .ops = &pca9450_dvs_buck_regulator_ops,
289 .type = REGULATOR_VOLTAGE,
290 .n_voltages = PCA9450_BUCK3_VOLTAGE_NUM,
291 .linear_ranges = pca9450_dvs_buck_volts,
292 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
293 .vsel_reg = PCA9450_REG_BUCK3OUT_DVS0,
294 .vsel_mask = BUCK3OUT_DVS0_MASK,
295 .enable_reg = PCA9450_REG_BUCK3CTRL,
296 .enable_mask = BUCK3_ENMODE_MASK,
297 .ramp_reg = PCA9450_REG_BUCK3CTRL,
298 .ramp_mask = BUCK3_RAMP_MASK,
299 .ramp_delay_table = pca9450_dvs_buck_ramp_table,
300 .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
301 .owner = THIS_MODULE,
302 .of_parse_cb = pca9450_set_dvs_levels,
303 },
304 .dvs = {
305 .run_reg = PCA9450_REG_BUCK3OUT_DVS0,
306 .run_mask = BUCK3OUT_DVS0_MASK,
307 .standby_reg = PCA9450_REG_BUCK3OUT_DVS1,
308 .standby_mask = BUCK3OUT_DVS1_MASK,
309 },
310 },
311 {
312 .desc = {
313 .name = "buck4",
314 .of_match = of_match_ptr("BUCK4"),
315 .regulators_node = of_match_ptr("regulators"),
316 .id = PCA9450_BUCK4,
317 .ops = &pca9450_buck_regulator_ops,
318 .type = REGULATOR_VOLTAGE,
319 .n_voltages = PCA9450_BUCK4_VOLTAGE_NUM,
320 .linear_ranges = pca9450_buck_volts,
321 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
322 .vsel_reg = PCA9450_REG_BUCK4OUT,
323 .vsel_mask = BUCK4OUT_MASK,
324 .enable_reg = PCA9450_REG_BUCK4CTRL,
325 .enable_mask = BUCK4_ENMODE_MASK,
326 .owner = THIS_MODULE,
327 },
328 },
329 {
330 .desc = {
331 .name = "buck5",
332 .of_match = of_match_ptr("BUCK5"),
333 .regulators_node = of_match_ptr("regulators"),
334 .id = PCA9450_BUCK5,
335 .ops = &pca9450_buck_regulator_ops,
336 .type = REGULATOR_VOLTAGE,
337 .n_voltages = PCA9450_BUCK5_VOLTAGE_NUM,
338 .linear_ranges = pca9450_buck_volts,
339 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
340 .vsel_reg = PCA9450_REG_BUCK5OUT,
341 .vsel_mask = BUCK5OUT_MASK,
342 .enable_reg = PCA9450_REG_BUCK5CTRL,
343 .enable_mask = BUCK5_ENMODE_MASK,
344 .owner = THIS_MODULE,
345 },
346 },
347 {
348 .desc = {
349 .name = "buck6",
350 .of_match = of_match_ptr("BUCK6"),
351 .regulators_node = of_match_ptr("regulators"),
352 .id = PCA9450_BUCK6,
353 .ops = &pca9450_buck_regulator_ops,
354 .type = REGULATOR_VOLTAGE,
355 .n_voltages = PCA9450_BUCK6_VOLTAGE_NUM,
356 .linear_ranges = pca9450_buck_volts,
357 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
358 .vsel_reg = PCA9450_REG_BUCK6OUT,
359 .vsel_mask = BUCK6OUT_MASK,
360 .enable_reg = PCA9450_REG_BUCK6CTRL,
361 .enable_mask = BUCK6_ENMODE_MASK,
362 .owner = THIS_MODULE,
363 },
364 },
365 {
366 .desc = {
367 .name = "ldo1",
368 .of_match = of_match_ptr("LDO1"),
369 .regulators_node = of_match_ptr("regulators"),
370 .id = PCA9450_LDO1,
371 .ops = &pca9450_ldo_regulator_ops,
372 .type = REGULATOR_VOLTAGE,
373 .n_voltages = PCA9450_LDO1_VOLTAGE_NUM,
374 .linear_ranges = pca9450_ldo1_volts,
375 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts),
376 .vsel_reg = PCA9450_REG_LDO1CTRL,
377 .vsel_mask = LDO1OUT_MASK,
378 .enable_reg = PCA9450_REG_LDO1CTRL,
379 .enable_mask = LDO1_EN_MASK,
380 .owner = THIS_MODULE,
381 },
382 },
383 {
384 .desc = {
385 .name = "ldo2",
386 .of_match = of_match_ptr("LDO2"),
387 .regulators_node = of_match_ptr("regulators"),
388 .id = PCA9450_LDO2,
389 .ops = &pca9450_ldo_regulator_ops,
390 .type = REGULATOR_VOLTAGE,
391 .n_voltages = PCA9450_LDO2_VOLTAGE_NUM,
392 .linear_ranges = pca9450_ldo2_volts,
393 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo2_volts),
394 .vsel_reg = PCA9450_REG_LDO2CTRL,
395 .vsel_mask = LDO2OUT_MASK,
396 .enable_reg = PCA9450_REG_LDO2CTRL,
397 .enable_mask = LDO2_EN_MASK,
398 .owner = THIS_MODULE,
399 },
400 },
401 {
402 .desc = {
403 .name = "ldo3",
404 .of_match = of_match_ptr("LDO3"),
405 .regulators_node = of_match_ptr("regulators"),
406 .id = PCA9450_LDO3,
407 .ops = &pca9450_ldo_regulator_ops,
408 .type = REGULATOR_VOLTAGE,
409 .n_voltages = PCA9450_LDO3_VOLTAGE_NUM,
410 .linear_ranges = pca9450_ldo34_volts,
411 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
412 .vsel_reg = PCA9450_REG_LDO3CTRL,
413 .vsel_mask = LDO3OUT_MASK,
414 .enable_reg = PCA9450_REG_LDO3CTRL,
415 .enable_mask = LDO3_EN_MASK,
416 .owner = THIS_MODULE,
417 },
418 },
419 {
420 .desc = {
421 .name = "ldo4",
422 .of_match = of_match_ptr("LDO4"),
423 .regulators_node = of_match_ptr("regulators"),
424 .id = PCA9450_LDO4,
425 .ops = &pca9450_ldo_regulator_ops,
426 .type = REGULATOR_VOLTAGE,
427 .n_voltages = PCA9450_LDO4_VOLTAGE_NUM,
428 .linear_ranges = pca9450_ldo34_volts,
429 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
430 .vsel_reg = PCA9450_REG_LDO4CTRL,
431 .vsel_mask = LDO4OUT_MASK,
432 .enable_reg = PCA9450_REG_LDO4CTRL,
433 .enable_mask = LDO4_EN_MASK,
434 .owner = THIS_MODULE,
435 },
436 },
437 {
438 .desc = {
439 .name = "ldo5",
440 .of_match = of_match_ptr("LDO5"),
441 .regulators_node = of_match_ptr("regulators"),
442 .id = PCA9450_LDO5,
443 .ops = &pca9450_ldo_regulator_ops,
444 .type = REGULATOR_VOLTAGE,
445 .n_voltages = PCA9450_LDO5_VOLTAGE_NUM,
446 .linear_ranges = pca9450_ldo5_volts,
447 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts),
448 .vsel_reg = PCA9450_REG_LDO5CTRL_H,
449 .vsel_mask = LDO5HOUT_MASK,
450 .enable_reg = PCA9450_REG_LDO5CTRL_H,
451 .enable_mask = LDO5H_EN_MASK,
452 .owner = THIS_MODULE,
453 },
454 },
455};
456
457/*
458 * Buck3 removed on PCA9450B and connected with Buck1 internal for dual phase
459 * on PCA9450C as no Buck3.
