1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Arizona core driver
4 *
5 * Copyright 2012 Wolfson Microelectronics plc
6 *
7 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
8 */
9
10 #include <linux/clk.h>
11 #include <linux/delay.h>
12 #include <linux/err.h>
13 #include <linux/gpio/consumer.h>
14 #include <linux/interrupt.h>
15 #include <linux/mfd/core.h>
16 #include <linux/module.h>
17 #include <linux/of.h>
18 #include <linux/of_device.h>
19 #include <linux/pm_runtime.h>
20 #include <linux/regmap.h>
21 #include <linux/regulator/consumer.h>
22 #include <linux/regulator/machine.h>
23 #include <linux/slab.h>
24 #include <linux/ktime.h>
25 #include <linux/platform_device.h>
26
27 #include <linux/mfd/arizona/core.h>
28 #include <linux/mfd/arizona/registers.h>
29
30 #include "arizona.h"
31
32 static const char * const wm5102_core_supplies[] = {
33 "AVDD",
34 "DBVDD1",
35 };
36
arizona_clk32k_enable(struct arizona * arizona)37 int arizona_clk32k_enable(struct arizona *arizona)
38 {
39 int ret = 0;
40
41 mutex_lock(&arizona->clk_lock);
42
43 arizona->clk32k_ref++;
44
45 if (arizona->clk32k_ref == 1) {
46 switch (arizona->pdata.clk32k_src) {
47 case ARIZONA_32KZ_MCLK1:
48 ret = pm_runtime_resume_and_get(arizona->dev);
49 if (ret != 0)
50 goto err_ref;
51 ret = clk_prepare_enable(arizona->mclk[ARIZONA_MCLK1]);
52 if (ret != 0) {
53 pm_runtime_put_sync(arizona->dev);
54 goto err_ref;
55 }
56 break;
57 case ARIZONA_32KZ_MCLK2:
58 ret = clk_prepare_enable(arizona->mclk[ARIZONA_MCLK2]);
59 if (ret != 0)
60 goto err_ref;
61 break;
62 }
63
64 ret = regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
65 ARIZONA_CLK_32K_ENA,
66 ARIZONA_CLK_32K_ENA);
67 }
68
69 err_ref:
70 if (ret != 0)
71 arizona->clk32k_ref--;
72
73 mutex_unlock(&arizona->clk_lock);
74
75 return ret;
76 }
77 EXPORT_SYMBOL_GPL(arizona_clk32k_enable);
78
arizona_clk32k_disable(struct arizona * arizona)79 int arizona_clk32k_disable(struct arizona *arizona)
80 {
81 mutex_lock(&arizona->clk_lock);
82
83 WARN_ON(arizona->clk32k_ref <= 0);
84
85 arizona->clk32k_ref--;
86
87 if (arizona->clk32k_ref == 0) {
88 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
89 ARIZONA_CLK_32K_ENA, 0);
90
91 switch (arizona->pdata.clk32k_src) {
92 case ARIZONA_32KZ_MCLK1:
93 pm_runtime_put_sync(arizona->dev);
94 clk_disable_unprepare(arizona->mclk[ARIZONA_MCLK1]);
95 break;
96 case ARIZONA_32KZ_MCLK2:
97 clk_disable_unprepare(arizona->mclk[ARIZONA_MCLK2]);
98 break;
99 }
100 }
101
102 mutex_unlock(&arizona->clk_lock);
103
104 return 0;
105 }
106 EXPORT_SYMBOL_GPL(arizona_clk32k_disable);
107
arizona_clkgen_err(int irq,void * data)108 static irqreturn_t arizona_clkgen_err(int irq, void *data)
109 {
110 struct arizona *arizona = data;
111
112 dev_err(arizona->dev, "CLKGEN error\n");
113
114 return IRQ_HANDLED;
115 }
116
arizona_underclocked(int irq,void * data)117 static irqreturn_t arizona_underclocked(int irq, void *data)
118 {
119 struct arizona *arizona = data;
120 unsigned int val;
121 int ret;
122
123 ret = regmap_read(arizona->regmap, ARIZONA_INTERRUPT_RAW_STATUS_8,
124 &val);
125 if (ret != 0) {
126 dev_err(arizona->dev, "Failed to read underclock status: %d\n",
127 ret);
128 return IRQ_NONE;
129 }
130
131 if (val & ARIZONA_AIF3_UNDERCLOCKED_STS)
132 dev_err(arizona->dev, "AIF3 underclocked\n");
133 if (val & ARIZONA_AIF2_UNDERCLOCKED_STS)
134 dev_err(arizona->dev, "AIF2 underclocked\n");
135 if (val & ARIZONA_AIF1_UNDERCLOCKED_STS)
136 dev_err(arizona->dev, "AIF1 underclocked\n");
137 if (val & ARIZONA_ISRC3_UNDERCLOCKED_STS)
138 dev_err(arizona->dev, "ISRC3 underclocked\n");
139 if (val & ARIZONA_ISRC2_UNDERCLOCKED_STS)
140 dev_err(arizona->dev, "ISRC2 underclocked\n");
141 if (val & ARIZONA_ISRC1_UNDERCLOCKED_STS)
142 dev_err(arizona->dev, "ISRC1 underclocked\n");
143 if (val & ARIZONA_FX_UNDERCLOCKED_STS)
144 dev_err(arizona->dev, "FX underclocked\n");
145 if (val & ARIZONA_ASRC_UNDERCLOCKED_STS)
146 dev_err(arizona->dev, "ASRC underclocked\n");
147 if (val & ARIZONA_DAC_UNDERCLOCKED_STS)
148 dev_err(arizona->dev, "DAC underclocked\n");
149 if (val & ARIZONA_ADC_UNDERCLOCKED_STS)
150 dev_err(arizona->dev, "ADC underclocked\n");
151 if (val & ARIZONA_MIXER_UNDERCLOCKED_STS)
152 dev_err(arizona->dev, "Mixer dropped sample\n");
153
154 return IRQ_HANDLED;
155 }
156
arizona_overclocked(int irq,void * data)157 static irqreturn_t arizona_overclocked(int irq, void *data)
