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r8152: fix tx packets accounting
[linux/fpc-iii.git] / drivers / regulator / max77620-regulator.c
bloba1b49a6d538f1493489f2e45092feb6dd0b96219
1 /*
2 * Maxim MAX77620 Regulator driver
3 *
4 * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
5 *
6 * Author: Mallikarjun Kasoju <mkasoju@nvidia.com>
7 * Laxman Dewangan <ldewangan@nvidia.com>
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms and conditions of the GNU General Public License,
11 * version 2, as published by the Free Software Foundation.
12 */
13
14 #include <linux/init.h>
15 #include <linux/mfd/max77620.h>
16 #include <linux/module.h>
17 #include <linux/of.h>
18 #include <linux/platform_device.h>
19 #include <linux/regmap.h>
20 #include <linux/regulator/driver.h>
21 #include <linux/regulator/machine.h>
22 #include <linux/regulator/of_regulator.h>
23
24 #define max77620_rails(_name) "max77620-"#_name
25
26 /* Power Mode */
27 #define MAX77620_POWER_MODE_NORMAL 3
28 #define MAX77620_POWER_MODE_LPM 2
29 #define MAX77620_POWER_MODE_GLPM 1
30 #define MAX77620_POWER_MODE_DISABLE 0
31
32 /* SD Slew Rate */
33 #define MAX77620_SD_SR_13_75 0
34 #define MAX77620_SD_SR_27_5 1
35 #define MAX77620_SD_SR_55 2
36 #define MAX77620_SD_SR_100 3
37
38 enum max77620_regulators {
39 MAX77620_REGULATOR_ID_SD0,
40 MAX77620_REGULATOR_ID_SD1,
41 MAX77620_REGULATOR_ID_SD2,
42 MAX77620_REGULATOR_ID_SD3,
43 MAX77620_REGULATOR_ID_SD4,
44 MAX77620_REGULATOR_ID_LDO0,
45 MAX77620_REGULATOR_ID_LDO1,
46 MAX77620_REGULATOR_ID_LDO2,
47 MAX77620_REGULATOR_ID_LDO3,
48 MAX77620_REGULATOR_ID_LDO4,
49 MAX77620_REGULATOR_ID_LDO5,
50 MAX77620_REGULATOR_ID_LDO6,
51 MAX77620_REGULATOR_ID_LDO7,
52 MAX77620_REGULATOR_ID_LDO8,
53 MAX77620_NUM_REGS,
54 };
55
56 /* Regulator types */
57 enum max77620_regulator_type {
58 MAX77620_REGULATOR_TYPE_SD,
59 MAX77620_REGULATOR_TYPE_LDO_N,
60 MAX77620_REGULATOR_TYPE_LDO_P,
61 };
62
63 struct max77620_regulator_info {
64 u8 type;
65 u8 fps_addr;
66 u8 volt_addr;
67 u8 cfg_addr;
68 u8 power_mode_mask;
69 u8 power_mode_shift;
70 u8 remote_sense_addr;
71 u8 remote_sense_mask;
72 struct regulator_desc desc;
73 };
74
75 struct max77620_regulator_pdata {
76 struct regulator_init_data *reg_idata;
77 int active_fps_src;
78 int active_fps_pd_slot;
79 int active_fps_pu_slot;
80 int suspend_fps_src;
81 int suspend_fps_pd_slot;
82 int suspend_fps_pu_slot;
83 int current_mode;
84 int ramp_rate_setting;
85 };
86
87 struct max77620_regulator {
88 struct device *dev;
89 struct regmap *rmap;
90 struct max77620_regulator_info *rinfo[MAX77620_NUM_REGS];
91 struct max77620_regulator_pdata reg_pdata[MAX77620_NUM_REGS];
92 int enable_power_mode[MAX77620_NUM_REGS];
93 int current_power_mode[MAX77620_NUM_REGS];
94 int active_fps_src[MAX77620_NUM_REGS];
95 };
96
97 #define fps_src_name(fps_src) \
98 (fps_src == MAX77620_FPS_SRC_0 ? "FPS_SRC_0" : \
99 fps_src == MAX77620_FPS_SRC_1 ? "FPS_SRC_1" : \
100 fps_src == MAX77620_FPS_SRC_2 ? "FPS_SRC_2" : "FPS_SRC_NONE")
101
102 static int max77620_regulator_get_fps_src(struct max77620_regulator *pmic,
103 int id)
104 {