460 */
461static const struct pca9450_regulator_desc pca9450bc_regulators[] = {
462 {
463 .desc = {
464 .name = "buck1",
465 .of_match = of_match_ptr("BUCK1"),
466 .regulators_node = of_match_ptr("regulators"),
467 .id = PCA9450_BUCK1,
468 .ops = &pca9450_dvs_buck_regulator_ops,
469 .type = REGULATOR_VOLTAGE,
470 .n_voltages = PCA9450_BUCK1_VOLTAGE_NUM,
471 .linear_ranges = pca9450_dvs_buck_volts,
472 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
473 .vsel_reg = PCA9450_REG_BUCK1OUT_DVS0,
474 .vsel_mask = BUCK1OUT_DVS0_MASK,
475 .enable_reg = PCA9450_REG_BUCK1CTRL,
476 .enable_mask = BUCK1_ENMODE_MASK,
477 .ramp_reg = PCA9450_REG_BUCK1CTRL,
478 .ramp_mask = BUCK1_RAMP_MASK,
479 .ramp_delay_table = pca9450_dvs_buck_ramp_table,
480 .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
481 .owner = THIS_MODULE,
482 .of_parse_cb = pca9450_set_dvs_levels,
483 },
484 .dvs = {
485 .run_reg = PCA9450_REG_BUCK1OUT_DVS0,
486 .run_mask = BUCK1OUT_DVS0_MASK,
487 .standby_reg = PCA9450_REG_BUCK1OUT_DVS1,
488 .standby_mask = BUCK1OUT_DVS1_MASK,
489 },
490 },
491 {
492 .desc = {
493 .name = "buck2",
494 .of_match = of_match_ptr("BUCK2"),
495 .regulators_node = of_match_ptr("regulators"),
496 .id = PCA9450_BUCK2,
497 .ops = &pca9450_dvs_buck_regulator_ops,
498 .type = REGULATOR_VOLTAGE,
499 .n_voltages = PCA9450_BUCK2_VOLTAGE_NUM,
500 .linear_ranges = pca9450_dvs_buck_volts,
501 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
502 .vsel_reg = PCA9450_REG_BUCK2OUT_DVS0,
503 .vsel_mask = BUCK2OUT_DVS0_MASK,
504 .enable_reg = PCA9450_REG_BUCK2CTRL,
505 .enable_mask = BUCK1_ENMODE_MASK,
506 .ramp_reg = PCA9450_REG_BUCK2CTRL,
507 .ramp_mask = BUCK2_RAMP_MASK,
508 .ramp_delay_table = pca9450_dvs_buck_ramp_table,
509 .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
510 .owner = THIS_MODULE,
511 .of_parse_cb = pca9450_set_dvs_levels,
512 },
513 .dvs = {
514 .run_reg = PCA9450_REG_BUCK2OUT_DVS0,
515 .run_mask = BUCK2OUT_DVS0_MASK,
516 .standby_reg = PCA9450_REG_BUCK2OUT_DVS1,
517 .standby_mask = BUCK2OUT_DVS1_MASK,
518 },
519 },
520 {
521 .desc = {
522 .name = "buck4",
523 .of_match = of_match_ptr("BUCK4"),
524 .regulators_node = of_match_ptr("regulators"),
525 .id = PCA9450_BUCK4,
526 .ops = &pca9450_buck_regulator_ops,
527 .type = REGULATOR_VOLTAGE,
528 .n_voltages = PCA9450_BUCK4_VOLTAGE_NUM,
529 .linear_ranges = pca9450_buck_volts,
530 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
531 .vsel_reg = PCA9450_REG_BUCK4OUT,
532 .vsel_mask = BUCK4OUT_MASK,
533 .enable_reg = PCA9450_REG_BUCK4CTRL,
534 .enable_mask = BUCK4_ENMODE_MASK,
535 .owner = THIS_MODULE,
536 },
537 },
538 {
539 .desc = {
540 .name = "buck5",
541 .of_match = of_match_ptr("BUCK5"),
542 .regulators_node = of_match_ptr("regulators"),
543 .id = PCA9450_BUCK5,
544 .ops = &pca9450_buck_regulator_ops,
545 .type = REGULATOR_VOLTAGE,
546 .n_voltages = PCA9450_BUCK5_VOLTAGE_NUM,
547 .linear_ranges = pca9450_buck_volts,
548 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
549 .vsel_reg = PCA9450_REG_BUCK5OUT,
550 .vsel_mask = BUCK5OUT_MASK,
551 .enable_reg = PCA9450_REG_BUCK5CTRL,
552 .enable_mask = BUCK5_ENMODE_MASK,
553 .owner = THIS_MODULE,
554 },
555 },
556 {
557 .desc = {
558 .name = "buck6",
559 .of_match = of_match_ptr("BUCK6"),
560 .regulators_node = of_match_ptr("regulators"),
561 .id = PCA9450_BUCK6,
562 .ops = &pca9450_buck_regulator_ops,
563 .type = REGULATOR_VOLTAGE,
564 .n_voltages = PCA9450_BUCK6_VOLTAGE_NUM,
565 .linear_ranges = pca9450_buck_volts,
566 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
567 .vsel_reg = PCA9450_REG_BUCK6OUT,
568 .vsel_mask = BUCK6OUT_MASK,
569 .enable_reg = PCA9450_REG_BUCK6CTRL,
570 .enable_mask = BUCK6_ENMODE_MASK,
571 .owner = THIS_MODULE,
572 },
573 },
574 {
575 .desc = {
576 .name = "ldo1",
577 .of_match = of_match_ptr("LDO1"),
578 .regulators_node = of_match_ptr("regulators"),
579 .id = PCA9450_LDO1,
580 .ops = &pca9450_ldo_regulator_ops,
581 .type = REGULATOR_VOLTAGE,
582 .n_voltages = PCA9450_LDO1_VOLTAGE_NUM,
583 .linear_ranges = pca9450_ldo1_volts,
584 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts),
585 .vsel_reg = PCA9450_REG_LDO1CTRL,
586 .vsel_mask = LDO1OUT_MASK,
587 .enable_reg = PCA9450_REG_LDO1CTRL,
588 .enable_mask = LDO1_EN_MASK,
589 .owner = THIS_MODULE,
590 },
591 },
592 {
593 .desc = {
594 .name = "ldo2",
595 .of_match = of_match_ptr("LDO2"),
596 .regulators_node = of_match_ptr("regulators"),
597 .id = PCA9450_LDO2,
598 .ops = &pca9450_ldo_regulator_ops,
599 .type = REGULATOR_VOLTAGE,
600 .n_voltages = PCA9450_LDO2_VOLTAGE_NUM,
601 .linear_ranges = pca9450_ldo2_volts,
602 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo2_volts),
603 .vsel_reg = PCA9450_REG_LDO2CTRL,
604 .vsel_mask = LDO2OUT_MASK,
605 .enable_reg = PCA9450_REG_LDO2CTRL,
606 .enable_mask = LDO2_EN_MASK,
607 .owner = THIS_MODULE,
608 },
609 },
610 {
611 .desc = {
612 .name = "ldo3",
613 .of_match = of_match_ptr("LDO3"),
614 .regulators_node = of_match_ptr("regulators"),
615 .id = PCA9450_LDO3,
616 .ops = &pca9450_ldo_regulator_ops,
617 .type = REGULATOR_VOLTAGE,
618 .n_voltages = PCA9450_LDO3_VOLTAGE_NUM,
619 .linear_ranges = pca9450_ldo34_volts,
620 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
621 .vsel_reg = PCA9450_REG_LDO3CTRL,
622 .vsel_mask = LDO3OUT_MASK,
623 .enable_reg = PCA9450_REG_LDO3CTRL,
624 .enable_mask = LDO3_EN_MASK,
625 .owner = THIS_MODULE,
626 },
627 },
628 {
629 .desc = {
630 .name = "ldo4",
631 .of_match = of_match_ptr("LDO4"),
632 .regulators_node = of_match_ptr("regulators"),
633 .id = PCA9450_LDO4,
634 .ops = &pca9450_ldo_regulator_ops,
635 .type = REGULATOR_VOLTAGE,
636 .n_voltages = PCA9450_LDO4_VOLTAGE_NUM,
637 .linear_ranges = pca9450_ldo34_volts,
638 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
