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16#include <linux/kernel.h>
17#include <linux/module.h>
18#include <linux/init.h>
19#include <linux/err.h>
20#include <linux/platform_device.h>
21#include <linux/regulator/driver.h>
22#include <linux/regulator/machine.h>
23#include <linux/slab.h>
24#include <linux/regmap.h>
25#include <linux/mfd/palmas.h>
26#include <linux/of.h>
27#include <linux/of_platform.h>
28#include <linux/regulator/of_regulator.h>
29
30struct regs_info {
31 char *name;
32 char *sname;
33 u8 vsel_addr;
34 u8 ctrl_addr;
35 u8 tstep_addr;
36 int sleep_id;
37};
38
39static const struct regulator_linear_range smps_low_ranges[] = {
40 REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
41 REGULATOR_LINEAR_RANGE(500000, 0x1, 0x6, 0),
42 REGULATOR_LINEAR_RANGE(510000, 0x7, 0x79, 10000),
43 REGULATOR_LINEAR_RANGE(1650000, 0x7A, 0x7f, 0),
44};
45
46static const struct regulator_linear_range smps_high_ranges[] = {
47 REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
48 REGULATOR_LINEAR_RANGE(1000000, 0x1, 0x6, 0),
49 REGULATOR_LINEAR_RANGE(1020000, 0x7, 0x79, 20000),
50 REGULATOR_LINEAR_RANGE(3300000, 0x7A, 0x7f, 0),
51};
52
53static const struct regs_info palmas_regs_info[] = {
54 {
55 .name = "SMPS12",
56 .sname = "smps1-in",
57 .vsel_addr = PALMAS_SMPS12_VOLTAGE,
58 .ctrl_addr = PALMAS_SMPS12_CTRL,
59 .tstep_addr = PALMAS_SMPS12_TSTEP,
60 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS12,
61 },
62 {
63 .name = "SMPS123",
64 .sname = "smps1-in",
65 .vsel_addr = PALMAS_SMPS12_VOLTAGE,
66 .ctrl_addr = PALMAS_SMPS12_CTRL,
67 .tstep_addr = PALMAS_SMPS12_TSTEP,
68 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS12,
69 },
70 {
71 .name = "SMPS3",
72 .sname = "smps3-in",
73 .vsel_addr = PALMAS_SMPS3_VOLTAGE,
74 .ctrl_addr = PALMAS_SMPS3_CTRL,
75 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS3,
76 },
77 {
78 .name = "SMPS45",
79 .sname = "smps4-in",
80 .vsel_addr = PALMAS_SMPS45_VOLTAGE,
81 .ctrl_addr = PALMAS_SMPS45_CTRL,
82 .tstep_addr = PALMAS_SMPS45_TSTEP,
83 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS45,
84 },
85 {
86 .name = "SMPS457",
87 .sname = "smps4-in",
88 .vsel_addr = PALMAS_SMPS45_VOLTAGE,
89 .ctrl_addr = PALMAS_SMPS45_CTRL,
90 .tstep_addr = PALMAS_SMPS45_TSTEP,
91 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS45,
92 },
93 {
94 .name = "SMPS6",
95 .sname = "smps6-in",
96 .vsel_addr = PALMAS_SMPS6_VOLTAGE,
97 .ctrl_addr = PALMAS_SMPS6_CTRL,
98 .tstep_addr = PALMAS_SMPS6_TSTEP,
99 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS6,
100 },
101 {
102 .name = "SMPS7",
103 .sname = "smps7-in",
104 .vsel_addr = PALMAS_SMPS7_VOLTAGE,
105 .ctrl_addr = PALMAS_SMPS7_CTRL,
106 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS7,
107 },
108 {
109 .name = "SMPS8",
110 .sname = "smps8-in",
111 .vsel_addr = PALMAS_SMPS8_VOLTAGE,
112 .ctrl_addr = PALMAS_SMPS8_CTRL,
113 .tstep_addr = PALMAS_SMPS8_TSTEP,
114 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS8,
115 },
116 {
117 .name = "SMPS9",
118 .sname = "smps9-in",
119 .vsel_addr = PALMAS_SMPS9_VOLTAGE,
120 .ctrl_addr = PALMAS_SMPS9_CTRL,
121 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS9,
122 },
123 {
124 .name = "SMPS10_OUT2",
125 .sname = "smps10-in",
126 .ctrl_addr = PALMAS_SMPS10_CTRL,
127 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS10,
128 },
129 {
130 .name = "SMPS10_OUT1",
131 .sname = "smps10-out2",
132 .ctrl_addr = PALMAS_SMPS10_CTRL,
133 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS10,
134 },
135 {
136 .name = "LDO1",
137 .sname = "ldo1-in",
138 .vsel_addr = PALMAS_LDO1_VOLTAGE,
139 .ctrl_addr = PALMAS_LDO1_CTRL,
140 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO1,
141 },
142 {
143 .name = "LDO2",
144 .sname = "ldo2-in",
145 .vsel_addr = PALMAS_LDO2_VOLTAGE,
146 .ctrl_addr = PALMAS_LDO2_CTRL,