105 struct max77620_regulator_info *rinfo = pmic->rinfo[id];
106 unsigned int val;
107 int ret;
108
109 ret = regmap_read(pmic->rmap, rinfo->fps_addr, &val);
110 if (ret < 0) {
111 dev_err(pmic->dev, "Reg 0x%02x read failed %d\n",
112 rinfo->fps_addr, ret);
113 return ret;
114 }
115
116 return (val & MAX77620_FPS_SRC_MASK) >> MAX77620_FPS_SRC_SHIFT;
117 }
118
119 static int max77620_regulator_set_fps_src(struct max77620_regulator *pmic,
120 int fps_src, int id)
121 {
122 struct max77620_regulator_info *rinfo = pmic->rinfo[id];
123 unsigned int val;
124 int ret;
125
126 if (!rinfo)
127 return 0;
128
129 switch (fps_src) {
130 case MAX77620_FPS_SRC_0:
131 case MAX77620_FPS_SRC_1:
132 case MAX77620_FPS_SRC_2:
133 case MAX77620_FPS_SRC_NONE:
134 break;
135
136 case MAX77620_FPS_SRC_DEF:
137 ret = regmap_read(pmic->rmap, rinfo->fps_addr, &val);
138 if (ret < 0) {
139 dev_err(pmic->dev, "Reg 0x%02x read failed %d\n",
140 rinfo->fps_addr, ret);
141 return ret;
142 }
143 ret = (val & MAX77620_FPS_SRC_MASK) >> MAX77620_FPS_SRC_SHIFT;
144 pmic->active_fps_src[id] = ret;
145 return 0;
146
147 default:
148 dev_err(pmic->dev, "Invalid FPS %d for regulator %d\n",
149 fps_src, id);
150 return -EINVAL;
151 }
152
153 ret = regmap_update_bits(pmic->rmap, rinfo->fps_addr,
154 MAX77620_FPS_SRC_MASK,
155 fps_src << MAX77620_FPS_SRC_SHIFT);
156 if (ret < 0) {
157 dev_err(pmic->dev, "Reg 0x%02x update failed %d\n",
158 rinfo->fps_addr, ret);
159 return ret;
160 }
161 pmic->active_fps_src[id] = fps_src;
162
163 return 0;
164 }
165
166 static int max77620_regulator_set_fps_slots(struct max77620_regulator *pmic,
167 int id, bool is_suspend)
168 {
169 struct max77620_regulator_pdata *rpdata = &pmic->reg_pdata[id];
170 struct max77620_regulator_info *rinfo = pmic->rinfo[id];
171 unsigned int val = 0;
172 unsigned int mask = 0;
173 int pu = rpdata->active_fps_pu_slot;
174 int pd = rpdata->active_fps_pd_slot;
175 int ret = 0;
176
177 if (!rinfo)
178 return 0;
179
180 if (is_suspend) {
181 pu = rpdata->suspend_fps_pu_slot;
182 pd = rpdata->suspend_fps_pd_slot;
183 }
184
185 /* FPS power up period setting */
186 if (pu >= 0) {
187 val |= (pu << MAX77620_FPS_PU_PERIOD_SHIFT);
188 mask |= MAX77620_FPS_PU_PERIOD_MASK;
189 }
190
191 /* FPS power down period setting */
192 if (pd >= 0) {
193 val |= (pd << MAX77620_FPS_PD_PERIOD_SHIFT);
194 mask |= MAX77620_FPS_PD_PERIOD_MASK;
195 }
196
197 if (mask) {
198 ret = regmap_update_bits(pmic->rmap, rinfo->fps_addr,
199 mask, val);
200 if (ret < 0) {
201 dev_err(pmic->dev, "Reg 0x%02x update failed: %d\n",
202 rinfo->fps_addr, ret);
203 return ret;
204 }
205 }
206
207 return ret;
208 }
209
210 static int max77620_regulator_set_power_mode(struct max77620_regulator *pmic,
211 int power_mode, int id)
212 {
213 struct max77620_regulator_info *rinfo = pmic->rinfo[id];
214 u8 mask = rinfo->power_mode_mask;
215 u8 shift = rinfo->power_mode_shift;
216 u8 addr;
217 int ret;
218
219 switch (rinfo->type) {
220 case MAX77620_REGULATOR_TYPE_SD:
221 addr = rinfo->cfg_addr;
222 break;
223 default:
224 addr = rinfo->volt_addr;
225 break;
226 }
227