639 .vsel_reg = PCA9450_REG_LDO4CTRL,
640 .vsel_mask = LDO4OUT_MASK,
641 .enable_reg = PCA9450_REG_LDO4CTRL,
642 .enable_mask = LDO4_EN_MASK,
643 .owner = THIS_MODULE,
644 },
645 },
646 {
647 .desc = {
648 .name = "ldo5",
649 .of_match = of_match_ptr("LDO5"),
650 .regulators_node = of_match_ptr("regulators"),
651 .id = PCA9450_LDO5,
652 .ops = &pca9450_ldo_regulator_ops,
653 .type = REGULATOR_VOLTAGE,
654 .n_voltages = PCA9450_LDO5_VOLTAGE_NUM,
655 .linear_ranges = pca9450_ldo5_volts,
656 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts),
657 .vsel_reg = PCA9450_REG_LDO5CTRL_H,
658 .vsel_mask = LDO5HOUT_MASK,
659 .enable_reg = PCA9450_REG_LDO5CTRL_H,
660 .enable_mask = LDO5H_EN_MASK,
661 .owner = THIS_MODULE,
662 },
663 },
664};
665
666static irqreturn_t pca9450_irq_handler(int irq, void *data)
667{
668 struct pca9450 *pca9450 = data;
669 struct regmap *regmap = pca9450->regmap;
670 unsigned int status;
671 int ret;
672
673 ret = regmap_read(regmap, PCA9450_REG_INT1, &status);
674 if (ret < 0) {
675 dev_err(pca9450->dev,
676 "Failed to read INT1(%d)\n", ret);
677 return IRQ_NONE;
678 }
679
680 if (status & IRQ_PWRON)
681 dev_warn(pca9450->dev, "PWRON interrupt.\n");
682
683 if (status & IRQ_WDOGB)
684 dev_warn(pca9450->dev, "WDOGB interrupt.\n");
685
686 if (status & IRQ_VR_FLT1)
687 dev_warn(pca9450->dev, "VRFLT1 interrupt.\n");
688
689 if (status & IRQ_VR_FLT2)
690 dev_warn(pca9450->dev, "VRFLT2 interrupt.\n");
691
692 if (status & IRQ_LOWVSYS)
693 dev_warn(pca9450->dev, "LOWVSYS interrupt.\n");
694
695 if (status & IRQ_THERM_105)
696 dev_warn(pca9450->dev, "IRQ_THERM_105 interrupt.\n");
697
698 if (status & IRQ_THERM_125)
699 dev_warn(pca9450->dev, "IRQ_THERM_125 interrupt.\n");
700
701 return IRQ_HANDLED;
702}
703
704static int pca9450_i2c_probe(struct i2c_client *i2c)
705{
706 enum pca9450_chip_type type = (unsigned int)(uintptr_t)
707 of_device_get_match_data(&i2c->dev);
708 const struct pca9450_regulator_desc *regulator_desc;
709 struct regulator_config config = { };
710 struct pca9450 *pca9450;
711 unsigned int device_id, i;
712 unsigned int reset_ctrl;
713 int ret;
714
715 if (!i2c->irq) {
716 dev_err(&i2c->dev, "No IRQ configured?\n");
717 return -EINVAL;
718 }
719
720 pca9450 = devm_kzalloc(&i2c->dev, sizeof(struct pca9450), GFP_KERNEL);
721 if (!pca9450)
722 return -ENOMEM;
723
724 switch (type) {
725 case PCA9450_TYPE_PCA9450A:
726 regulator_desc = pca9450a_regulators;
727 pca9450->rcnt = ARRAY_SIZE(pca9450a_regulators);
728 break;
729 case PCA9450_TYPE_PCA9450BC:
730 regulator_desc = pca9450bc_regulators;
731 pca9450->rcnt = ARRAY_SIZE(pca9450bc_regulators);
732 break;
733 default:
734 dev_err(&i2c->dev, "Unknown device type");
735 return -EINVAL;
736 }
737
738 pca9450->irq = i2c->irq;
739 pca9450->type = type;
740 pca9450->dev = &i2c->dev;
741
742 dev_set_drvdata(&i2c->dev, pca9450);
743
744 pca9450->regmap = devm_regmap_init_i2c(i2c,
745 &pca9450_regmap_config);
746 if (IS_ERR(pca9450->regmap)) {
747 dev_err(&i2c->dev, "regmap initialization failed\n");
748 return PTR_ERR(pca9450->regmap);
749 }
750
751 ret = regmap_read(pca9450->regmap, PCA9450_REG_DEV_ID, &device_id);
752 if (ret) {
753 dev_err(&i2c->dev, "Read device id error\n");
754 return ret;
755 }
756
757 /* Check your board and dts for match the right pmic */
758 if (((device_id >> 4) != 0x1 && type == PCA9450_TYPE_PCA9450A) ||
759 ((device_id >> 4) != 0x3 && type == PCA9450_TYPE_PCA9450BC)) {
760 dev_err(&i2c->dev, "Device id(%x) mismatched\n",
761 device_id >> 4);
762 return -EINVAL;
763 }
764
765 for (i = 0; i < pca9450->rcnt; i++) {
766 const struct regulator_desc *desc;
767 struct regulator_dev *rdev;
768 const struct pca9450_regulator_desc *r;
769
770 r = ®ulator_desc[i];
771 desc = &r->desc;
772
773 config.regmap = pca9450->regmap;
774 config.dev = pca9450->dev;
775
776 rdev = devm_regulator_register(pca9450->dev, desc, &config);
777 if (IS_ERR(rdev)) {
778 ret = PTR_ERR(rdev);
779 dev_err(pca9450->dev,
780 "Failed to register regulator(%s): %d\n",
781 desc->name, ret);
782 return ret;
783 }
784 }
785
786 ret = devm_request_threaded_irq(pca9450->dev, pca9450->irq, NULL,
787 pca9450_irq_handler,
788 (IRQF_TRIGGER_FALLING | IRQF_ONESHOT),
789 "pca9450-irq", pca9450);
790 if (ret != 0) {
791 dev_err(pca9450->dev, "Failed to request IRQ: %d\n",
792 pca9450->irq);
793 return ret;
794 }
795 /* Unmask all interrupt except PWRON/WDOG/RSVD */
796 ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_INT1_MSK,
797 IRQ_VR_FLT1 | IRQ_VR_FLT2 | IRQ_LOWVSYS |
798 IRQ_THERM_105 | IRQ_THERM_125,
799 IRQ_PWRON | IRQ_WDOGB | IRQ_RSVD);
800 if (ret) {
801 dev_err(&i2c->dev, "Unmask irq error\n");
802 return ret;
803 }
804
805 /* Clear PRESET_EN bit in BUCK123_DVS to use DVS registers */
806 ret = regmap_clear_bits(pca9450->regmap, PCA9450_REG_BUCK123_DVS,
807 BUCK123_PRESET_EN);
808 if (ret) {
809 dev_err(&i2c->dev, "Failed to clear PRESET_EN bit: %d\n", ret);
810 return ret;
811 }
812
813 if (of_property_read_bool(i2c->dev.of_node, "nxp,wdog_b-warm-reset"))
814 reset_ctrl = WDOG_B_CFG_WARM;
815 else
816 reset_ctrl = WDOG_B_CFG_COLD_LDO12;
817
818 /* Set reset behavior on assertion of WDOG_B signal */
819 ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_RESET_CTRL,
820 WDOG_B_CFG_MASK, reset_ctrl);
821 if (ret) {
822 dev_err(&i2c->dev, "Failed to set WDOG_B reset behavior\n");
823 return ret;
824 }
825
826 if (of_property_read_bool(i2c->dev.of_node, "nxp,i2c-lt-enable")) {
827 /* Enable I2C Level Translator */
828 ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_CONFIG2,
829 I2C_LT_MASK, I2C_LT_ON_STANDBY_RUN);
830 if (ret) {
831 dev_err(&i2c->dev,
832 "Failed to enable I2C level translator\n");
833 return ret;
834 }
835 }
836
837 /*
838 * The driver uses the LDO5CTRL_H register to control the LDO5 regulator.