147 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO2,
148 },
149 {
150 .name = "LDO3",
151 .sname = "ldo3-in",
152 .vsel_addr = PALMAS_LDO3_VOLTAGE,
153 .ctrl_addr = PALMAS_LDO3_CTRL,
154 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO3,
155 },
156 {
157 .name = "LDO4",
158 .sname = "ldo4-in",
159 .vsel_addr = PALMAS_LDO4_VOLTAGE,
160 .ctrl_addr = PALMAS_LDO4_CTRL,
161 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO4,
162 },
163 {
164 .name = "LDO5",
165 .sname = "ldo5-in",
166 .vsel_addr = PALMAS_LDO5_VOLTAGE,
167 .ctrl_addr = PALMAS_LDO5_CTRL,
168 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO5,
169 },
170 {
171 .name = "LDO6",
172 .sname = "ldo6-in",
173 .vsel_addr = PALMAS_LDO6_VOLTAGE,
174 .ctrl_addr = PALMAS_LDO6_CTRL,
175 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO6,
176 },
177 {
178 .name = "LDO7",
179 .sname = "ldo7-in",
180 .vsel_addr = PALMAS_LDO7_VOLTAGE,
181 .ctrl_addr = PALMAS_LDO7_CTRL,
182 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO7,
183 },
184 {
185 .name = "LDO8",
186 .sname = "ldo8-in",
187 .vsel_addr = PALMAS_LDO8_VOLTAGE,
188 .ctrl_addr = PALMAS_LDO8_CTRL,
189 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO8,
190 },
191 {
192 .name = "LDO9",
193 .sname = "ldo9-in",
194 .vsel_addr = PALMAS_LDO9_VOLTAGE,
195 .ctrl_addr = PALMAS_LDO9_CTRL,
196 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO9,
197 },
198 {
199 .name = "LDOLN",
200 .sname = "ldoln-in",
201 .vsel_addr = PALMAS_LDOLN_VOLTAGE,
202 .ctrl_addr = PALMAS_LDOLN_CTRL,
203 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDOLN,
204 },
205 {
206 .name = "LDOUSB",
207 .sname = "ldousb-in",
208 .vsel_addr = PALMAS_LDOUSB_VOLTAGE,
209 .ctrl_addr = PALMAS_LDOUSB_CTRL,
210 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDOUSB,
211 },
212 {
213 .name = "REGEN1",
214 .ctrl_addr = PALMAS_REGEN1_CTRL,
215 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_REGEN1,
216 },
217 {
218 .name = "REGEN2",
219 .ctrl_addr = PALMAS_REGEN2_CTRL,
220 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_REGEN2,
221 },
222 {
223 .name = "REGEN3",
224 .ctrl_addr = PALMAS_REGEN3_CTRL,
225 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_REGEN3,
226 },
227 {
228 .name = "SYSEN1",
229 .ctrl_addr = PALMAS_SYSEN1_CTRL,
230 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SYSEN1,
231 },
232 {
233 .name = "SYSEN2",
234 .ctrl_addr = PALMAS_SYSEN2_CTRL,
235 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SYSEN2,
236 },
237};
238
239static unsigned int palmas_smps_ramp_delay[4] = {0, 10000, 5000, 2500};
240
241#define SMPS_CTRL_MODE_OFF 0x00
242#define SMPS_CTRL_MODE_ON 0x01
243#define SMPS_CTRL_MODE_ECO 0x02
244#define SMPS_CTRL_MODE_PWM 0x03
245
246#define PALMAS_SMPS_NUM_VOLTAGES 122
247#define PALMAS_SMPS10_NUM_VOLTAGES 2
248#define PALMAS_LDO_NUM_VOLTAGES 50
249
250#define SMPS10_VSEL (1<<3)
251#define SMPS10_BOOST_EN (1<<2)
252#define SMPS10_BYPASS_EN (1<<1)
253#define SMPS10_SWITCH_EN (1<<0)
254
255#define REGULATOR_SLAVE 0
256
257static int palmas_smps_read(struct palmas *palmas, unsigned int reg,
258 unsigned int *dest)
259{
260 unsigned int addr;
261
262 addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg);
263
264 return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest);
265}
266
267static int palmas_smps_write(struct palmas *palmas, unsigned int reg,
268 unsigned int value)
269{
270 unsigned int addr;
271
272 addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg);
273
274 return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value);
275}
276
277static int palmas_ldo_read(struct palmas *palmas, unsigned int reg,
278 unsigned int *dest)
279{
280 unsigned int addr;
281
282 addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg);
283
284 return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest);
285}
286
287static int palmas_ldo_write(struct palmas *palmas, unsigned int reg,