228 ret = regmap_update_bits(pmic->rmap, addr, mask, power_mode << shift);
229 if (ret < 0) {
230 dev_err(pmic->dev, "Regulator %d mode set failed: %d\n",
231 id, ret);
232 return ret;
233 }
234 pmic->current_power_mode[id] = power_mode;
235
236 return ret;
237 }
238
239 static int max77620_regulator_get_power_mode(struct max77620_regulator *pmic,
240 int id)
241 {
242 struct max77620_regulator_info *rinfo = pmic->rinfo[id];
243 unsigned int val, addr;
244 u8 mask = rinfo->power_mode_mask;
245 u8 shift = rinfo->power_mode_shift;
246 int ret;
247
248 switch (rinfo->type) {
249 case MAX77620_REGULATOR_TYPE_SD:
250 addr = rinfo->cfg_addr;
251 break;
252 default:
253 addr = rinfo->volt_addr;
254 break;
255 }
256
257 ret = regmap_read(pmic->rmap, addr, &val);
258 if (ret < 0) {
259 dev_err(pmic->dev, "Regulator %d: Reg 0x%02x read failed: %d\n",
260 id, addr, ret);
261 return ret;
262 }
263
264 return (val & mask) >> shift;
265 }
266
267 static int max77620_read_slew_rate(struct max77620_regulator *pmic, int id)
268 {
269 struct max77620_regulator_info *rinfo = pmic->rinfo[id];
270 unsigned int rval;
271 int slew_rate;
272 int ret;
273
274 ret = regmap_read(pmic->rmap, rinfo->cfg_addr, &rval);
275 if (ret < 0) {
276 dev_err(pmic->dev, "Register 0x%02x read failed: %d\n",
277 rinfo->cfg_addr, ret);
278 return ret;
279 }
280
281 switch (rinfo->type) {
282 case MAX77620_REGULATOR_TYPE_SD:
283 slew_rate = (rval >> MAX77620_SD_SR_SHIFT) & 0x3;
284 switch (slew_rate) {
285 case 0:
286 slew_rate = 13750;
287 break;
288 case 1:
289 slew_rate = 27500;
290 break;
291 case 2:
292 slew_rate = 55000;
293 break;
294 case 3:
295 slew_rate = 100000;
296 break;
297 }
298 rinfo->desc.ramp_delay = slew_rate;
299 break;
300 default:
301 slew_rate = rval & 0x1;
302 switch (slew_rate) {
303 case 0:
304 slew_rate = 100000;
305 break;
306 case 1:
307 slew_rate = 5000;
308 break;
309 }
310 rinfo->desc.ramp_delay = slew_rate;
311 break;
312 }
313
314 return 0;
315 }
316
317 static int max77620_set_slew_rate(struct max77620_regulator *pmic, int id,
318 int slew_rate)
319 {
320 struct max77620_regulator_info *rinfo = pmic->rinfo[id];
321 unsigned int val;
322 int ret;
323 u8 mask;
324
325 if (rinfo->type == MAX77620_REGULATOR_TYPE_SD) {
326 if (slew_rate <= 13750)
327 val = 0;
328 else if (slew_rate <= 27500)
329 val = 1;
330 else if (slew_rate <= 55000)
331 val = 2;
332 else
333 val = 3;
334 val <<= MAX77620_SD_SR_SHIFT;
335 mask = MAX77620_SD_SR_MASK;
336 } else {
337 if (slew_rate <= 5000)
338 val = 1;
339 else
340 val = 0;
341 mask = MAX77620_LDO_SLEW_RATE_MASK;
342 }
343
344 ret = regmap_update_bits(pmic->rmap, rinfo->cfg_addr, mask, val);
345 if (ret < 0) {
346 dev_err(pmic->dev, "Regulator %d slew rate set failed: %d\n",
347 id, ret);
348 return ret;
349 }
350
351 return 0;
352 }
353
354 static int max77620_init_pmic(struct max77620_regulator *pmic, int id)
355 {
356 struct max77620_regulator_pdata *rpdata = &pmic->reg_pdata[id];
357 int ret;
358
359 /* Update power mode */
360 ret = max77620_regulator_get_power_mode(pmic, id);
361 if (ret < 0)
362 return ret;
363
364 pmic->current_power_mode[id] = ret;