839 * This is only valid if the SD_VSEL input of the PMIC is high. Let's
840 * check if the pin is available as GPIO and set it to high.
841 */
842 pca9450->sd_vsel_gpio = gpiod_get_optional(pca9450->dev, "sd-vsel", GPIOD_OUT_HIGH);
843
844 if (IS_ERR(pca9450->sd_vsel_gpio)) {
845 dev_err(&i2c->dev, "Failed to get SD_VSEL GPIO\n");
846 return PTR_ERR(pca9450->sd_vsel_gpio);
847 }
848
849 dev_info(&i2c->dev, "%s probed.\n",
850 type == PCA9450_TYPE_PCA9450A ? "pca9450a" : "pca9450bc");
851
852 return 0;
853}
854
855static const struct of_device_id pca9450_of_match[] = {
856 {
857 .compatible = "nxp,pca9450a",
858 .data = (void *)PCA9450_TYPE_PCA9450A,
859 },
860 {
861 .compatible = "nxp,pca9450b",
862 .data = (void *)PCA9450_TYPE_PCA9450BC,
863 },
864 {
865 .compatible = "nxp,pca9450c",
866 .data = (void *)PCA9450_TYPE_PCA9450BC,
867 },
868 { }
869};
870MODULE_DEVICE_TABLE(of, pca9450_of_match);
871
872static struct i2c_driver pca9450_i2c_driver = {
873 .driver = {
874 .name = "nxp-pca9450",
875 .of_match_table = pca9450_of_match,
876 },
877 .probe_new = pca9450_i2c_probe,
878};
879
880module_i2c_driver(pca9450_i2c_driver);
881
882MODULE_AUTHOR("Robin Gong <yibin.gong@nxp.com>");
883MODULE_DESCRIPTION("NXP PCA9450 Power Management IC driver");
884MODULE_LICENSE("GPL");
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/i2c.h>
9#include <linux/interrupt.h>
10#include <linux/kernel.h>
11#include <linux/module.h>
12#include <linux/of.h>
13#include <linux/of_device.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 enum pca9450_chip_type type;
36 unsigned int rcnt;
37 int irq;
38};
39
40static const struct regmap_range pca9450_status_range = {
41 .range_min = PCA9450_REG_INT1,
42 .range_max = PCA9450_REG_PWRON_STAT,
43};
44
45static const struct regmap_access_table pca9450_volatile_regs = {
46 .yes_ranges = &pca9450_status_range,
47 .n_yes_ranges = 1,
48};
49
50static const struct regmap_config pca9450_regmap_config = {
51 .reg_bits = 8,
52 .val_bits = 8,
53 .volatile_table = &pca9450_volatile_regs,
54 .max_register = PCA9450_MAX_REGISTER - 1,
55 .cache_type = REGCACHE_RBTREE,
56};
57
58/*
59 * BUCK1/2/3
60 * BUCK1RAM[1:0] BUCK1 DVS ramp rate setting
61 * 00: 25mV/1usec
62 * 01: 25mV/2usec
63 * 10: 25mV/4usec
64 * 11: 25mV/8usec
65 */
66static int pca9450_dvs_set_ramp_delay(struct regulator_dev *rdev,
67 int ramp_delay)
68{
69 int id = rdev_get_id(rdev);
70 unsigned int ramp_value;
71
72 switch (ramp_delay) {
73 case 1 ... 3125:
74 ramp_value = BUCK1_RAMP_3P125MV;
75 break;
76 case 3126 ... 6250:
77 ramp_value = BUCK1_RAMP_6P25MV;
78 break;
79 case 6251 ... 12500:
80 ramp_value = BUCK1_RAMP_12P5MV;
81 break;
82 case 12501 ... 25000:
83 ramp_value = BUCK1_RAMP_25MV;
84 break;
85 default:
86 ramp_value = BUCK1_RAMP_25MV;
87 }
88
89 return regmap_update_bits(rdev->regmap, PCA9450_REG_BUCK1CTRL + id * 3,
90 BUCK1_RAMP_MASK, ramp_value << 6);
91}
92
93static struct regulator_ops pca9450_dvs_buck_regulator_ops = {
94 .enable = regulator_enable_regmap,
95 .disable = regulator_disable_regmap,
96 .is_enabled = regulator_is_enabled_regmap,
97 .list_voltage = regulator_list_voltage_linear_range,
98 .set_voltage_sel = regulator_set_voltage_sel_regmap,
99 .get_voltage_sel = regulator_get_voltage_sel_regmap,
100 .set_voltage_time_sel = regulator_set_voltage_time_sel,
101 .set_ramp_delay = pca9450_dvs_set_ramp_delay,
102};
103
104static struct regulator_ops pca9450_buck_regulator_ops = {
105 .enable = regulator_enable_regmap,
106 .disable = regulator_disable_regmap,
107 .is_enabled = regulator_is_enabled_regmap,
108 .list_voltage = regulator_list_voltage_linear_range,
109 .set_voltage_sel = regulator_set_voltage_sel_regmap,
110 .get_voltage_sel = regulator_get_voltage_sel_regmap,
111 .set_voltage_time_sel = regulator_set_voltage_time_sel,
112};
113
114static struct regulator_ops pca9450_ldo_regulator_ops = {
115 .enable = regulator_enable_regmap,
116 .disable = regulator_disable_regmap,
117 .is_enabled = regulator_is_enabled_regmap,
118 .list_voltage = regulator_list_voltage_linear_range,
119 .set_voltage_sel = regulator_set_voltage_sel_regmap,
120 .get_voltage_sel = regulator_get_voltage_sel_regmap,
121};
122
123/*
124 * BUCK1/2/3
125 * 0.60 to 2.1875V (12.5mV step)
126 */
127static const struct linear_range pca9450_dvs_buck_volts[] = {
128 REGULATOR_LINEAR_RANGE(600000, 0x00, 0x7F, 12500),
129};
130
131/*
132 * BUCK4/5/6
133 * 0.6V to 3.4V (25mV step)
134 */
135static const struct linear_range pca9450_buck_volts[] = {
136 REGULATOR_LINEAR_RANGE(600000, 0x00, 0x70, 25000),
137 REGULATOR_LINEAR_RANGE(3400000, 0x71, 0x7F, 0),
138};
139
140/*
141 * LDO1
142 * 1.6 to 3.3V ()
143 */