288 unsigned int value)
289{
290 unsigned int addr;
291
292 addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg);
293
294 return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value);
295}
296
297static int palmas_set_mode_smps(struct regulator_dev *dev, unsigned int mode)
298{
299 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
300 int id = rdev_get_id(dev);
301 unsigned int reg;
302 bool rail_enable = true;
303
304 palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®);
305 reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
306
307 if (reg == SMPS_CTRL_MODE_OFF)
308 rail_enable = false;
309
310 switch (mode) {
311 case REGULATOR_MODE_NORMAL:
312 reg |= SMPS_CTRL_MODE_ON;
313 break;
314 case REGULATOR_MODE_IDLE:
315 reg |= SMPS_CTRL_MODE_ECO;
316 break;
317 case REGULATOR_MODE_FAST:
318 reg |= SMPS_CTRL_MODE_PWM;
319 break;
320 default:
321 return -EINVAL;
322 }
323
324 pmic->current_reg_mode[id] = reg & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
325 if (rail_enable)
326 palmas_smps_write(pmic->palmas,
327 palmas_regs_info[id].ctrl_addr, reg);
328
329
330 pmic->desc[id].enable_val = pmic->current_reg_mode[id];
331
332 return 0;
333}
334
335static unsigned int palmas_get_mode_smps(struct regulator_dev *dev)
336{
337 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
338 int id = rdev_get_id(dev);
339 unsigned int reg;
340
341 reg = pmic->current_reg_mode[id] & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
342
343 switch (reg) {
344 case SMPS_CTRL_MODE_ON:
345 return REGULATOR_MODE_NORMAL;
346 case SMPS_CTRL_MODE_ECO:
347 return REGULATOR_MODE_IDLE;
348 case SMPS_CTRL_MODE_PWM:
349 return REGULATOR_MODE_FAST;
350 }
351
352 return 0;
353}
354
355static int palmas_smps_set_ramp_delay(struct regulator_dev *rdev,
356 int ramp_delay)
357{
358 struct palmas_pmic *pmic = rdev_get_drvdata(rdev);
359 int id = rdev_get_id(rdev);
360 unsigned int reg = 0;
361 unsigned int addr = palmas_regs_info[id].tstep_addr;
362 int ret;
363
364
365 switch (id) {
366 case PALMAS_REG_SMPS3:
367 case PALMAS_REG_SMPS7:
368 return 0;
369 }
370
371 if (ramp_delay <= 0)
372 reg = 0;
373 else if (ramp_delay <= 2500)
374 reg = 3;
375 else if (ramp_delay <= 5000)
376 reg = 2;
377 else
378 reg = 1;
379
380 ret = palmas_smps_write(pmic->palmas, addr, reg);
381 if (ret < 0) {
382 dev_err(pmic->palmas->dev, "TSTEP write failed: %d\n", ret);
383 return ret;
384 }
385
386 pmic->ramp_delay[id] = palmas_smps_ramp_delay[reg];
387 return ret;
388}
389
390static struct regulator_ops palmas_ops_smps = {
391 .is_enabled = regulator_is_enabled_regmap,
392 .enable = regulator_enable_regmap,
393 .disable = regulator_disable_regmap,
394 .set_mode = palmas_set_mode_smps,
395 .get_mode = palmas_get_mode_smps,
396 .get_voltage_sel = regulator_get_voltage_sel_regmap,
397 .set_voltage_sel = regulator_set_voltage_sel_regmap,
398 .list_voltage = regulator_list_voltage_linear_range,
399 .map_voltage = regulator_map_voltage_linear_range,
400 .set_voltage_time_sel = regulator_set_voltage_time_sel,
401 .set_ramp_delay = palmas_smps_set_ramp_delay,
402};
403
404static struct regulator_ops palmas_ops_ext_control_smps = {
405 .set_mode = palmas_set_mode_smps,
406 .get_mode = palmas_get_mode_smps,
407 .get_voltage_sel = regulator_get_voltage_sel_regmap,
408 .set_voltage_sel = regulator_set_voltage_sel_regmap,
409 .list_voltage = regulator_list_voltage_linear_range,
410 .map_voltage = regulator_map_voltage_linear_range,
411 .set_voltage_time_sel = regulator_set_voltage_time_sel,
412 .set_ramp_delay = palmas_smps_set_ramp_delay,
413};
414
415static struct regulator_ops palmas_ops_smps10 = {
416 .is_enabled = regulator_is_enabled_regmap,
417 .enable = regulator_enable_regmap,
418 .disable = regulator_disable_regmap,
419 .get_voltage_sel = regulator_get_voltage_sel_regmap,