158 {
159 struct arizona *arizona = data;
160 unsigned int val[3];
161 int ret;
162
163 ret = regmap_bulk_read(arizona->regmap, ARIZONA_INTERRUPT_RAW_STATUS_6,
164 &val[0], 3);
165 if (ret != 0) {
166 dev_err(arizona->dev, "Failed to read overclock status: %d\n",
167 ret);
168 return IRQ_NONE;
169 }
170
171 switch (arizona->type) {
172 case WM8998:
173 case WM1814:
174 /* Some bits are shifted on WM8998,
175 * rearrange to match the standard bit layout
176 */
177 val[0] = ((val[0] & 0x60e0) >> 1) |
178 ((val[0] & 0x1e00) >> 2) |
179 (val[0] & 0x000f);
180 break;
181 default:
182 break;
183 }
184
185 if (val[0] & ARIZONA_PWM_OVERCLOCKED_STS)
186 dev_err(arizona->dev, "PWM overclocked\n");
187 if (val[0] & ARIZONA_FX_CORE_OVERCLOCKED_STS)
188 dev_err(arizona->dev, "FX core overclocked\n");
189 if (val[0] & ARIZONA_DAC_SYS_OVERCLOCKED_STS)
190 dev_err(arizona->dev, "DAC SYS overclocked\n");
191 if (val[0] & ARIZONA_DAC_WARP_OVERCLOCKED_STS)
192 dev_err(arizona->dev, "DAC WARP overclocked\n");
193 if (val[0] & ARIZONA_ADC_OVERCLOCKED_STS)
194 dev_err(arizona->dev, "ADC overclocked\n");
195 if (val[0] & ARIZONA_MIXER_OVERCLOCKED_STS)
196 dev_err(arizona->dev, "Mixer overclocked\n");
197 if (val[0] & ARIZONA_AIF3_SYNC_OVERCLOCKED_STS)
198 dev_err(arizona->dev, "AIF3 overclocked\n");
199 if (val[0] & ARIZONA_AIF2_SYNC_OVERCLOCKED_STS)
200 dev_err(arizona->dev, "AIF2 overclocked\n");
201 if (val[0] & ARIZONA_AIF1_SYNC_OVERCLOCKED_STS)
202 dev_err(arizona->dev, "AIF1 overclocked\n");
203 if (val[0] & ARIZONA_PAD_CTRL_OVERCLOCKED_STS)
204 dev_err(arizona->dev, "Pad control overclocked\n");
205
206 if (val[1] & ARIZONA_SLIMBUS_SUBSYS_OVERCLOCKED_STS)
207 dev_err(arizona->dev, "Slimbus subsystem overclocked\n");
208 if (val[1] & ARIZONA_SLIMBUS_ASYNC_OVERCLOCKED_STS)
209 dev_err(arizona->dev, "Slimbus async overclocked\n");
210 if (val[1] & ARIZONA_SLIMBUS_SYNC_OVERCLOCKED_STS)
211 dev_err(arizona->dev, "Slimbus sync overclocked\n");
212 if (val[1] & ARIZONA_ASRC_ASYNC_SYS_OVERCLOCKED_STS)
213 dev_err(arizona->dev, "ASRC async system overclocked\n");
214 if (val[1] & ARIZONA_ASRC_ASYNC_WARP_OVERCLOCKED_STS)
215 dev_err(arizona->dev, "ASRC async WARP overclocked\n");
216 if (val[1] & ARIZONA_ASRC_SYNC_SYS_OVERCLOCKED_STS)
217 dev_err(arizona->dev, "ASRC sync system overclocked\n");
218 if (val[1] & ARIZONA_ASRC_SYNC_WARP_OVERCLOCKED_STS)
219 dev_err(arizona->dev, "ASRC sync WARP overclocked\n");
220 if (val[1] & ARIZONA_ADSP2_1_OVERCLOCKED_STS)
221 dev_err(arizona->dev, "DSP1 overclocked\n");
222 if (val[1] & ARIZONA_ISRC3_OVERCLOCKED_STS)
223 dev_err(arizona->dev, "ISRC3 overclocked\n");
224 if (val[1] & ARIZONA_ISRC2_OVERCLOCKED_STS)
225 dev_err(arizona->dev, "ISRC2 overclocked\n");
226 if (val[1] & ARIZONA_ISRC1_OVERCLOCKED_STS)
227 dev_err(arizona->dev, "ISRC1 overclocked\n");
228
229 if (val[2] & ARIZONA_SPDIF_OVERCLOCKED_STS)
230 dev_err(arizona->dev, "SPDIF overclocked\n");
231
232 return IRQ_HANDLED;
233 }
234
235 #define ARIZONA_REG_POLL_DELAY_US 7500
236
arizona_poll_reg_delay(ktime_t timeout)237 static inline bool arizona_poll_reg_delay(ktime_t timeout)
238 {
239 if (ktime_compare(ktime_get(), timeout) > 0)
240 return false;
241
242 usleep_range(ARIZONA_REG_POLL_DELAY_US / 2, ARIZONA_REG_POLL_DELAY_US);
243
244 return true;
245 }
246
arizona_poll_reg(struct arizona * arizona,int timeout_ms,unsigned int reg,unsigned int mask,unsigned int target)247 static int arizona_poll_reg(struct arizona *arizona,
248 int timeout_ms, unsigned int reg,
249 unsigned int mask, unsigned int target)
250 {
251 ktime_t timeout = ktime_add_us(ktime_get(), timeout_ms * USEC_PER_MSEC);
252 unsigned int val = 0;
253 int ret;
254
255 do {
256 ret = regmap_read(arizona->regmap, reg, &val);
257
258 if ((val & mask) == target)
259 return 0;
260 } while (arizona_poll_reg_delay(timeout));
261
262 if (ret) {
263 dev_err(arizona->dev, "Failed polling reg 0x%x: %d\n",
264 reg, ret);
265 return ret;
266 }
267
268 dev_err(arizona->dev, "Polling reg 0x%x timed out: %x\n", reg, val);
269 return -ETIMEDOUT;
270 }
271
arizona_wait_for_boot(struct arizona * arizona)272 static int arizona_wait_for_boot(struct arizona *arizona)
273 {
274 int ret;
275
276 /*
277 * We can't use an interrupt as we need to runtime resume to do so,
278 * we won't race with the interrupt handler as it'll be blocked on
279 * runtime resume.