365 pmic->enable_power_mode[id] = MAX77620_POWER_MODE_NORMAL;
366
367 if (rpdata->active_fps_src == MAX77620_FPS_SRC_DEF) {
368 ret = max77620_regulator_get_fps_src(pmic, id);
369 if (ret < 0)
370 return ret;
371 rpdata->active_fps_src = ret;
372 }
373
374 /* If rails are externally control of FPS then enable it always. */
375 if (rpdata->active_fps_src == MAX77620_FPS_SRC_NONE) {
376 ret = max77620_regulator_set_power_mode(pmic,
377 pmic->enable_power_mode[id], id);
378 if (ret < 0)
379 return ret;
380 } else {
381 if (pmic->current_power_mode[id] !=
382 pmic->enable_power_mode[id]) {
383 ret = max77620_regulator_set_power_mode(pmic,
384 pmic->enable_power_mode[id], id);
385 if (ret < 0)
386 return ret;
387 }
388 }
389
390 ret = max77620_regulator_set_fps_src(pmic, rpdata->active_fps_src, id);
391 if (ret < 0)
392 return ret;
393
394 ret = max77620_regulator_set_fps_slots(pmic, id, false);
395 if (ret < 0)
396 return ret;
397
398 if (rpdata->ramp_rate_setting) {
399 ret = max77620_set_slew_rate(pmic, id,
400 rpdata->ramp_rate_setting);
401 if (ret < 0)
402 return ret;
403 }
404
405 return 0;
406 }
407
408 static int max77620_regulator_enable(struct regulator_dev *rdev)
409 {
410 struct max77620_regulator *pmic = rdev_get_drvdata(rdev);
411 int id = rdev_get_id(rdev);
412
413 if (pmic->active_fps_src[id] != MAX77620_FPS_SRC_NONE)
414 return 0;
415
416 return max77620_regulator_set_power_mode(pmic,
417 pmic->enable_power_mode[id], id);
418 }
419
420 static int max77620_regulator_disable(struct regulator_dev *rdev)
421 {
422 struct max77620_regulator *pmic = rdev_get_drvdata(rdev);
423 int id = rdev_get_id(rdev);
424
425 if (pmic->active_fps_src[id] != MAX77620_FPS_SRC_NONE)
426 return 0;
427
428 return max77620_regulator_set_power_mode(pmic,
429 MAX77620_POWER_MODE_DISABLE, id);
430 }
431
432 static int max77620_regulator_is_enabled(struct regulator_dev *rdev)
433 {
434 struct max77620_regulator *pmic = rdev_get_drvdata(rdev);
435 int id = rdev_get_id(rdev);
436 int ret = 1;
437
438 if (pmic->active_fps_src[id] != MAX77620_FPS_SRC_NONE)
439 return 1;
440
441 ret = max77620_regulator_get_power_mode(pmic, id);
442 if (ret < 0)
443 return ret;
444
445 if (ret != MAX77620_POWER_MODE_DISABLE)
446 return 1;
447
448 return 0;
449 }
450
451 static int max77620_regulator_set_mode(struct regulator_dev *rdev,
452 unsigned int mode)
453 {
454 struct max77620_regulator *pmic = rdev_get_drvdata(rdev);
455 int id = rdev_get_id(rdev);
456 struct max77620_regulator_info *rinfo = pmic->rinfo[id];
457 struct max77620_regulator_pdata *rpdata = &pmic->reg_pdata[id];
458 bool fpwm = false;
459 int power_mode;
460 int ret;
461 u8 val;
462
463 switch (mode) {
464 case REGULATOR_MODE_FAST:
465 fpwm = true;
466 power_mode = MAX77620_POWER_MODE_NORMAL;
467 break;
468
469 case REGULATOR_MODE_NORMAL:
470 power_mode = MAX77620_POWER_MODE_NORMAL;
471 break;
472
473 case REGULATOR_MODE_IDLE:
474 power_mode = MAX77620_POWER_MODE_LPM;
475 break;
476
477 default:
478 dev_err(pmic->dev, "Regulator %d mode %d is invalid\n",
479 id, mode);
480 return -EINVAL;
481 }
482