420 .set_voltage_sel = regulator_set_voltage_sel_regmap,
421 .list_voltage = regulator_list_voltage_linear,
422 .map_voltage = regulator_map_voltage_linear,
423 .set_bypass = regulator_set_bypass_regmap,
424 .get_bypass = regulator_get_bypass_regmap,
425};
426
427static int palmas_is_enabled_ldo(struct regulator_dev *dev)
428{
429 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
430 int id = rdev_get_id(dev);
431 unsigned int reg;
432
433 palmas_ldo_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®);
434
435 reg &= PALMAS_LDO1_CTRL_STATUS;
436
437 return !!(reg);
438}
439
440static struct regulator_ops palmas_ops_ldo = {
441 .is_enabled = palmas_is_enabled_ldo,
442 .enable = regulator_enable_regmap,
443 .disable = regulator_disable_regmap,
444 .get_voltage_sel = regulator_get_voltage_sel_regmap,
445 .set_voltage_sel = regulator_set_voltage_sel_regmap,
446 .list_voltage = regulator_list_voltage_linear,
447 .map_voltage = regulator_map_voltage_linear,
448};
449
450static struct regulator_ops palmas_ops_ext_control_ldo = {
451 .get_voltage_sel = regulator_get_voltage_sel_regmap,
452 .set_voltage_sel = regulator_set_voltage_sel_regmap,
453 .list_voltage = regulator_list_voltage_linear,
454 .map_voltage = regulator_map_voltage_linear,
455};
456
457static struct regulator_ops palmas_ops_extreg = {
458 .is_enabled = regulator_is_enabled_regmap,
459 .enable = regulator_enable_regmap,
460 .disable = regulator_disable_regmap,
461};
462
463static struct regulator_ops palmas_ops_ext_control_extreg = {
464};
465
466static int palmas_regulator_config_external(struct palmas *palmas, int id,
467 struct palmas_reg_init *reg_init)
468{
469 int sleep_id = palmas_regs_info[id].sleep_id;
470 int ret;
471
472 ret = palmas_ext_control_req_config(palmas, sleep_id,
473 reg_init->roof_floor, true);
474 if (ret < 0)
475 dev_err(palmas->dev,
476 "Ext control config for regulator %d failed %d\n",
477 id, ret);
478 return ret;
479}
480
481
482
483
484
485
486
487static int palmas_smps_init(struct palmas *palmas, int id,
488 struct palmas_reg_init *reg_init)
489{
490 unsigned int reg;
491 unsigned int addr;
492 int ret;
493
494 addr = palmas_regs_info[id].ctrl_addr;
495
496 ret = palmas_smps_read(palmas, addr, ®);
497 if (ret)
498 return ret;
499
500 switch (id) {
501 case PALMAS_REG_SMPS10_OUT1:
502 case PALMAS_REG_SMPS10_OUT2:
503 reg &= ~PALMAS_SMPS10_CTRL_MODE_SLEEP_MASK;
504 if (reg_init->mode_sleep)
505 reg |= reg_init->mode_sleep <<
506 PALMAS_SMPS10_CTRL_MODE_SLEEP_SHIFT;
507 break;
508 default:
509 if (reg_init->warm_reset)
510 reg |= PALMAS_SMPS12_CTRL_WR_S;
511 else
512 reg &= ~PALMAS_SMPS12_CTRL_WR_S;
513
514 if (reg_init->roof_floor)
515 reg |= PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN;
516 else
517 reg &= ~PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN;
518
519 reg &= ~PALMAS_SMPS12_CTRL_MODE_SLEEP_MASK;
520 if (reg_init->mode_sleep)
521 reg |= reg_init->mode_sleep <<
522 PALMAS_SMPS12_CTRL_MODE_SLEEP_SHIFT;
523 }
524
525 ret = palmas_smps_write(palmas, addr, reg);
526 if (ret)
527 return ret;
528
529 if (palmas_regs_info[id].vsel_addr && reg_init->vsel) {
530 addr = palmas_regs_info[id].vsel_addr;
531
532 reg = reg_init->vsel;
533
534 ret = palmas_smps_write(palmas, addr, reg);
535 if (ret)
536 return ret;
537 }
538
539 if (reg_init->roof_floor && (id != PALMAS_REG_SMPS10_OUT1) &&
540 (id != PALMAS_REG_SMPS10_OUT2)) {
541
542 addr = palmas_regs_info[id].ctrl_addr;
543 ret = palmas_smps_read(palmas, addr, ®);
544 if (ret < 0)
545 return ret;
546
547 if (!(reg & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK)) {
548 reg |= SMPS_CTRL_MODE_ON;
549 ret = palmas_smps_write(palmas, addr, reg);
550 if (ret < 0)
551 return ret;
552 }
553 return palmas_regulator_config_external(palmas, id, reg_init);
554 }
555 return 0;
556}
557
558static int palmas_ldo_init(struct palmas *palmas, int id,