280 */
281 ret = arizona_poll_reg(arizona, 30, ARIZONA_INTERRUPT_RAW_STATUS_5,
282 ARIZONA_BOOT_DONE_STS, ARIZONA_BOOT_DONE_STS);
283
284 if (!ret)
285 regmap_write(arizona->regmap, ARIZONA_INTERRUPT_STATUS_5,
286 ARIZONA_BOOT_DONE_STS);
287
288 pm_runtime_mark_last_busy(arizona->dev);
289
290 return ret;
291 }
292
arizona_enable_reset(struct arizona * arizona)293 static inline void arizona_enable_reset(struct arizona *arizona)
294 {
295 if (arizona->pdata.reset)
296 gpiod_set_raw_value_cansleep(arizona->pdata.reset, 0);
297 }
298
arizona_disable_reset(struct arizona * arizona)299 static void arizona_disable_reset(struct arizona *arizona)
300 {
301 if (arizona->pdata.reset) {
302 switch (arizona->type) {
303 case WM5110:
304 case WM8280:
305 /* Meet requirements for minimum reset duration */
306 usleep_range(5000, 10000);
307 break;
308 default:
309 break;
310 }
311
312 gpiod_set_raw_value_cansleep(arizona->pdata.reset, 1);
313 usleep_range(1000, 5000);
314 }
315 }
316
317 struct arizona_sysclk_state {
318 unsigned int fll;
319 unsigned int sysclk;
320 };
321
arizona_enable_freerun_sysclk(struct arizona * arizona,struct arizona_sysclk_state * state)322 static int arizona_enable_freerun_sysclk(struct arizona *arizona,
323 struct arizona_sysclk_state *state)
324 {
325 int ret, err;
326
327 /* Cache existing FLL and SYSCLK settings */
328 ret = regmap_read(arizona->regmap, ARIZONA_FLL1_CONTROL_1, &state->fll);
329 if (ret) {
330 dev_err(arizona->dev, "Failed to cache FLL settings: %d\n",
331 ret);
332 return ret;
333 }
334 ret = regmap_read(arizona->regmap, ARIZONA_SYSTEM_CLOCK_1,
335 &state->sysclk);
336 if (ret) {
337 dev_err(arizona->dev, "Failed to cache SYSCLK settings: %d\n",
338 ret);
339 return ret;
340 }
341
342 /* Start up SYSCLK using the FLL in free running mode */
343 ret = regmap_write(arizona->regmap, ARIZONA_FLL1_CONTROL_1,
344 ARIZONA_FLL1_ENA | ARIZONA_FLL1_FREERUN);
345 if (ret) {
346 dev_err(arizona->dev,
347 "Failed to start FLL in freerunning mode: %d\n",
348 ret);
349 return ret;
350 }
351 ret = arizona_poll_reg(arizona, 180, ARIZONA_INTERRUPT_RAW_STATUS_5,
352 ARIZONA_FLL1_CLOCK_OK_STS,
353 ARIZONA_FLL1_CLOCK_OK_STS);
354 if (ret)
355 goto err_fll;
356
357 ret = regmap_write(arizona->regmap, ARIZONA_SYSTEM_CLOCK_1, 0x0144);
358 if (ret) {
359 dev_err(arizona->dev, "Failed to start SYSCLK: %d\n", ret);
360 goto err_fll;
361 }
362
363 return 0;
364
365 err_fll:
366 err = regmap_write(arizona->regmap, ARIZONA_FLL1_CONTROL_1, state->fll);
367 if (err)
368 dev_err(arizona->dev,
369 "Failed to re-apply old FLL settings: %d\n", err);
370
371 return ret;
372 }
373
arizona_disable_freerun_sysclk(struct arizona * arizona,struct arizona_sysclk_state * state)374 static int arizona_disable_freerun_sysclk(struct arizona *arizona,
375 struct arizona_sysclk_state *state)
376 {
377 int ret;
378
379 ret = regmap_write(arizona->regmap, ARIZONA_SYSTEM_CLOCK_1,
380 state->sysclk);
381 if (ret) {
382 dev_err(arizona->dev,
383 "Failed to re-apply old SYSCLK settings: %d\n", ret);
384 return ret;
385 }
386
387 ret = regmap_write(arizona->regmap, ARIZONA_FLL1_CONTROL_1, state->fll);
388 if (ret) {
389 dev_err(arizona->dev,
390 "Failed to re-apply old FLL settings: %d\n", ret);
391 return ret;
392 }
393
394 return 0;
395 }
396
wm5102_apply_hardware_patch(struct arizona * arizona)397 static int wm5102_apply_hardware_patch(struct arizona *arizona)
398 {
399 struct arizona_sysclk_state state;
400 int err, ret;
401
402 ret = arizona_enable_freerun_sysclk(arizona, &state);
403 if (ret)
404 return ret;
405
406 /* Start the write sequencer and wait for it to finish */
407 ret = regmap_write(arizona->regmap, ARIZONA_WRITE_SEQUENCER_CTRL_0,
408 ARIZONA_WSEQ_ENA | ARIZONA_WSEQ_START | 160);
409 if (ret) {
410 dev_err(arizona->dev, "Failed to start write sequencer: %d\n",
411 ret);
412 goto err;
413 }
414
415 ret = arizona_poll_reg(arizona, 30, ARIZONA_WRITE_SEQUENCER_CTRL_1,
416 ARIZONA_WSEQ_BUSY, 0);
417 if (ret)
418 regmap_write(arizona->regmap, ARIZONA_WRITE_SEQUENCER_CTRL_0,
419 ARIZONA_WSEQ_ABORT);
420
421 err:
422 err = arizona_disable_freerun_sysclk(arizona, &state);
423
424 return ret ?: err;
425 }
426
427 /*
428 * Register patch to some of the CODECs internal write sequences
429 * to ensure a clean exit from the low power sleep state.