144static const struct linear_range pca9450_ldo1_volts[] = {
145 REGULATOR_LINEAR_RANGE(1600000, 0x00, 0x03, 100000),
146 REGULATOR_LINEAR_RANGE(3000000, 0x04, 0x07, 100000),
147};
148
149/*
150 * LDO2
151 * 0.8 to 1.15V (50mV step)
152 */
153static const struct linear_range pca9450_ldo2_volts[] = {
154 REGULATOR_LINEAR_RANGE(800000, 0x00, 0x07, 50000),
155};
156
157/*
158 * LDO3/4
159 * 0.8 to 3.3V (100mV step)
160 */
161static const struct linear_range pca9450_ldo34_volts[] = {
162 REGULATOR_LINEAR_RANGE(800000, 0x00, 0x19, 100000),
163 REGULATOR_LINEAR_RANGE(3300000, 0x1A, 0x1F, 0),
164};
165
166/*
167 * LDO5
168 * 1.8 to 3.3V (100mV step)
169 */
170static const struct linear_range pca9450_ldo5_volts[] = {
171 REGULATOR_LINEAR_RANGE(1800000, 0x00, 0x0F, 100000),
172};
173
174static int buck_set_dvs(const struct regulator_desc *desc,
175 struct device_node *np, struct regmap *regmap,
176 char *prop, unsigned int reg, unsigned int mask)
177{
178 int ret, i;
179 uint32_t uv;
180
181 ret = of_property_read_u32(np, prop, &uv);
182 if (ret == -EINVAL)
183 return 0;
184 else if (ret)
185 return ret;
186
187 for (i = 0; i < desc->n_voltages; i++) {
188 ret = regulator_desc_list_voltage_linear_range(desc, i);
189 if (ret < 0)
190 continue;
191 if (ret == uv) {
192 i <<= ffs(desc->vsel_mask) - 1;
193 ret = regmap_update_bits(regmap, reg, mask, i);
194 break;
195 }
196 }
197
198 return ret;
199}
200
201static int pca9450_set_dvs_levels(struct device_node *np,
202 const struct regulator_desc *desc,
203 struct regulator_config *cfg)
204{
205 struct pca9450_regulator_desc *data = container_of(desc,
206 struct pca9450_regulator_desc, desc);
207 const struct pc9450_dvs_config *dvs = &data->dvs;
208 unsigned int reg, mask;
209 char *prop;
210 int i, ret = 0;
211
212 for (i = 0; i < PCA9450_DVS_LEVEL_MAX; i++) {
213 switch (i) {
214 case PCA9450_DVS_LEVEL_RUN:
215 prop = "nxp,dvs-run-voltage";
216 reg = dvs->run_reg;
217 mask = dvs->run_mask;
218 break;
219 case PCA9450_DVS_LEVEL_STANDBY:
220 prop = "nxp,dvs-standby-voltage";
221 reg = dvs->standby_reg;
222 mask = dvs->standby_mask;
223 break;
224 default:
225 return -EINVAL;
226 }
227
228 ret = buck_set_dvs(desc, np, cfg->regmap, prop, reg, mask);
229 if (ret)
230 break;
231 }
232
233 return ret;
234}
235
236static const struct pca9450_regulator_desc pca9450a_regulators[] = {
237 {
238 .desc = {
239 .name = "buck1",
240 .of_match = of_match_ptr("BUCK1"),
241 .regulators_node = of_match_ptr("regulators"),
242 .id = PCA9450_BUCK1,
243 .ops = &pca9450_dvs_buck_regulator_ops,
244 .type = REGULATOR_VOLTAGE,
245 .n_voltages = PCA9450_BUCK1_VOLTAGE_NUM,
246 .linear_ranges = pca9450_dvs_buck_volts,
247 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
248 .vsel_reg = PCA9450_REG_BUCK1OUT_DVS0,
249 .vsel_mask = BUCK1OUT_DVS0_MASK,
250 .enable_reg = PCA9450_REG_BUCK1CTRL,
251 .enable_mask = BUCK1_ENMODE_MASK,
252 .owner = THIS_MODULE,
253 .of_parse_cb = pca9450_set_dvs_levels,
254 },
255 .dvs = {
256 .run_reg = PCA9450_REG_BUCK1OUT_DVS0,
257 .run_mask = BUCK1OUT_DVS0_MASK,
258 .standby_reg = PCA9450_REG_BUCK1OUT_DVS1,
259 .standby_mask = BUCK1OUT_DVS1_MASK,
260 },
261 },
262 {
263 .desc = {
264 .name = "buck2",
265 .of_match = of_match_ptr("BUCK2"),
266 .regulators_node = of_match_ptr("regulators"),
267 .id = PCA9450_BUCK2,
268 .ops = &pca9450_dvs_buck_regulator_ops,
269 .type = REGULATOR_VOLTAGE,
270 .n_voltages = PCA9450_BUCK2_VOLTAGE_NUM,
271 .linear_ranges = pca9450_dvs_buck_volts,
272 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
273 .vsel_reg = PCA9450_REG_BUCK2OUT_DVS0,
274 .vsel_mask = BUCK2OUT_DVS0_MASK,
275 .enable_reg = PCA9450_REG_BUCK2CTRL,
276 .enable_mask = BUCK1_ENMODE_MASK,
277 .owner = THIS_MODULE,
278 .of_parse_cb = pca9450_set_dvs_levels,
279 },
280 .dvs = {
281 .run_reg = PCA9450_REG_BUCK2OUT_DVS0,
282 .run_mask = BUCK2OUT_DVS0_MASK,
283 .standby_reg = PCA9450_REG_BUCK2OUT_DVS1,
284 .standby_mask = BUCK2OUT_DVS1_MASK,
285 },
286 },
287 {
288 .desc = {
289 .name = "buck3",
290 .of_match = of_match_ptr("BUCK3"),
291 .regulators_node = of_match_ptr("regulators"),
292 .id = PCA9450_BUCK3,
293 .ops = &pca9450_dvs_buck_regulator_ops,
294 .type = REGULATOR_VOLTAGE,
295 .n_voltages = PCA9450_BUCK3_VOLTAGE_NUM,
296 .linear_ranges = pca9450_dvs_buck_volts,
297 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
298 .vsel_reg = PCA9450_REG_BUCK3OUT_DVS0,
299 .vsel_mask = BUCK3OUT_DVS0_MASK,
300 .enable_reg = PCA9450_REG_BUCK3CTRL,
301 .enable_mask = BUCK3_ENMODE_MASK,
302 .owner = THIS_MODULE,
303 .of_parse_cb = pca9450_set_dvs_levels,
304 },
305 .dvs = {
306 .run_reg = PCA9450_REG_BUCK3OUT_DVS0,
307 .run_mask = BUCK3OUT_DVS0_MASK,