559 struct palmas_reg_init *reg_init)
560{
561 unsigned int reg;
562 unsigned int addr;
563 int ret;
564
565 addr = palmas_regs_info[id].ctrl_addr;
566
567 ret = palmas_ldo_read(palmas, addr, ®);
568 if (ret)
569 return ret;
570
571 if (reg_init->warm_reset)
572 reg |= PALMAS_LDO1_CTRL_WR_S;
573 else
574 reg &= ~PALMAS_LDO1_CTRL_WR_S;
575
576 if (reg_init->mode_sleep)
577 reg |= PALMAS_LDO1_CTRL_MODE_SLEEP;
578 else
579 reg &= ~PALMAS_LDO1_CTRL_MODE_SLEEP;
580
581 ret = palmas_ldo_write(palmas, addr, reg);
582 if (ret)
583 return ret;
584
585 if (reg_init->roof_floor) {
586
587 addr = palmas_regs_info[id].ctrl_addr;
588 ret = palmas_update_bits(palmas, PALMAS_LDO_BASE,
589 addr, PALMAS_LDO1_CTRL_MODE_ACTIVE,
590 PALMAS_LDO1_CTRL_MODE_ACTIVE);
591 if (ret < 0) {
592 dev_err(palmas->dev,
593 "LDO Register 0x%02x update failed %d\n",
594 addr, ret);
595 return ret;
596 }
597 return palmas_regulator_config_external(palmas, id, reg_init);
598 }
599 return 0;
600}
601
602static int palmas_extreg_init(struct palmas *palmas, int id,
603 struct palmas_reg_init *reg_init)
604{
605 unsigned int addr;
606 int ret;
607 unsigned int val = 0;
608
609 addr = palmas_regs_info[id].ctrl_addr;
610
611 if (reg_init->mode_sleep)
612 val = PALMAS_REGEN1_CTRL_MODE_SLEEP;
613
614 ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE,
615 addr, PALMAS_REGEN1_CTRL_MODE_SLEEP, val);
616 if (ret < 0) {
617 dev_err(palmas->dev, "Resource reg 0x%02x update failed %d\n",
618 addr, ret);
619 return ret;
620 }
621
622 if (reg_init->roof_floor) {
623
624 addr = palmas_regs_info[id].ctrl_addr;
625 ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE,
626 addr, PALMAS_REGEN1_CTRL_MODE_ACTIVE,
627 PALMAS_REGEN1_CTRL_MODE_ACTIVE);
628 if (ret < 0) {
629 dev_err(palmas->dev,
630 "Resource Register 0x%02x update failed %d\n",
631 addr, ret);
632 return ret;
633 }
634 return palmas_regulator_config_external(palmas, id, reg_init);
635 }
636 return 0;
637}
638
639static void palmas_enable_ldo8_track(struct palmas *palmas)
640{
641 unsigned int reg;
642 unsigned int addr;
643 int ret;
644
645 addr = palmas_regs_info[PALMAS_REG_LDO8].ctrl_addr;
646
647 ret = palmas_ldo_read(palmas, addr, ®);
648 if (ret) {
649 dev_err(palmas->dev, "Error in reading ldo8 control reg\n");
650 return;
651 }
652
653 reg |= PALMAS_LDO8_CTRL_LDO_TRACKING_EN;
654 ret = palmas_ldo_write(palmas, addr, reg);
655 if (ret < 0) {
656 dev_err(palmas->dev, "Error in enabling tracking mode\n");
657 return;
658 }
659
660
661
662
663
664 addr = palmas_regs_info[PALMAS_REG_LDO8].vsel_addr;
665 ret = palmas_ldo_read(palmas, addr, ®);
666 if (ret) {
667 dev_err(palmas->dev, "Error in reading ldo8 voltage reg\n");
668 return;
669 }
670
671 reg = (reg << 1) & PALMAS_LDO8_VOLTAGE_VSEL_MASK;
672 ret = palmas_ldo_write(palmas, addr, reg);
673 if (ret < 0)
674 dev_err(palmas->dev, "Error in setting ldo8 voltage reg\n");
675
676 return;
677}
678
679static struct of_regulator_match palmas_matches[] = {
680 { .name = "smps12", },
681 { .name = "smps123", },
682 { .name = "smps3", },
683 { .name = "smps45", },
684 { .name = "smps457", },
685 { .name = "smps6", },
686 { .name = "smps7", },
687 { .name = "smps8", },
688 { .name = "smps9", },
689 { .name = "smps10_out2", },
690 { .name = "smps10_out1", },
691 { .name = "ldo1", },
692 { .name = "ldo2", },
693 { .name = "ldo3", },
694 { .name = "ldo4", },
695 { .name = "ldo5", },
696 { .name = "ldo6", },
697 { .name = "ldo7", },
698 { .name = "ldo8", },
699 { .name = "ldo9", },
700 { .name = "ldoln", },
701 { .name = "ldousb", },
702 { .name = "regen1", },
703 { .name = "regen2", },
704 { .name = "regen3", },
705 { .name = "sysen1", },
706 { .name = "sysen2", },
707};
708
709static void palmas_dt_to_pdata(struct device *dev,
710 struct device_node *node,
711 struct palmas_pmic_platform_data *pdata)
712{