430 */
431 static const struct reg_sequence wm5110_sleep_patch[] = {
432 { 0x337A, 0xC100 },
433 { 0x337B, 0x0041 },
434 { 0x3300, 0xA210 },
435 { 0x3301, 0x050C },
436 };
437
wm5110_apply_sleep_patch(struct arizona * arizona)438 static int wm5110_apply_sleep_patch(struct arizona *arizona)
439 {
440 struct arizona_sysclk_state state;
441 int err, ret;
442
443 ret = arizona_enable_freerun_sysclk(arizona, &state);
444 if (ret)
445 return ret;
446
447 ret = regmap_multi_reg_write_bypassed(arizona->regmap,
448 wm5110_sleep_patch,
449 ARRAY_SIZE(wm5110_sleep_patch));
450
451 err = arizona_disable_freerun_sysclk(arizona, &state);
452
453 return ret ?: err;
454 }
455
wm5102_clear_write_sequencer(struct arizona * arizona)456 static int wm5102_clear_write_sequencer(struct arizona *arizona)
457 {
458 int ret;
459
460 ret = regmap_write(arizona->regmap, ARIZONA_WRITE_SEQUENCER_CTRL_3,
461 0x0);
462 if (ret) {
463 dev_err(arizona->dev,
464 "Failed to clear write sequencer state: %d\n", ret);
465 return ret;
466 }
467
468 arizona_enable_reset(arizona);
469 regulator_disable(arizona->dcvdd);
470
471 msleep(20);
472
473 ret = regulator_enable(arizona->dcvdd);
474 if (ret) {
475 dev_err(arizona->dev, "Failed to re-enable DCVDD: %d\n", ret);
476 return ret;
477 }
478 arizona_disable_reset(arizona);
479
480 return 0;
481 }
482
arizona_isolate_dcvdd(struct arizona * arizona)483 static int arizona_isolate_dcvdd(struct arizona *arizona)
484 {
485 int ret;
486
487 ret = regmap_update_bits(arizona->regmap,
488 ARIZONA_ISOLATION_CONTROL,
489 ARIZONA_ISOLATE_DCVDD1,
490 ARIZONA_ISOLATE_DCVDD1);
491 if (ret != 0)
492 dev_err(arizona->dev, "Failed to isolate DCVDD: %d\n", ret);
493
494 return ret;
495 }
496
arizona_connect_dcvdd(struct arizona * arizona)497 static int arizona_connect_dcvdd(struct arizona *arizona)
498 {
499 int ret;
500
501 ret = regmap_update_bits(arizona->regmap,
502 ARIZONA_ISOLATION_CONTROL,
503 ARIZONA_ISOLATE_DCVDD1, 0);
504 if (ret != 0)
505 dev_err(arizona->dev, "Failed to connect DCVDD: %d\n", ret);
506
507 return ret;
508 }
509
arizona_is_jack_det_active(struct arizona * arizona)510 static int arizona_is_jack_det_active(struct arizona *arizona)
511 {
512 unsigned int val;
513 int ret;
514
515 ret = regmap_read(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE, &val);
516 if (ret) {
517 dev_err(arizona->dev,
518 "Failed to check jack det status: %d\n", ret);
519 return ret;
520 } else if (val & ARIZONA_JD1_ENA) {
521 return 1;
522 } else {
523 return 0;
524 }
525 }
526
arizona_runtime_resume(struct device * dev)527 static int arizona_runtime_resume(struct device *dev)
528 {
529 struct arizona *arizona = dev_get_drvdata(dev);
530 int ret;
531
532 dev_dbg(arizona->dev, "Leaving AoD mode\n");
533
534 if (arizona->has_fully_powered_off) {
535 dev_dbg(arizona->dev, "Re-enabling core supplies\n");
536
537 ret = regulator_bulk_enable(arizona->num_core_supplies,
538 arizona->core_supplies);
539 if (ret) {
540 dev_err(dev, "Failed to enable core supplies: %d\n",
541 ret);
542 return ret;
543 }
544 }
545
546 ret = regulator_enable(arizona->dcvdd);
547 if (ret != 0) {
548 dev_err(arizona->dev, "Failed to enable DCVDD: %d\n", ret);
549 if (arizona->has_fully_powered_off)
550 regulator_bulk_disable(arizona->num_core_supplies,
551 arizona->core_supplies);
552 return ret;
553 }
554
555 if (arizona->has_fully_powered_off) {
556 arizona_disable_reset(arizona);
557 enable_irq(arizona->irq);
558 arizona->has_fully_powered_off = false;
559 }
560
561 regcache_cache_only(arizona->regmap, false);
562
563 switch (arizona->type) {
564 case WM5102:
565 if (arizona->external_dcvdd) {
566 ret = arizona_connect_dcvdd(arizona);
567 if (ret != 0)
568 goto err;
569 }
570
571 ret = wm5102_patch(arizona);
572 if (ret != 0) {
573 dev_err(arizona->dev, "Failed to apply patch: %d\n",
574 ret);
575 goto err;
576 }
577
578 ret = wm5102_apply_hardware_patch(arizona);
579 if (ret) {
580 dev_err(arizona->dev,
581 "Failed to apply hardware patch: %d\n",
582 ret);
583 goto err;
584 }
585 break;
586 case WM5110:
587 case WM8280:
588 ret = arizona_wait_for_boot(arizona);
589 if (ret)
590 goto err;
591
592 if (arizona->external_dcvdd) {
593 ret = arizona_connect_dcvdd(arizona);
594 if (ret != 0)
595 goto err;
596 } else {
597 /*
598 * As this is only called for the internal regulator
599 * (where we know voltage ranges available) it is ok
600 * to request an exact range.