308 .standby_reg = PCA9450_REG_BUCK3OUT_DVS1,
309 .standby_mask = BUCK3OUT_DVS1_MASK,
310 },
311 },
312 {
313 .desc = {
314 .name = "buck4",
315 .of_match = of_match_ptr("BUCK4"),
316 .regulators_node = of_match_ptr("regulators"),
317 .id = PCA9450_BUCK4,
318 .ops = &pca9450_buck_regulator_ops,
319 .type = REGULATOR_VOLTAGE,
320 .n_voltages = PCA9450_BUCK4_VOLTAGE_NUM,
321 .linear_ranges = pca9450_buck_volts,
322 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
323 .vsel_reg = PCA9450_REG_BUCK4OUT,
324 .vsel_mask = BUCK4OUT_MASK,
325 .enable_reg = PCA9450_REG_BUCK4CTRL,
326 .enable_mask = BUCK4_ENMODE_MASK,
327 .owner = THIS_MODULE,
328 },
329 },
330 {
331 .desc = {
332 .name = "buck5",
333 .of_match = of_match_ptr("BUCK5"),
334 .regulators_node = of_match_ptr("regulators"),
335 .id = PCA9450_BUCK5,
336 .ops = &pca9450_buck_regulator_ops,
337 .type = REGULATOR_VOLTAGE,
338 .n_voltages = PCA9450_BUCK5_VOLTAGE_NUM,
339 .linear_ranges = pca9450_buck_volts,
340 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
341 .vsel_reg = PCA9450_REG_BUCK5OUT,
342 .vsel_mask = BUCK5OUT_MASK,
343 .enable_reg = PCA9450_REG_BUCK5CTRL,
344 .enable_mask = BUCK5_ENMODE_MASK,
345 .owner = THIS_MODULE,
346 },
347 },
348 {
349 .desc = {
350 .name = "buck6",
351 .of_match = of_match_ptr("BUCK6"),
352 .regulators_node = of_match_ptr("regulators"),
353 .id = PCA9450_BUCK6,
354 .ops = &pca9450_buck_regulator_ops,
355 .type = REGULATOR_VOLTAGE,
356 .n_voltages = PCA9450_BUCK6_VOLTAGE_NUM,
357 .linear_ranges = pca9450_buck_volts,
358 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
359 .vsel_reg = PCA9450_REG_BUCK6OUT,
360 .vsel_mask = BUCK6OUT_MASK,
361 .enable_reg = PCA9450_REG_BUCK6CTRL,
362 .enable_mask = BUCK6_ENMODE_MASK,
363 .owner = THIS_MODULE,
364 },
365 },
366 {
367 .desc = {
368 .name = "ldo1",
369 .of_match = of_match_ptr("LDO1"),
370 .regulators_node = of_match_ptr("regulators"),
371 .id = PCA9450_LDO1,
372 .ops = &pca9450_ldo_regulator_ops,
373 .type = REGULATOR_VOLTAGE,
374 .n_voltages = PCA9450_LDO1_VOLTAGE_NUM,
375 .linear_ranges = pca9450_ldo1_volts,
376 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts),
377 .vsel_reg = PCA9450_REG_LDO1CTRL,
378 .vsel_mask = LDO1OUT_MASK,
379 .enable_reg = PCA9450_REG_LDO1CTRL,
380 .enable_mask = LDO1_EN_MASK,
381 .owner = THIS_MODULE,
382 },
383 },
384 {
385 .desc = {
386 .name = "ldo2",
387 .of_match = of_match_ptr("LDO2"),
388 .regulators_node = of_match_ptr("regulators"),
389 .id = PCA9450_LDO2,
390 .ops = &pca9450_ldo_regulator_ops,
391 .type = REGULATOR_VOLTAGE,
392 .n_voltages = PCA9450_LDO2_VOLTAGE_NUM,
393 .linear_ranges = pca9450_ldo2_volts,
394 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo2_volts),
395 .vsel_reg = PCA9450_REG_LDO2CTRL,
396 .vsel_mask = LDO2OUT_MASK,
397 .enable_reg = PCA9450_REG_LDO2CTRL,
398 .enable_mask = LDO2_EN_MASK,
399 .owner = THIS_MODULE,
400 },
401 },
402 {
403 .desc = {
404 .name = "ldo3",
405 .of_match = of_match_ptr("LDO3"),
406 .regulators_node = of_match_ptr("regulators"),
407 .id = PCA9450_LDO3,
408 .ops = &pca9450_ldo_regulator_ops,
409 .type = REGULATOR_VOLTAGE,
410 .n_voltages = PCA9450_LDO3_VOLTAGE_NUM,
411 .linear_ranges = pca9450_ldo34_volts,
412 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
413 .vsel_reg = PCA9450_REG_LDO3CTRL,
414 .vsel_mask = LDO3OUT_MASK,
415 .enable_reg = PCA9450_REG_LDO3CTRL,
416 .enable_mask = LDO3_EN_MASK,
417 .owner = THIS_MODULE,
418 },
419 },
420 {
421 .desc = {
422 .name = "ldo4",
423 .of_match = of_match_ptr("LDO4"),
424 .regulators_node = of_match_ptr("regulators"),
425 .id = PCA9450_LDO4,
426 .ops = &pca9450_ldo_regulator_ops,
427 .type = REGULATOR_VOLTAGE,
428 .n_voltages = PCA9450_LDO4_VOLTAGE_NUM,
429 .linear_ranges = pca9450_ldo34_volts,
430 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
431 .vsel_reg = PCA9450_REG_LDO4CTRL,
432 .vsel_mask = LDO4OUT_MASK,
433 .enable_reg = PCA9450_REG_LDO4CTRL,
434 .enable_mask = LDO4_EN_MASK,
435 .owner = THIS_MODULE,
436 },
437 },
438 {
439 .desc = {
440 .name = "ldo5",
441 .of_match = of_match_ptr("LDO5"),
442 .regulators_node = of_match_ptr("regulators"),
443 .id = PCA9450_LDO5,
444 .ops = &pca9450_ldo_regulator_ops,
445 .type = REGULATOR_VOLTAGE,
446 .n_voltages = PCA9450_LDO5_VOLTAGE_NUM,
447 .linear_ranges = pca9450_ldo5_volts,
448 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts),
449 .vsel_reg = PCA9450_REG_LDO5CTRL_H,
450 .vsel_mask = LDO5HOUT_MASK,
451 .enable_reg = PCA9450_REG_LDO5CTRL_H,
452 .enable_mask = LDO5H_EN_MASK,
453 .owner = THIS_MODULE,
454 },
455 },
456};
457
458/*
459 * Buck3 removed on PCA9450B and connected with Buck1 internal for dual phase
460 * on PCA9450C as no Buck3.