713 struct device_node *regulators;
714 u32 prop;
715 int idx, ret;
716
717 node = of_node_get(node);
718 regulators = of_get_child_by_name(node, "regulators");
719 if (!regulators) {
720 dev_info(dev, "regulator node not found\n");
721 return;
722 }
723
724 ret = of_regulator_match(dev, regulators, palmas_matches,
725 PALMAS_NUM_REGS);
726 of_node_put(regulators);
727 if (ret < 0) {
728 dev_err(dev, "Error parsing regulator init data: %d\n", ret);
729 return;
730 }
731
732 for (idx = 0; idx < PALMAS_NUM_REGS; idx++) {
733 if (!palmas_matches[idx].init_data ||
734 !palmas_matches[idx].of_node)
735 continue;
736
737 pdata->reg_data[idx] = palmas_matches[idx].init_data;
738
739 pdata->reg_init[idx] = devm_kzalloc(dev,
740 sizeof(struct palmas_reg_init), GFP_KERNEL);
741
742 pdata->reg_init[idx]->warm_reset =
743 of_property_read_bool(palmas_matches[idx].of_node,
744 "ti,warm-reset");
745
746 ret = of_property_read_u32(palmas_matches[idx].of_node,
747 "ti,roof-floor", &prop);
748
749 if (ret != -EINVAL) {
750 int econtrol;
751
752
753 econtrol = PALMAS_EXT_CONTROL_NSLEEP;
754 if (!ret) {
755 switch (prop) {
756 case 1:
757 econtrol = PALMAS_EXT_CONTROL_ENABLE1;
758 break;
759 case 2:
760 econtrol = PALMAS_EXT_CONTROL_ENABLE2;
761 break;
762 case 3:
763 econtrol = PALMAS_EXT_CONTROL_NSLEEP;
764 break;
765 default:
766 WARN_ON(1);
767 dev_warn(dev,
768 "%s: Invalid roof-floor option: %u\n",
769 palmas_matches[idx].name, prop);
770 break;
771 }
772 }
773 pdata->reg_init[idx]->roof_floor = econtrol;
774 }
775
776 ret = of_property_read_u32(palmas_matches[idx].of_node,
777 "ti,mode-sleep", &prop);
778 if (!ret)
779 pdata->reg_init[idx]->mode_sleep = prop;
780
781 ret = of_property_read_bool(palmas_matches[idx].of_node,
782 "ti,smps-range");
783 if (ret)
784 pdata->reg_init[idx]->vsel =
785 PALMAS_SMPS12_VOLTAGE_RANGE;
786
787 if (idx == PALMAS_REG_LDO8)
788 pdata->enable_ldo8_tracking = of_property_read_bool(
789 palmas_matches[idx].of_node,
790 "ti,enable-ldo8-tracking");
791 }
792
793 pdata->ldo6_vibrator = of_property_read_bool(node, "ti,ldo6-vibrator");
794}
795
796
797static int palmas_regulators_probe(struct platform_device *pdev)
798{
799 struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
800 struct palmas_pmic_platform_data *pdata = dev_get_platdata(&pdev->dev);
801 struct device_node *node = pdev->dev.of_node;
802 struct regulator_dev *rdev;
803 struct regulator_config config = { };
804 struct palmas_pmic *pmic;
805 struct palmas_reg_init *reg_init;
806 int id = 0, ret;
807 unsigned int addr, reg;
808
809 if (node && !pdata) {
810 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
811
812 if (!pdata)
813 return -ENOMEM;
814
815 palmas_dt_to_pdata(&pdev->dev, node, pdata);
816 }
817
818 pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
819 if (!pmic)
820 return -ENOMEM;
821
822 pmic->dev = &pdev->dev;
823 pmic->palmas = palmas;
824 palmas->pmic = pmic;
825 platform_set_drvdata(pdev, pmic);
826
827 ret = palmas_smps_read(palmas, PALMAS_SMPS_CTRL, ®);
828 if (ret)
829 return ret;
830
831 if (reg & PALMAS_SMPS_CTRL_SMPS12_SMPS123_EN)
832 pmic->smps123 = 1;
833
834 if (reg & PALMAS_SMPS_CTRL_SMPS45_SMPS457_EN)
835 pmic->smps457 = 1;
836
837 config.regmap = palmas->regmap[REGULATOR_SLAVE];
838 config.dev = &pdev->dev;
839 config.driver_data = pmic;
840
841 for (id = 0; id < PALMAS_REG_LDO1; id++) {
842 bool ramp_delay_support = false;
843
844
845
846
847
848 switch (id) {
849 case PALMAS_REG_SMPS12:
850 case PALMAS_REG_SMPS3:
851 if (pmic->smps123)
852 continue;
853 if (id == PALMAS_REG_SMPS12)
854 ramp_delay_support = true;
855 break;
856 case PALMAS_REG_SMPS123:
857 if (!pmic->smps123)
858 continue;
859 ramp_delay_support = true;
860 break;
861 case PALMAS_REG_SMPS45:
862 case PALMAS_REG_SMPS7:
863 if (pmic->smps457)
864 continue;
865 if (id == PALMAS_REG_SMPS45)