601 */
602 ret = regulator_set_voltage(arizona->dcvdd,
603 1200000, 1200000);
604 if (ret < 0) {
605 dev_err(arizona->dev,
606 "Failed to set resume voltage: %d\n",
607 ret);
608 goto err;
609 }
610 }
611
612 ret = wm5110_apply_sleep_patch(arizona);
613 if (ret) {
614 dev_err(arizona->dev,
615 "Failed to re-apply sleep patch: %d\n",
616 ret);
617 goto err;
618 }
619 break;
620 case WM1831:
621 case CS47L24:
622 ret = arizona_wait_for_boot(arizona);
623 if (ret != 0)
624 goto err;
625 break;
626 default:
627 ret = arizona_wait_for_boot(arizona);
628 if (ret != 0)
629 goto err;
630
631 if (arizona->external_dcvdd) {
632 ret = arizona_connect_dcvdd(arizona);
633 if (ret != 0)
634 goto err;
635 }
636 break;
637 }
638
639 ret = regcache_sync(arizona->regmap);
640 if (ret != 0) {
641 dev_err(arizona->dev, "Failed to restore register cache\n");
642 goto err;
643 }
644
645 return 0;
646
647 err:
648 regcache_cache_only(arizona->regmap, true);
649 regulator_disable(arizona->dcvdd);
650 return ret;
651 }
652
arizona_runtime_suspend(struct device * dev)653 static int arizona_runtime_suspend(struct device *dev)
654 {
655 struct arizona *arizona = dev_get_drvdata(dev);
656 int jd_active = 0;
657 int ret;
658
659 dev_dbg(arizona->dev, "Entering AoD mode\n");
660
661 switch (arizona->type) {
662 case WM5110:
663 case WM8280:
664 jd_active = arizona_is_jack_det_active(arizona);
665 if (jd_active < 0)
666 return jd_active;
667
668 if (arizona->external_dcvdd) {
669 ret = arizona_isolate_dcvdd(arizona);
670 if (ret != 0)
671 return ret;
672 } else {
673 /*
674 * As this is only called for the internal regulator
675 * (where we know voltage ranges available) it is ok
676 * to request an exact range.
677 */
678 ret = regulator_set_voltage(arizona->dcvdd,
679 1175000, 1175000);
680 if (ret < 0) {
681 dev_err(arizona->dev,
682 "Failed to set suspend voltage: %d\n",
683 ret);
684 return ret;
685 }
686 }
687 break;
688 case WM5102:
689 jd_active = arizona_is_jack_det_active(arizona);
690 if (jd_active < 0)
691 return jd_active;
692
693 if (arizona->external_dcvdd) {
694 ret = arizona_isolate_dcvdd(arizona);
695 if (ret != 0)
696 return ret;
697 }
698
699 if (!jd_active) {
700 ret = regmap_write(arizona->regmap,
701 ARIZONA_WRITE_SEQUENCER_CTRL_3, 0x0);
702 if (ret) {
703 dev_err(arizona->dev,
704 "Failed to clear write sequencer: %d\n",
705 ret);
706 return ret;
707 }
708 }
709 break;
710 case WM1831:
711 case CS47L24:
712 break;
713 default:
714 jd_active = arizona_is_jack_det_active(arizona);
715 if (jd_active < 0)
716 return jd_active;
717
718 if (arizona->external_dcvdd) {
719 ret = arizona_isolate_dcvdd(arizona);
720 if (ret != 0)
721 return ret;
722 }
723 break;
724 }
725
726 regcache_cache_only(arizona->regmap, true);
727 regcache_mark_dirty(arizona->regmap);
728 regulator_disable(arizona->dcvdd);
729
730 /* Allow us to completely power down if no jack detection */
731 if (!jd_active) {
732 dev_dbg(arizona->dev, "Fully powering off\n");
733
734 arizona->has_fully_powered_off = true;
735
736 disable_irq_nosync(arizona->irq);
737 arizona_enable_reset(arizona);
738 regulator_bulk_disable(arizona->num_core_supplies,
739 arizona->core_supplies);
740 }
741
742 return 0;
743 }
744
arizona_suspend(struct device * dev)745 static int arizona_suspend(struct device *dev)
746 {
747 struct arizona *arizona = dev_get_drvdata(dev);
748
749 dev_dbg(arizona->dev, "Suspend, disabling IRQ\n");
750 disable_irq(arizona->irq);
751
752 return 0;
753 }
754
arizona_suspend_noirq(struct device * dev)755 static int arizona_suspend_noirq(struct device *dev)
756 {
757 struct arizona *arizona = dev_get_drvdata(dev);
758
759 dev_dbg(arizona->dev, "Late suspend, reenabling IRQ\n");
760 enable_irq(arizona->irq);
761
762 return 0;
763 }
764
arizona_resume_noirq(struct device * dev)765 static int arizona_resume_noirq(struct device *dev)
766 {
767 struct arizona *arizona = dev_get_drvdata(dev);
768
769 dev_dbg(arizona->dev, "Early resume, disabling IRQ\n");
770 disable_irq(arizona->irq);
771
772 return 0;
773 }
774
arizona_resume(struct device * dev)775 static int arizona_resume(struct device *dev)
776 {
777 struct arizona *arizona = dev_get_drvdata(dev);
778
779 dev_dbg(arizona->dev, "Resume, reenabling IRQ\n");
780 enable_irq(arizona->irq);
781
782 return 0;
783 }
784
785 EXPORT_GPL_DEV_PM_OPS(arizona_pm_ops) = {
786 RUNTIME_PM_OPS(arizona_runtime_suspend,
787 arizona_runtime_resume,
788 NULL)
789 SYSTEM_SLEEP_PM_OPS(arizona_suspend, arizona_resume)
790 NOIRQ_SYSTEM_SLEEP_PM_OPS(arizona_suspend_noirq,
791 arizona_resume_noirq)
792 };
793
794 #ifdef CONFIG_OF
arizona_of_get_core_pdata(struct arizona * arizona)795 static int arizona_of_get_core_pdata(struct arizona *arizona)
796 {
797 struct arizona_pdata *pdata = &arizona->pdata;
798 int ret, i;
799
800 /* Handle old non-standard DT binding */
801 pdata->reset = devm_gpiod_get(arizona->dev, "wlf,reset", GPIOD_OUT_LOW);
802 if (IS_ERR(pdata->reset)) {
803 ret = PTR_ERR(pdata->reset);
804
805 /*
806 * Reset missing will be caught when other binding is read
807 * but all other errors imply this binding is in use but has
808 * encountered a problem so should be handled.