483 if (rinfo->type != MAX77620_REGULATOR_TYPE_SD)
484 goto skip_fpwm;
485
486 val = (fpwm) ? MAX77620_SD_FPWM_MASK : 0;
487 ret = regmap_update_bits(pmic->rmap, rinfo->cfg_addr,
488 MAX77620_SD_FPWM_MASK, val);
489 if (ret < 0) {
490 dev_err(pmic->dev, "Reg 0x%02x update failed: %d\n",
491 rinfo->cfg_addr, ret);
492 return ret;
493 }
494 rpdata->current_mode = mode;
495
496 skip_fpwm:
497 ret = max77620_regulator_set_power_mode(pmic, power_mode, id);
498 if (ret < 0)
499 return ret;
500
501 pmic->enable_power_mode[id] = power_mode;
502
503 return 0;
504 }
505
506 static unsigned int max77620_regulator_get_mode(struct regulator_dev *rdev)
507 {
508 struct max77620_regulator *pmic = rdev_get_drvdata(rdev);
509 int id = rdev_get_id(rdev);
510 struct max77620_regulator_info *rinfo = pmic->rinfo[id];
511 int fpwm = 0;
512 int ret;
513 int pm_mode, reg_mode;
514 unsigned int val;
515
516 ret = max77620_regulator_get_power_mode(pmic, id);
517 if (ret < 0)
518 return 0;
519
520 pm_mode = ret;
521
522 if (rinfo->type == MAX77620_REGULATOR_TYPE_SD) {
523 ret = regmap_read(pmic->rmap, rinfo->cfg_addr, &val);
524 if (ret < 0) {
525 dev_err(pmic->dev, "Reg 0x%02x read failed: %d\n",
526 rinfo->cfg_addr, ret);
527 return ret;
528 }
529 fpwm = !!(val & MAX77620_SD_FPWM_MASK);
530 }
531
532 switch (pm_mode) {
533 case MAX77620_POWER_MODE_NORMAL:
534 case MAX77620_POWER_MODE_DISABLE:
535 if (fpwm)
536 reg_mode = REGULATOR_MODE_FAST;
537 else
538 reg_mode = REGULATOR_MODE_NORMAL;
539 break;
540 case MAX77620_POWER_MODE_LPM:
541 case MAX77620_POWER_MODE_GLPM:
542 reg_mode = REGULATOR_MODE_IDLE;
543 break;
544 default:
545 return 0;
546 }
547
548 return reg_mode;
549 }
550
551 static int max77620_regulator_set_ramp_delay(struct regulator_dev *rdev,
552 int ramp_delay)
553 {
554 struct max77620_regulator *pmic = rdev_get_drvdata(rdev);
555 int id = rdev_get_id(rdev);
556 struct max77620_regulator_pdata *rpdata = &pmic->reg_pdata[id];
557
558 /* Device specific ramp rate setting tells that platform has
559 * different ramp rate from advertised value. In this case,
560 * do not configure anything and just return success.
561 */
562 if (rpdata->ramp_rate_setting)
563 return 0;
564
565 return max77620_set_slew_rate(pmic, id, ramp_delay);
566 }
567
568 static int max77620_of_parse_cb(struct device_node *np,
569 const struct regulator_desc *desc,
570 struct regulator_config *config)
571 {
572 struct max77620_regulator *pmic = config->driver_data;
573 struct max77620_regulator_pdata *rpdata = &pmic->reg_pdata[desc->id];
574 u32 pval;
575 int ret;
576
577 ret = of_property_read_u32(np, "maxim,active-fps-source", &pval);
578 rpdata->active_fps_src = (!ret) ? pval : MAX77620_FPS_SRC_DEF;
579
580 ret = of_property_read_u32(np, "maxim,active-fps-power-up-slot", &pval);
581 rpdata->active_fps_pu_slot = (!ret) ? pval : -1;
582
583 ret = of_property_read_u32(
584 np, "maxim,active-fps-power-down-slot", &pval);
585 rpdata->active_fps_pd_slot = (!ret) ? pval : -1;
586
587 ret = of_property_read_u32(np, "maxim,suspend-fps-source", &pval);
588 rpdata->suspend_fps_src = (!ret) ? pval : -1;
589