866 ramp_delay_support = true;
867 break;
868 case PALMAS_REG_SMPS457:
869 if (!pmic->smps457)
870 continue;
871 ramp_delay_support = true;
872 break;
873 case PALMAS_REG_SMPS10_OUT1:
874 case PALMAS_REG_SMPS10_OUT2:
875 if (!PALMAS_PMIC_HAS(palmas, SMPS10_BOOST))
876 continue;
877 }
878
879 if ((id == PALMAS_REG_SMPS6) || (id == PALMAS_REG_SMPS8))
880 ramp_delay_support = true;
881
882 if (ramp_delay_support) {
883 addr = palmas_regs_info[id].tstep_addr;
884 ret = palmas_smps_read(pmic->palmas, addr, ®);
885 if (ret < 0) {
886 dev_err(&pdev->dev,
887 "reading TSTEP reg failed: %d\n", ret);
888 return ret;
889 }
890 pmic->desc[id].ramp_delay =
891 palmas_smps_ramp_delay[reg & 0x3];
892 pmic->ramp_delay[id] = pmic->desc[id].ramp_delay;
893 }
894
895
896 if (pdata && pdata->reg_init[id]) {
897 reg_init = pdata->reg_init[id];
898 ret = palmas_smps_init(palmas, id, reg_init);
899 if (ret)
900 return ret;
901 } else {
902 reg_init = NULL;
903 }
904
905
906 pmic->desc[id].name = palmas_regs_info[id].name;
907 pmic->desc[id].id = id;
908
909 switch (id) {
910 case PALMAS_REG_SMPS10_OUT1:
911 case PALMAS_REG_SMPS10_OUT2:
912 pmic->desc[id].n_voltages = PALMAS_SMPS10_NUM_VOLTAGES;
913 pmic->desc[id].ops = &palmas_ops_smps10;
914 pmic->desc[id].vsel_reg =
915 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
916 PALMAS_SMPS10_CTRL);
917 pmic->desc[id].vsel_mask = SMPS10_VSEL;
918 pmic->desc[id].enable_reg =
919 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
920 PALMAS_SMPS10_CTRL);
921 if (id == PALMAS_REG_SMPS10_OUT1)
922 pmic->desc[id].enable_mask = SMPS10_SWITCH_EN;
923 else
924 pmic->desc[id].enable_mask = SMPS10_BOOST_EN;
925 pmic->desc[id].bypass_reg =
926 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
927 PALMAS_SMPS10_CTRL);
928 pmic->desc[id].bypass_mask = SMPS10_BYPASS_EN;
929 pmic->desc[id].min_uV = 3750000;
930 pmic->desc[id].uV_step = 1250000;
931 break;
932 default:
933
934
935
936
937
938
939 addr = palmas_regs_info[id].vsel_addr;
940 pmic->desc[id].n_linear_ranges = 3;
941
942 ret = palmas_smps_read(pmic->palmas, addr, ®);
943 if (ret)
944 return ret;
945 if (reg & PALMAS_SMPS12_VOLTAGE_RANGE)
946 pmic->range[id] = 1;
947 if (pmic->range[id])
948 pmic->desc[id].linear_ranges = smps_high_ranges;
949 else
950 pmic->desc[id].linear_ranges = smps_low_ranges;
951
952 if (reg_init && reg_init->roof_floor)
953 pmic->desc[id].ops =
954 &palmas_ops_ext_control_smps;
955 else
956 pmic->desc[id].ops = &palmas_ops_smps;
957 pmic->desc[id].n_voltages = PALMAS_SMPS_NUM_VOLTAGES;
958 pmic->desc[id].vsel_reg =
959 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
960 palmas_regs_info[id].vsel_addr);
961 pmic->desc[id].vsel_mask =
962 PALMAS_SMPS12_VOLTAGE_VSEL_MASK;
963
964
965 addr = palmas_regs_info[id].ctrl_addr;
966 ret = palmas_smps_read(pmic->palmas, addr, ®);
967 if (ret)
968 return ret;
969 pmic->current_reg_mode[id] = reg &
970 PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
971
972 pmic->desc[id].enable_reg =
973 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
974 palmas_regs_info[id].ctrl_addr);
975 pmic->desc[id].enable_mask =
976 PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
977
978 pmic->desc[id].enable_val = SMPS_CTRL_MODE_ON;
979 }
980
981 pmic->desc[id].type = REGULATOR_VOLTAGE;
982 pmic->desc[id].owner = THIS_MODULE;
983
984 if (pdata)
985 config.init_data = pdata->reg_data[id];
986 else
987 config.init_data = NULL;
988
989 pmic->desc[id].supply_name = palmas_regs_info[id].sname;
990 config.of_node = palmas_matches[id].of_node;
991
992 rdev = devm_regulator_register(&pdev->dev, &pmic->desc[id],
993 &config);
994 if (IS_ERR(rdev)) {
995 dev_err(&pdev->dev,
996 "failed to register %s regulator\n",
997 pdev->name);
998 return PTR_ERR(rdev);
999 }
1000
1001
1002 pmic->rdev[id] = rdev;
1003 }
1004
1005
1006 for (; id < PALMAS_NUM_REGS; id++) {