809 */
810 if (ret == -EPROBE_DEFER)
811 return ret;
812 else if (ret != -ENOENT && ret != -ENOSYS)
813 dev_err(arizona->dev, "Reset GPIO malformed: %d\n",
814 ret);
815
816 pdata->reset = NULL;
817 }
818
819 ret = of_property_read_u32_array(arizona->dev->of_node,
820 "wlf,gpio-defaults",
821 pdata->gpio_defaults,
822 ARRAY_SIZE(pdata->gpio_defaults));
823 if (ret >= 0) {
824 /*
825 * All values are literal except out of range values
826 * which are chip default, translate into platform
827 * data which uses 0 as chip default and out of range
828 * as zero.
829 */
830 for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) {
831 if (pdata->gpio_defaults[i] > 0xffff)
832 pdata->gpio_defaults[i] = 0;
833 else if (pdata->gpio_defaults[i] == 0)
834 pdata->gpio_defaults[i] = 0x10000;
835 }
836 } else {
837 dev_err(arizona->dev, "Failed to parse GPIO defaults: %d\n",
838 ret);
839 }
840
841 return 0;
842 }
843 #else
arizona_of_get_core_pdata(struct arizona * arizona)844 static inline int arizona_of_get_core_pdata(struct arizona *arizona)
845 {
846 return 0;
847 }
848 #endif
849
850 static const struct mfd_cell early_devs[] = {
851 { .name = "arizona-ldo1" },
852 };
853
854 static const char * const wm5102_supplies[] = {
855 "MICVDD",
856 "DBVDD2",
857 "DBVDD3",
858 "CPVDD",
859 "SPKVDDL",
860 "SPKVDDR",
861 };
862
863 static const struct mfd_cell wm5102_devs[] = {
864 { .name = "arizona-micsupp" },
865 { .name = "arizona-gpio" },
866 { .name = "arizona-haptics" },
867 { .name = "arizona-pwm" },
868 {
869 .name = "wm5102-codec",
870 .parent_supplies = wm5102_supplies,
871 .num_parent_supplies = ARRAY_SIZE(wm5102_supplies),
872 },
873 };
874
875 static const struct mfd_cell wm5110_devs[] = {
876 { .name = "arizona-micsupp" },
877 { .name = "arizona-gpio" },
878 { .name = "arizona-haptics" },
879 { .name = "arizona-pwm" },
880 {
881 .name = "wm5110-codec",
882 .parent_supplies = wm5102_supplies,
883 .num_parent_supplies = ARRAY_SIZE(wm5102_supplies),
884 },
885 };
886
887 static const char * const cs47l24_supplies[] = {
888 "MICVDD",
889 "CPVDD",
890 "SPKVDD",
891 };
892
893 static const struct mfd_cell cs47l24_devs[] = {
894 { .name = "arizona-gpio" },
895 { .name = "arizona-haptics" },
896 { .name = "arizona-pwm" },
897 {
898 .name = "cs47l24-codec",
899 .parent_supplies = cs47l24_supplies,
900 .num_parent_supplies = ARRAY_SIZE(cs47l24_supplies),
901 },
902 };
903
904 static const char * const wm8997_supplies[] = {
905 "MICVDD",
906 "DBVDD2",
907 "CPVDD",
908 "SPKVDD",
909 };
910
911 static const struct mfd_cell wm8997_devs[] = {
912 { .name = "arizona-micsupp" },
913 { .name = "arizona-gpio" },
914 { .name = "arizona-haptics" },
915 { .name = "arizona-pwm" },
916 {
917 .name = "wm8997-codec",
918 .parent_supplies = wm8997_supplies,
919 .num_parent_supplies = ARRAY_SIZE(wm8997_supplies),
920 },
921 };
922
923 static const struct mfd_cell wm8998_devs[] = {
924 { .name = "arizona-micsupp" },
925 { .name = "arizona-gpio" },
926 { .name = "arizona-haptics" },
927 { .name = "arizona-pwm" },
928 {
929 .name = "wm8998-codec",
930 .parent_supplies = wm5102_supplies,
931 .num_parent_supplies = ARRAY_SIZE(wm5102_supplies),
932 },
933 };
934
arizona_dev_init(struct arizona * arizona)935 int arizona_dev_init(struct arizona *arizona)
936 {
937 static const char * const mclk_name[] = { "mclk1", "mclk2" };
938 struct device *dev = arizona->dev;
939 const char *type_name = NULL;
940 unsigned int reg, val;
941 int (*apply_patch)(struct arizona *) = NULL;
942 const struct mfd_cell *subdevs = NULL;
943 int n_subdevs = 0, ret, i;
944
945 dev_set_drvdata(arizona->dev, arizona);
946 mutex_init(&arizona->clk_lock);
947
948 if (dev_get_platdata(arizona->dev)) {
949 memcpy(&arizona->pdata, dev_get_platdata(arizona->dev),
950 sizeof(arizona->pdata));
951 } else {
952 ret = arizona_of_get_core_pdata(arizona);
953 if (ret < 0)
954 return ret;
955 }
956
957 BUILD_BUG_ON(ARRAY_SIZE(arizona->mclk) != ARRAY_SIZE(mclk_name));
958 for (i = 0; i < ARRAY_SIZE(arizona->mclk); i++) {
959 arizona->mclk[i] = devm_clk_get(arizona->dev, mclk_name[i]);
960 if (IS_ERR(arizona->mclk[i])) {
961 dev_info(arizona->dev, "Failed to get %s: %ld\n",
962 mclk_name[i], PTR_ERR(arizona->mclk[i]));
963 arizona->mclk[i] = NULL;
964 }
965 }
966
967 regcache_cache_only(arizona->regmap, true);
968
969 switch (arizona->type) {
970 case WM5102:
971 case WM5110:
972 case WM8280:
973 case WM8997:
974 case WM8998:
975 case WM1814:
976 case WM1831:
977 case CS47L24:
978 for (i = 0; i < ARRAY_SIZE(wm5102_core_supplies); i++)
979 arizona->core_supplies[i].supply
980 = wm5102_core_supplies[i];
981 arizona->num_core_supplies = ARRAY_SIZE(wm5102_core_supplies);
982 break;
983 default:
984 dev_err(arizona->dev, "Unknown device type %d\n",
985 arizona->type);
986 return -ENODEV;
987 }
988
989 /* Mark DCVDD as external, LDO1 driver will clear if internal */
990 arizona->external_dcvdd = true;
991
992 switch (arizona->type) {
993 case WM1831:
994 case CS47L24:
995 break; /* No LDO1 regulator */
996 default:
997 ret = mfd_add_devices(arizona->dev, -1, early_devs,
998 ARRAY_SIZE(early_devs), NULL, 0, NULL);
999 if (ret != 0) {
1000 dev_err(dev, "Failed to add early children: %d\n", ret);
1001 return ret;
1002 }
1003 break;
1004 }
1005
1006 ret = devm_regulator_bulk_get(dev, arizona->num_core_supplies,
1007 arizona->core_supplies);
1008 if (ret != 0) {
1009 dev_err(dev, "Failed to request core supplies: %d\n",
1010 ret);
1011 goto err_early;
1012 }
1013
1014 /**
1015 * Don't use devres here because the only device we have to get
1016 * against is the MFD device and DCVDD will likely be supplied by
1017 * one of its children. Meaning that the regulator will be
1018 * destroyed by the time devres calls regulator put.