590 ret = of_property_read_u32(
591 np, "maxim,suspend-fps-power-up-slot", &pval);
592 rpdata->suspend_fps_pu_slot = (!ret) ? pval : -1;
593
594 ret = of_property_read_u32(
595 np, "maxim,suspend-fps-power-down-slot", &pval);
596 rpdata->suspend_fps_pd_slot = (!ret) ? pval : -1;
597
598 ret = of_property_read_u32(np, "maxim,ramp-rate-setting", &pval);
599 rpdata->ramp_rate_setting = (!ret) ? pval : 0;
600
601 return max77620_init_pmic(pmic, desc->id);
602 }
603
604 static struct regulator_ops max77620_regulator_ops = {
605 .is_enabled = max77620_regulator_is_enabled,
606 .enable = max77620_regulator_enable,
607 .disable = max77620_regulator_disable,
608 .list_voltage = regulator_list_voltage_linear,
609 .map_voltage = regulator_map_voltage_linear,
610 .get_voltage_sel = regulator_get_voltage_sel_regmap,
611 .set_voltage_sel = regulator_set_voltage_sel_regmap,
612 .set_mode = max77620_regulator_set_mode,
613 .get_mode = max77620_regulator_get_mode,
614 .set_ramp_delay = max77620_regulator_set_ramp_delay,
615 .set_voltage_time_sel = regulator_set_voltage_time_sel,
616 .set_active_discharge = regulator_set_active_discharge_regmap,
617 };
618
619 #define MAX77620_SD_CNF2_ROVS_EN_NONE 0
620 #define RAIL_SD(_id, _name, _sname, _volt_mask, _min_uV, _max_uV, \
621 _step_uV, _rs_add, _rs_mask) \
622 [MAX77620_REGULATOR_ID_##_id] = { \
623 .type = MAX77620_REGULATOR_TYPE_SD, \
624 .volt_addr = MAX77620_REG_##_id, \
625 .cfg_addr = MAX77620_REG_##_id##_CFG, \
626 .fps_addr = MAX77620_REG_FPS_##_id, \
627 .remote_sense_addr = _rs_add, \
628 .remote_sense_mask = MAX77620_SD_CNF2_ROVS_EN_##_rs_mask, \
629 .power_mode_mask = MAX77620_SD_POWER_MODE_MASK, \
630 .power_mode_shift = MAX77620_SD_POWER_MODE_SHIFT, \
631 .desc = { \
632 .name = max77620_rails(_name), \
633 .of_match = of_match_ptr(#_name), \
634 .regulators_node = of_match_ptr("regulators"), \
635 .of_parse_cb = max77620_of_parse_cb, \
636 .supply_name = _sname, \
637 .id = MAX77620_REGULATOR_ID_##_id, \
638 .ops = &max77620_regulator_ops, \
639 .n_voltages = ((_max_uV - _min_uV) / _step_uV) + 1, \
640 .min_uV = _min_uV, \
641 .uV_step = _step_uV, \
642 .enable_time = 500, \
643 .vsel_mask = MAX77620_##_volt_mask##_VOLT_MASK, \
644 .vsel_reg = MAX77620_REG_##_id, \
645 .active_discharge_off = 0, \
646 .active_discharge_on = MAX77620_SD_CFG1_ADE_ENABLE, \
647 .active_discharge_mask = MAX77620_SD_CFG1_ADE_MASK, \
648 .active_discharge_reg = MAX77620_REG_##_id##_CFG, \
649 .type = REGULATOR_VOLTAGE, \
650 }, \
651 }
652
653 #define RAIL_LDO(_id, _name, _sname, _type, _min_uV, _max_uV, _step_uV) \
654 [MAX77620_REGULATOR_ID_##_id] = { \
655 .type = MAX77620_REGULATOR_TYPE_LDO_##_type, \
656 .volt_addr = MAX77620_REG_##_id##_CFG, \
657 .cfg_addr = MAX77620_REG_##_id##_CFG2, \
658 .fps_addr = MAX77620_REG_FPS_##_id, \
659 .remote_sense_addr = 0xFF, \
660 .power_mode_mask = MAX77620_LDO_POWER_MODE_MASK, \
661 .power_mode_shift = MAX77620_LDO_POWER_MODE_SHIFT, \
662 .desc = { \
663 .name = max77620_rails(_name), \
664 .of_match = of_match_ptr(#_name), \
665 .regulators_node = of_match_ptr("regulators"), \