461 */
462static const struct pca9450_regulator_desc pca9450bc_regulators[] = {
463 {
464 .desc = {
465 .name = "buck1",
466 .of_match = of_match_ptr("BUCK1"),
467 .regulators_node = of_match_ptr("regulators"),
468 .id = PCA9450_BUCK1,
469 .ops = &pca9450_dvs_buck_regulator_ops,
470 .type = REGULATOR_VOLTAGE,
471 .n_voltages = PCA9450_BUCK1_VOLTAGE_NUM,
472 .linear_ranges = pca9450_dvs_buck_volts,
473 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
474 .vsel_reg = PCA9450_REG_BUCK1OUT_DVS0,
475 .vsel_mask = BUCK1OUT_DVS0_MASK,
476 .enable_reg = PCA9450_REG_BUCK1CTRL,
477 .enable_mask = BUCK1_ENMODE_MASK,
478 .owner = THIS_MODULE,
479 .of_parse_cb = pca9450_set_dvs_levels,
480 },
481 .dvs = {
482 .run_reg = PCA9450_REG_BUCK1OUT_DVS0,
483 .run_mask = BUCK1OUT_DVS0_MASK,
484 .standby_reg = PCA9450_REG_BUCK1OUT_DVS1,
485 .standby_mask = BUCK1OUT_DVS1_MASK,
486 },
487 },
488 {
489 .desc = {
490 .name = "buck2",
491 .of_match = of_match_ptr("BUCK2"),
492 .regulators_node = of_match_ptr("regulators"),
493 .id = PCA9450_BUCK2,
494 .ops = &pca9450_dvs_buck_regulator_ops,
495 .type = REGULATOR_VOLTAGE,
496 .n_voltages = PCA9450_BUCK2_VOLTAGE_NUM,
497 .linear_ranges = pca9450_dvs_buck_volts,
498 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
499 .vsel_reg = PCA9450_REG_BUCK2OUT_DVS0,
500 .vsel_mask = BUCK2OUT_DVS0_MASK,
501 .enable_reg = PCA9450_REG_BUCK2CTRL,
502 .enable_mask = BUCK1_ENMODE_MASK,
503 .owner = THIS_MODULE,
504 .of_parse_cb = pca9450_set_dvs_levels,
505 },
506 .dvs = {
507 .run_reg = PCA9450_REG_BUCK2OUT_DVS0,
508 .run_mask = BUCK2OUT_DVS0_MASK,
509 .standby_reg = PCA9450_REG_BUCK2OUT_DVS1,
510 .standby_mask = BUCK2OUT_DVS1_MASK,
511 },
512 },
513 {
514 .desc = {
515 .name = "buck4",
516 .of_match = of_match_ptr("BUCK4"),
517 .regulators_node = of_match_ptr("regulators"),
518 .id = PCA9450_BUCK4,
519 .ops = &pca9450_buck_regulator_ops,
520 .type = REGULATOR_VOLTAGE,
521 .n_voltages = PCA9450_BUCK4_VOLTAGE_NUM,
522 .linear_ranges = pca9450_buck_volts,
523 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
524 .vsel_reg = PCA9450_REG_BUCK4OUT,
525 .vsel_mask = BUCK4OUT_MASK,
526 .enable_reg = PCA9450_REG_BUCK4CTRL,
527 .enable_mask = BUCK4_ENMODE_MASK,
528 .owner = THIS_MODULE,
529 },
530 },
531 {
532 .desc = {
533 .name = "buck5",
534 .of_match = of_match_ptr("BUCK5"),
535 .regulators_node = of_match_ptr("regulators"),
536 .id = PCA9450_BUCK5,
537 .ops = &pca9450_buck_regulator_ops,
538 .type = REGULATOR_VOLTAGE,
539 .n_voltages = PCA9450_BUCK5_VOLTAGE_NUM,
540 .linear_ranges = pca9450_buck_volts,
541 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
542 .vsel_reg = PCA9450_REG_BUCK5OUT,
543 .vsel_mask = BUCK5OUT_MASK,
544 .enable_reg = PCA9450_REG_BUCK5CTRL,
545 .enable_mask = BUCK5_ENMODE_MASK,
546 .owner = THIS_MODULE,
547 },
548 },
549 {
550 .desc = {
551 .name = "buck6",
552 .of_match = of_match_ptr("BUCK6"),
553 .regulators_node = of_match_ptr("regulators"),
554 .id = PCA9450_BUCK6,
555 .ops = &pca9450_buck_regulator_ops,
556 .type = REGULATOR_VOLTAGE,
557 .n_voltages = PCA9450_BUCK6_VOLTAGE_NUM,
558 .linear_ranges = pca9450_buck_volts,
559 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
560 .vsel_reg = PCA9450_REG_BUCK6OUT,
561 .vsel_mask = BUCK6OUT_MASK,
562 .enable_reg = PCA9450_REG_BUCK6CTRL,
563 .enable_mask = BUCK6_ENMODE_MASK,
564 .owner = THIS_MODULE,
565 },
566 },
567 {
568 .desc = {
569 .name = "ldo1",
570 .of_match = of_match_ptr("LDO1"),
571 .regulators_node = of_match_ptr("regulators"),
572 .id = PCA9450_LDO1,
573 .ops = &pca9450_ldo_regulator_ops,
574 .type = REGULATOR_VOLTAGE,
575 .n_voltages = PCA9450_LDO1_VOLTAGE_NUM,
576 .linear_ranges = pca9450_ldo1_volts,
577 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts),
578 .vsel_reg = PCA9450_REG_LDO1CTRL,
579 .vsel_mask = LDO1OUT_MASK,
580 .enable_reg = PCA9450_REG_LDO1CTRL,
581 .enable_mask = LDO1_EN_MASK,
582 .owner = THIS_MODULE,
583 },
584 },
585 {
586 .desc = {
587 .name = "ldo2",
588 .of_match = of_match_ptr("LDO2"),
589 .regulators_node = of_match_ptr("regulators"),
590 .id = PCA9450_LDO2,
591 .ops = &pca9450_ldo_regulator_ops,
592 .type = REGULATOR_VOLTAGE,
593 .n_voltages = PCA9450_LDO2_VOLTAGE_NUM,
594 .linear_ranges = pca9450_ldo2_volts,
595 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo2_volts),
596 .vsel_reg = PCA9450_REG_LDO2CTRL,
597 .vsel_mask = LDO2OUT_MASK,
598 .enable_reg = PCA9450_REG_LDO2CTRL,
599 .enable_mask = LDO2_EN_MASK,
600 .owner = THIS_MODULE,
601 },
602 },
603 {
604 .desc = {
605 .name = "ldo3",
606 .of_match = of_match_ptr("LDO3"),
607 .regulators_node = of_match_ptr("regulators"),
608 .id = PCA9450_LDO3,
609 .ops = &pca9450_ldo_regulator_ops,
610 .type = REGULATOR_VOLTAGE,
611 .n_voltages = PCA9450_LDO3_VOLTAGE_NUM,
612 .linear_ranges = pca9450_ldo34_volts,
613 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
614 .vsel_reg = PCA9450_REG_LDO3CTRL,
615 .vsel_mask = LDO3OUT_MASK,
616 .enable_reg = PCA9450_REG_LDO3CTRL,
617 .enable_mask = LDO3_EN_MASK,
618 .owner = THIS_MODULE,
619 },
620 },
621 {
622 .desc = {
623 .name = "ldo4",
624 .of_match = of_match_ptr("LDO4"),
625 .regulators_node = of_match_ptr("regulators"),
626 .id = PCA9450_LDO4,
627 .ops = &pca9450_ldo_regulator_ops,
628 .type = REGULATOR_VOLTAGE,
629 .n_voltages = PCA9450_LDO4_VOLTAGE_NUM,
630 .linear_ranges = pca9450_ldo34_volts,
631 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
632 .vsel_reg = PCA9450_REG_LDO4CTRL,
633 .vsel_mask = LDO4OUT_MASK,
634 .enable_reg = PCA9450_REG_LDO4CTRL,