1019 */
1020 arizona->dcvdd = regulator_get(arizona->dev, "DCVDD");
1021 if (IS_ERR(arizona->dcvdd)) {
1022 ret = PTR_ERR(arizona->dcvdd);
1023 dev_err(dev, "Failed to request DCVDD: %d\n", ret);
1024 goto err_early;
1025 }
1026
1027 if (!arizona->pdata.reset) {
1028 /* Start out with /RESET low to put the chip into reset */
1029 arizona->pdata.reset = devm_gpiod_get(arizona->dev, "reset",
1030 GPIOD_OUT_LOW);
1031 if (IS_ERR(arizona->pdata.reset)) {
1032 ret = PTR_ERR(arizona->pdata.reset);
1033 if (ret == -EPROBE_DEFER)
1034 goto err_dcvdd;
1035
1036 dev_err(arizona->dev,
1037 "Reset GPIO missing/malformed: %d\n", ret);
1038
1039 arizona->pdata.reset = NULL;
1040 }
1041 }
1042
1043 ret = regulator_bulk_enable(arizona->num_core_supplies,
1044 arizona->core_supplies);
1045 if (ret != 0) {
1046 dev_err(dev, "Failed to enable core supplies: %d\n",
1047 ret);
1048 goto err_dcvdd;
1049 }
1050
1051 ret = regulator_enable(arizona->dcvdd);
1052 if (ret != 0) {
1053 dev_err(dev, "Failed to enable DCVDD: %d\n", ret);
1054 goto err_enable;
1055 }
1056
1057 arizona_disable_reset(arizona);
1058
1059 regcache_cache_only(arizona->regmap, false);
1060
1061 /* Verify that this is a chip we know about */
1062 ret = regmap_read(arizona->regmap, ARIZONA_SOFTWARE_RESET, ®);
1063 if (ret != 0) {
1064 dev_err(dev, "Failed to read ID register: %d\n", ret);
1065 goto err_reset;
1066 }
1067
1068 switch (reg) {
1069 case 0x5102:
1070 case 0x5110:
1071 case 0x6349:
1072 case 0x6363:
1073 case 0x8997:
1074 break;
1075 default:
1076 dev_err(arizona->dev, "Unknown device ID: %x\n", reg);
1077 ret = -ENODEV;
1078 goto err_reset;
1079 }
1080
1081 /* If we have a /RESET GPIO we'll already be reset */
1082 if (!arizona->pdata.reset) {
1083 ret = regmap_write(arizona->regmap, ARIZONA_SOFTWARE_RESET, 0);
1084 if (ret != 0) {
1085 dev_err(dev, "Failed to reset device: %d\n", ret);
1086 goto err_reset;
1087 }
1088
1089 usleep_range(1000, 5000);
1090 }
1091
1092 /* Ensure device startup is complete */
1093 switch (arizona->type) {
1094 case WM5102:
1095 ret = regmap_read(arizona->regmap,
1096 ARIZONA_WRITE_SEQUENCER_CTRL_3, &val);
1097 if (ret) {
1098 dev_err(dev,
1099 "Failed to check write sequencer state: %d\n",
1100 ret);
1101 } else if (val & 0x01) {
1102 ret = wm5102_clear_write_sequencer(arizona);
1103 if (ret)
1104 return ret;
1105 }
1106 break;
1107 default:
1108 break;
1109 }
1110
1111 ret = arizona_wait_for_boot(arizona);
1112 if (ret) {
1113 dev_err(arizona->dev, "Device failed initial boot: %d\n", ret);
1114 goto err_reset;
1115 }
1116
1117 /* Read the device ID information & do device specific stuff */
1118 ret = regmap_read(arizona->regmap, ARIZONA_SOFTWARE_RESET, ®);
1119 if (ret != 0) {
1120 dev_err(dev, "Failed to read ID register: %d\n", ret);
1121 goto err_reset;
1122 }
1123
1124 ret = regmap_read(arizona->regmap, ARIZONA_DEVICE_REVISION,
1125 &arizona->rev);
1126 if (ret != 0) {
1127 dev_err(dev, "Failed to read revision register: %d\n", ret);
1128 goto err_reset;
1129 }
1130 arizona->rev &= ARIZONA_DEVICE_REVISION_MASK;
1131
1132 switch (reg) {
1133 case 0x5102:
1134 if (IS_ENABLED(CONFIG_MFD_WM5102)) {
1135 type_name = "WM5102";
1136 if (arizona->type != WM5102) {
1137 dev_warn(arizona->dev,
1138 "WM5102 registered as %d\n",
1139 arizona->type);
1140 arizona->type = WM5102;
1141 }
1142
1143 apply_patch = wm5102_patch;
1144 arizona->rev &= 0x7;
1145 subdevs = wm5102_devs;
1146 n_subdevs = ARRAY_SIZE(wm5102_devs);
1147 }
1148 break;
1149 case 0x5110:
1150 if (IS_ENABLED(CONFIG_MFD_WM5110)) {
1151 switch (arizona->type) {
1152 case WM5110:
1153 type_name = "WM5110";
1154 break;
1155 case WM8280:
1156 type_name = "WM8280";
1157 break;
1158 default:
1159 type_name = "WM5110";