1007 if (pdata && pdata->reg_init[id])
1008 reg_init = pdata->reg_init[id];
1009 else
1010 reg_init = NULL;
1011
1012
1013
1014
1015
1016
1017 pmic->desc[id].name = palmas_regs_info[id].name;
1018 pmic->desc[id].id = id;
1019 pmic->desc[id].type = REGULATOR_VOLTAGE;
1020 pmic->desc[id].owner = THIS_MODULE;
1021
1022 if (id < PALMAS_REG_REGEN1) {
1023 pmic->desc[id].n_voltages = PALMAS_LDO_NUM_VOLTAGES;
1024 if (reg_init && reg_init->roof_floor)
1025 pmic->desc[id].ops =
1026 &palmas_ops_ext_control_ldo;
1027 else
1028 pmic->desc[id].ops = &palmas_ops_ldo;
1029 pmic->desc[id].min_uV = 900000;
1030 pmic->desc[id].uV_step = 50000;
1031 pmic->desc[id].linear_min_sel = 1;
1032 pmic->desc[id].enable_time = 500;
1033 pmic->desc[id].vsel_reg =
1034 PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
1035 palmas_regs_info[id].vsel_addr);
1036 pmic->desc[id].vsel_mask =
1037 PALMAS_LDO1_VOLTAGE_VSEL_MASK;
1038 pmic->desc[id].enable_reg =
1039 PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
1040 palmas_regs_info[id].ctrl_addr);
1041 pmic->desc[id].enable_mask =
1042 PALMAS_LDO1_CTRL_MODE_ACTIVE;
1043
1044
1045 if (pdata && (id == PALMAS_REG_LDO8) &&
1046 pdata->enable_ldo8_tracking) {
1047 palmas_enable_ldo8_track(palmas);
1048 pmic->desc[id].min_uV = 450000;
1049 pmic->desc[id].uV_step = 25000;
1050 }
1051
1052
1053 if (pdata && pdata->ldo6_vibrator &&
1054 (id == PALMAS_REG_LDO6))
1055 pmic->desc[id].enable_time = 2000;
1056 } else {
1057 pmic->desc[id].n_voltages = 1;
1058 if (reg_init && reg_init->roof_floor)
1059 pmic->desc[id].ops =
1060 &palmas_ops_ext_control_extreg;
1061 else
1062 pmic->desc[id].ops = &palmas_ops_extreg;
1063 pmic->desc[id].enable_reg =
1064 PALMAS_BASE_TO_REG(PALMAS_RESOURCE_BASE,
1065 palmas_regs_info[id].ctrl_addr);
1066 pmic->desc[id].enable_mask =
1067 PALMAS_REGEN1_CTRL_MODE_ACTIVE;
1068 }
1069
1070 if (pdata)
1071 config.init_data = pdata->reg_data[id];
1072 else
1073 config.init_data = NULL;
1074
1075 pmic->desc[id].supply_name = palmas_regs_info[id].sname;
1076 config.of_node = palmas_matches[id].of_node;
1077
1078 rdev = devm_regulator_register(&pdev->dev, &pmic->desc[id],
1079 &config);
1080 if (IS_ERR(rdev)) {
1081 dev_err(&pdev->dev,
1082 "failed to register %s regulator\n",
1083 pdev->name);
1084 return PTR_ERR(rdev);
1085 }
1086
1087
1088 pmic->rdev[id] = rdev;
1089
1090
1091 if (pdata) {
1092 reg_init = pdata->reg_init[id];
1093 if (reg_init) {
1094 if (id < PALMAS_REG_REGEN1)
1095 ret = palmas_ldo_init(palmas,
1096 id, reg_init);
1097 else
1098 ret = palmas_extreg_init(palmas,
1099 id, reg_init);
1100 if (ret)
1101 return ret;
1102 }
1103 }
1104 }
1105
1106
1107 return 0;
1108}
1109
1110static const struct of_device_id of_palmas_match_tbl[] = {
1111 { .compatible = "ti,palmas-pmic", },
1112 { .compatible = "ti,twl6035-pmic", },
1113 { .compatible = "ti,twl6036-pmic", },
1114 { .compatible = "ti,twl6037-pmic", },
1115 { .compatible = "ti,tps65913-pmic", },
1116 { .compatible = "ti,tps65914-pmic", },
1117 { .compatible = "ti,tps80036-pmic", },
1118 { .compatible = "ti,tps659038-pmic", },
1119 { }
1120};
1121
1122static struct platform_driver palmas_driver = {
1123 .driver = {
1124 .name = "palmas-pmic",
1125 .of_match_table = of_palmas_match_tbl,
1126 .owner = THIS_MODULE,
1127 },
1128 .probe = palmas_regulators_probe,
1129};
1130
1131static int __init palmas_init(void)
1132{
1133 return platform_driver_register(&palmas_driver);
1134}
1135subsys_initcall(palmas_init);
1136
1137static void __exit palmas_exit(void)
1138{
1139 platform_driver_unregister(&palmas_driver);
1140}
1141module_exit(palmas_exit);
1142
1143MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
1144MODULE_DESCRIPTION("Palmas voltage regulator driver");
1145MODULE_LICENSE("GPL");
1146MODULE_ALIAS("platform:palmas-pmic");
1147MODULE_DEVICE_TABLE(of, of_palmas_match_tbl);
1148