666 .of_parse_cb = max77620_of_parse_cb, \
667 .supply_name = _sname, \
668 .id = MAX77620_REGULATOR_ID_##_id, \
669 .ops = &max77620_regulator_ops, \
670 .n_voltages = ((_max_uV - _min_uV) / _step_uV) + 1, \
671 .min_uV = _min_uV, \
672 .uV_step = _step_uV, \
673 .enable_time = 500, \
674 .vsel_mask = MAX77620_LDO_VOLT_MASK, \
675 .vsel_reg = MAX77620_REG_##_id##_CFG, \
676 .active_discharge_off = 0, \
677 .active_discharge_on = MAX77620_LDO_CFG2_ADE_ENABLE, \
678 .active_discharge_mask = MAX77620_LDO_CFG2_ADE_MASK, \
679 .active_discharge_reg = MAX77620_REG_##_id##_CFG2, \
680 .type = REGULATOR_VOLTAGE, \
681 }, \
682 }
683
684 static struct max77620_regulator_info max77620_regs_info[MAX77620_NUM_REGS] = {
685 RAIL_SD(SD0, sd0, "in-sd0", SD0, 600000, 1400000, 12500, 0x22, SD0),
686 RAIL_SD(SD1, sd1, "in-sd1", SD1, 600000, 1550000, 12500, 0x22, SD1),
687 RAIL_SD(SD2, sd2, "in-sd2", SDX, 600000, 3787500, 12500, 0xFF, NONE),
688 RAIL_SD(SD3, sd3, "in-sd3", SDX, 600000, 3787500, 12500, 0xFF, NONE),
689
690 RAIL_LDO(LDO0, ldo0, "in-ldo0-1", N, 800000, 2375000, 25000),
691 RAIL_LDO(LDO1, ldo1, "in-ldo0-1", N, 800000, 2375000, 25000),
692 RAIL_LDO(LDO2, ldo2, "in-ldo2", P, 800000, 3950000, 50000),
693 RAIL_LDO(LDO3, ldo3, "in-ldo3-5", P, 800000, 3950000, 50000),
694 RAIL_LDO(LDO4, ldo4, "in-ldo4-6", P, 800000, 1587500, 12500),
695 RAIL_LDO(LDO5, ldo5, "in-ldo3-5", P, 800000, 3950000, 50000),
696 RAIL_LDO(LDO6, ldo6, "in-ldo4-6", P, 800000, 3950000, 50000),
697 RAIL_LDO(LDO7, ldo7, "in-ldo7-8", N, 800000, 3950000, 50000),
698 RAIL_LDO(LDO8, ldo8, "in-ldo7-8", N, 800000, 3950000, 50000),
699 };
700
701 static struct max77620_regulator_info max20024_regs_info[MAX77620_NUM_REGS] = {
702 RAIL_SD(SD0, sd0, "in-sd0", SD0, 800000, 1587500, 12500, 0x22, SD0),
703 RAIL_SD(SD1, sd1, "in-sd1", SD1, 600000, 3387500, 12500, 0x22, SD1),
704 RAIL_SD(SD2, sd2, "in-sd2", SDX, 600000, 3787500, 12500, 0xFF, NONE),
705 RAIL_SD(SD3, sd3, "in-sd3", SDX, 600000, 3787500, 12500, 0xFF, NONE),
706 RAIL_SD(SD4, sd4, "in-sd4", SDX, 600000, 3787500, 12500, 0xFF, NONE),
707
708 RAIL_LDO(LDO0, ldo0, "in-ldo0-1", N, 800000, 2375000, 25000),
709 RAIL_LDO(LDO1, ldo1, "in-ldo0-1", N, 800000, 2375000, 25000),
710 RAIL_LDO(LDO2, ldo2, "in-ldo2", P, 800000, 3950000, 50000),
711 RAIL_LDO(LDO3, ldo3, "in-ldo3-5", P, 800000, 3950000, 50000),
712 RAIL_LDO(LDO4, ldo4, "in-ldo4-6", P, 800000, 1587500, 12500),
713 RAIL_LDO(LDO5, ldo5, "in-ldo3-5", P, 800000, 3950000, 50000),
714 RAIL_LDO(LDO6, ldo6, "in-ldo4-6", P, 800000, 3950000, 50000),
715 RAIL_LDO(LDO7, ldo7, "in-ldo7-8", N, 800000, 3950000, 50000),
716 RAIL_LDO(LDO8, ldo8, "in-ldo7-8", N, 800000, 3950000, 50000),
717 };
718
719 static int max77620_regulator_probe(struct platform_device *pdev)
720 {
721 struct max77620_chip *max77620_chip = dev_get_drvdata(pdev->dev.parent);
722 struct max77620_regulator_info *rinfo;
723 struct device *dev = &pdev->dev;
724 struct regulator_config config = { };
725 struct max77620_regulator *pmic;
726 int ret = 0;
727 int id;
728
729 pmic = devm_kzalloc(dev, sizeof(*pmic), GFP_KERNEL);
730 if (!pmic)
731 return -ENOMEM;