635 .enable_mask = LDO4_EN_MASK,
636 .owner = THIS_MODULE,
637 },
638 },
639 {
640 .desc = {
641 .name = "ldo5",
642 .of_match = of_match_ptr("LDO5"),
643 .regulators_node = of_match_ptr("regulators"),
644 .id = PCA9450_LDO5,
645 .ops = &pca9450_ldo_regulator_ops,
646 .type = REGULATOR_VOLTAGE,
647 .n_voltages = PCA9450_LDO5_VOLTAGE_NUM,
648 .linear_ranges = pca9450_ldo5_volts,
649 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts),
650 .vsel_reg = PCA9450_REG_LDO5CTRL_H,
651 .vsel_mask = LDO5HOUT_MASK,
652 .enable_reg = PCA9450_REG_LDO5CTRL_H,
653 .enable_mask = LDO5H_EN_MASK,
654 .owner = THIS_MODULE,
655 },
656 },
657};
658
659static irqreturn_t pca9450_irq_handler(int irq, void *data)
660{
661 struct pca9450 *pca9450 = data;
662 struct regmap *regmap = pca9450->regmap;
663 unsigned int status;
664 int ret;
665
666 ret = regmap_read(regmap, PCA9450_REG_INT1, &status);
667 if (ret < 0) {
668 dev_err(pca9450->dev,
669 "Failed to read INT1(%d)\n", ret);
670 return IRQ_NONE;
671 }
672
673 if (status & IRQ_PWRON)
674 dev_warn(pca9450->dev, "PWRON interrupt.\n");
675
676 if (status & IRQ_WDOGB)
677 dev_warn(pca9450->dev, "WDOGB interrupt.\n");
678
679 if (status & IRQ_VR_FLT1)
680 dev_warn(pca9450->dev, "VRFLT1 interrupt.\n");
681
682 if (status & IRQ_VR_FLT2)
683 dev_warn(pca9450->dev, "VRFLT2 interrupt.\n");
684
685 if (status & IRQ_LOWVSYS)
686 dev_warn(pca9450->dev, "LOWVSYS interrupt.\n");
687
688 if (status & IRQ_THERM_105)
689 dev_warn(pca9450->dev, "IRQ_THERM_105 interrupt.\n");
690
691 if (status & IRQ_THERM_125)
692 dev_warn(pca9450->dev, "IRQ_THERM_125 interrupt.\n");
693
694 return IRQ_HANDLED;
695}
696
697static int pca9450_i2c_probe(struct i2c_client *i2c,
698 const struct i2c_device_id *id)
699{
700 enum pca9450_chip_type type = (unsigned int)(uintptr_t)
701 of_device_get_match_data(&i2c->dev);
702 const struct pca9450_regulator_desc *regulator_desc;
703 struct regulator_config config = { };
704 struct pca9450 *pca9450;
705 unsigned int device_id, i;
706 int ret;
707
708 if (!i2c->irq) {
709 dev_err(&i2c->dev, "No IRQ configured?\n");
710 return -EINVAL;
711 }
712
713 pca9450 = devm_kzalloc(&i2c->dev, sizeof(struct pca9450), GFP_KERNEL);
714 if (!pca9450)
715 return -ENOMEM;
716
717 switch (type) {
718 case PCA9450_TYPE_PCA9450A:
719 regulator_desc = pca9450a_regulators;
720 pca9450->rcnt = ARRAY_SIZE(pca9450a_regulators);
721 break;
722 case PCA9450_TYPE_PCA9450BC:
723 regulator_desc = pca9450bc_regulators;
724 pca9450->rcnt = ARRAY_SIZE(pca9450bc_regulators);
725 break;
726 default:
727 dev_err(&i2c->dev, "Unknown device type");
728 return -EINVAL;
729 }
730
731 pca9450->irq = i2c->irq;
732 pca9450->type = type;
733 pca9450->dev = &i2c->dev;
734
735 dev_set_drvdata(&i2c->dev, pca9450);
736
737 pca9450->regmap = devm_regmap_init_i2c(i2c,
738 &pca9450_regmap_config);
739 if (IS_ERR(pca9450->regmap)) {
740 dev_err(&i2c->dev, "regmap initialization failed\n");
741 return PTR_ERR(pca9450->regmap);
742 }
743
744 ret = regmap_read(pca9450->regmap, PCA9450_REG_DEV_ID, &device_id);
745 if (ret) {
746 dev_err(&i2c->dev, "Read device id error\n");
747 return ret;
748 }
749
750 /* Check your board and dts for match the right pmic */
751 if (((device_id >> 4) != 0x1 && type == PCA9450_TYPE_PCA9450A) ||
752 ((device_id >> 4) != 0x3 && type == PCA9450_TYPE_PCA9450BC)) {
753 dev_err(&i2c->dev, "Device id(%x) mismatched\n",
754 device_id >> 4);
755 return -EINVAL;
756 }
757
758 for (i = 0; i < pca9450->rcnt; i++) {
759 const struct regulator_desc *desc;
760 struct regulator_dev *rdev;
761 const struct pca9450_regulator_desc *r;
762
763 r = ®ulator_desc[i];
764 desc = &r->desc;
765
766 config.regmap = pca9450->regmap;
767 config.dev = pca9450->dev;
768
769 rdev = devm_regulator_register(pca9450->dev, desc, &config);
770 if (IS_ERR(rdev)) {
771 ret = PTR_ERR(rdev);
772 dev_err(pca9450->dev,
773 "Failed to register regulator(%s): %d\n",
774 desc->name, ret);
775 return ret;
776 }
777 }
778
779 ret = devm_request_threaded_irq(pca9450->dev, pca9450->irq, NULL,
780 pca9450_irq_handler,
781 (IRQF_TRIGGER_FALLING | IRQF_ONESHOT),
782 "pca9450-irq", pca9450);
783 if (ret != 0) {
784 dev_err(pca9450->dev, "Failed to request IRQ: %d\n",
785 pca9450->irq);
786 return ret;
787 }
788 /* Unmask all interrupt except PWRON/WDOG/RSVD */
789 ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_INT1_MSK,
790 IRQ_VR_FLT1 | IRQ_VR_FLT2 | IRQ_LOWVSYS |
791 IRQ_THERM_105 | IRQ_THERM_125,
792 IRQ_PWRON | IRQ_WDOGB | IRQ_RSVD);
793 if (ret) {
794 dev_err(&i2c->dev, "Unmask irq error\n");
795 return ret;
796 }
797
798 dev_info(&i2c->dev, "%s probed.\n",
799 type == PCA9450_TYPE_PCA9450A ? "pca9450a" : "pca9450bc");
800
801 return 0;
802}
803
804static const struct of_device_id pca9450_of_match[] = {
805 {
806 .compatible = "nxp,pca9450a",
807 .data = (void *)PCA9450_TYPE_PCA9450A,
808 },
809 {
810 .compatible = "nxp,pca9450b",
811 .data = (void *)PCA9450_TYPE_PCA9450BC,
812 },
813 {
814 .compatible = "nxp,pca9450c",
815 .data = (void *)PCA9450_TYPE_PCA9450BC,
816 },
817 { }
818};
819MODULE_DEVICE_TABLE(of, pca9450_of_match);
820
821static struct i2c_driver pca9450_i2c_driver = {
822 .driver = {
823 .name = "nxp-pca9450",
824 .of_match_table = pca9450_of_match,
825 },
826 .probe = pca9450_i2c_probe,
827};
828
829module_i2c_driver(pca9450_i2c_driver);
830
831MODULE_AUTHOR("Robin Gong <yibin.gong@nxp.com>");
832MODULE_DESCRIPTION("NXP PCA9450 Power Management IC driver");
833MODULE_LICENSE("GPL");