732
733 platform_set_drvdata(pdev, pmic);
734 pmic->dev = dev;
735 pmic->rmap = max77620_chip->rmap;
736 if (!dev->of_node)
737 dev->of_node = pdev->dev.parent->of_node;
738
739 switch (max77620_chip->chip_id) {
740 case MAX77620:
741 rinfo = max77620_regs_info;
742 break;
743 default:
744 rinfo = max20024_regs_info;
745 break;
746 }
747
748 config.regmap = pmic->rmap;
749 config.dev = dev;
750 config.driver_data = pmic;
751
752 for (id = 0; id < MAX77620_NUM_REGS; id++) {
753 struct regulator_dev *rdev;
754 struct regulator_desc *rdesc;
755
756 if ((max77620_chip->chip_id == MAX77620) &&
757 (id == MAX77620_REGULATOR_ID_SD4))
758 continue;
759
760 rdesc = &rinfo[id].desc;
761 pmic->rinfo[id] = &max77620_regs_info[id];
762 pmic->enable_power_mode[id] = MAX77620_POWER_MODE_NORMAL;
763
764 ret = max77620_read_slew_rate(pmic, id);
765 if (ret < 0)
766 return ret;
767
768 rdev = devm_regulator_register(dev, rdesc, &config);
769 if (IS_ERR(rdev)) {
770 ret = PTR_ERR(rdev);
771 dev_err(dev, "Regulator registration %s failed: %d\n",
772 rdesc->name, ret);
773 return ret;
774 }
775 }
776
777 return 0;
778 }
779
780 #ifdef CONFIG_PM_SLEEP
781 static int max77620_regulator_suspend(struct device *dev)
782 {
783 struct max77620_regulator *pmic = dev_get_drvdata(dev);
784 struct max77620_regulator_pdata *reg_pdata;
785 int id;
786
787 for (id = 0; id < MAX77620_NUM_REGS; id++) {
788 reg_pdata = &pmic->reg_pdata[id];
789
790 max77620_regulator_set_fps_slots(pmic, id, true);
791 if (reg_pdata->suspend_fps_src < 0)
792 continue;
793
794 max77620_regulator_set_fps_src(pmic, reg_pdata->suspend_fps_src,
795 id);
796 }
797
798 return 0;
799 }
800
801 static int max77620_regulator_resume(struct device *dev)
802 {
803 struct max77620_regulator *pmic = dev_get_drvdata(dev);
804 struct max77620_regulator_pdata *reg_pdata;
805 int id;
806
807 for (id = 0; id < MAX77620_NUM_REGS; id++) {
808 reg_pdata = &pmic->reg_pdata[id];
809
810 max77620_regulator_set_fps_slots(pmic, id, false);
811 if (reg_pdata->active_fps_src < 0)
812 continue;
813 max77620_regulator_set_fps_src(pmic, reg_pdata->active_fps_src,
814 id);
815 }
816
817 return 0;
818 }
819 #endif
820
821 static const struct dev_pm_ops max77620_regulator_pm_ops = {
822 SET_SYSTEM_SLEEP_PM_OPS(max77620_regulator_suspend,
823 max77620_regulator_resume)
824 };
825
826 static const struct platform_device_id max77620_regulator_devtype[] = {
827 { .name = "max77620-pmic", },
828 { .name = "max20024-pmic", },
829 {},
830 };
831 MODULE_DEVICE_TABLE(platform, max77620_regulator_devtype);
832
833 static struct platform_driver max77620_regulator_driver = {
834 .probe = max77620_regulator_probe,
835 .id_table = max77620_regulator_devtype,
836 .driver = {
837 .name = "max77620-pmic",
838 .pm = &max77620_regulator_pm_ops,
839 },
840 };
841
842 module_platform_driver(max77620_regulator_driver);
843
844 MODULE_DESCRIPTION("MAX77620/MAX20024 regulator driver");
845 MODULE_AUTHOR("Mallikarjun Kasoju <mkasoju@nvidia.com>");
846 MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
847 MODULE_LICENSE("GPL v2");
Linux with added FPC-III support