1160 dev_warn(arizona->dev,
1161 "WM5110 registered as %d\n",
1162 arizona->type);
1163 arizona->type = WM5110;
1164 break;
1165 }
1166
1167 apply_patch = wm5110_patch;
1168 subdevs = wm5110_devs;
1169 n_subdevs = ARRAY_SIZE(wm5110_devs);
1170 }
1171 break;
1172 case 0x6363:
1173 if (IS_ENABLED(CONFIG_MFD_CS47L24)) {
1174 switch (arizona->type) {
1175 case CS47L24:
1176 type_name = "CS47L24";
1177 break;
1178
1179 case WM1831:
1180 type_name = "WM1831";
1181 break;
1182
1183 default:
1184 dev_warn(arizona->dev,
1185 "CS47L24 registered as %d\n",
1186 arizona->type);
1187 arizona->type = CS47L24;
1188 break;
1189 }
1190
1191 apply_patch = cs47l24_patch;
1192 subdevs = cs47l24_devs;
1193 n_subdevs = ARRAY_SIZE(cs47l24_devs);
1194 }
1195 break;
1196 case 0x8997:
1197 if (IS_ENABLED(CONFIG_MFD_WM8997)) {
1198 type_name = "WM8997";
1199 if (arizona->type != WM8997) {
1200 dev_warn(arizona->dev,
1201 "WM8997 registered as %d\n",
1202 arizona->type);
1203 arizona->type = WM8997;
1204 }
1205
1206 apply_patch = wm8997_patch;
1207 subdevs = wm8997_devs;
1208 n_subdevs = ARRAY_SIZE(wm8997_devs);
1209 }
1210 break;
1211 case 0x6349:
1212 if (IS_ENABLED(CONFIG_MFD_WM8998)) {
1213 switch (arizona->type) {
1214 case WM8998:
1215 type_name = "WM8998";
1216 break;
1217
1218 case WM1814:
1219 type_name = "WM1814";
1220 break;
1221
1222 default:
1223 type_name = "WM8998";
1224 dev_warn(arizona->dev,
1225 "WM8998 registered as %d\n",
1226 arizona->type);
1227 arizona->type = WM8998;
1228 }
1229
1230 apply_patch = wm8998_patch;
1231 subdevs = wm8998_devs;
1232 n_subdevs = ARRAY_SIZE(wm8998_devs);
1233 }
1234 break;
1235 default:
1236 dev_err(arizona->dev, "Unknown device ID %x\n", reg);
1237 ret = -ENODEV;
1238 goto err_reset;
1239 }
1240
1241 if (!subdevs) {
1242 dev_err(arizona->dev,
1243 "No kernel support for device ID %x\n", reg);
1244 ret = -ENODEV;
1245 goto err_reset;
1246 }
1247
1248 dev_info(dev, "%s revision %c\n", type_name, arizona->rev + 'A');
1249
1250 if (apply_patch) {
1251 ret = apply_patch(arizona);
1252 if (ret != 0) {
1253 dev_err(arizona->dev, "Failed to apply patch: %d\n",
1254 ret);
1255 goto err_reset;
1256 }
1257
1258 switch (arizona->type) {
1259 case WM5102:
1260 ret = wm5102_apply_hardware_patch(arizona);
1261 if (ret) {
1262 dev_err(arizona->dev,
1263 "Failed to apply hardware patch: %d\n",
1264 ret);
1265 goto err_reset;
1266 }
1267 break;
1268 case WM5110:
1269 case WM8280:
1270 ret = wm5110_apply_sleep_patch(arizona);
1271 if (ret) {
1272 dev_err(arizona->dev,
1273 "Failed to apply sleep patch: %d\n",
1274 ret);
1275 goto err_reset;
1276 }
1277 break;
1278 default:
1279 break;
1280 }
1281 }
1282
1283 for (i = 0; i < ARRAY_SIZE(arizona->pdata.gpio_defaults); i++) {
1284 if (!arizona->pdata.gpio_defaults[i])
1285 continue;
1286
1287 regmap_write(arizona->regmap, ARIZONA_GPIO1_CTRL + i,
1288 arizona->pdata.gpio_defaults[i]);
1289 }
1290
1291 /* Chip default */
1292 if (!arizona->pdata.clk32k_src)
1293 arizona->pdata.clk32k_src = ARIZONA_32KZ_MCLK2;
1294
1295 switch (arizona->pdata.clk32k_src) {
1296 case ARIZONA_32KZ_MCLK1:
1297 case ARIZONA_32KZ_MCLK2:
1298 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
1299 ARIZONA_CLK_32K_SRC_MASK,
1300 arizona->pdata.clk32k_src - 1);
1301 arizona_clk32k_enable(arizona);
1302 break;
1303 case ARIZONA_32KZ_NONE:
1304 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
1305 ARIZONA_CLK_32K_SRC_MASK, 2);
1306 break;
1307 default:
1308 dev_err(arizona->dev, "Invalid 32kHz clock source: %d\n",
1309 arizona->pdata.clk32k_src);
1310 ret = -EINVAL;
1311 goto err_reset;
1312 }
1313
1314 for (i = 0; i < ARIZONA_MAX_MICBIAS; i++) {
1315 if (!arizona->pdata.micbias[i].mV &&
1316 !arizona->pdata.micbias[i].bypass)
1317 continue;
1318
1319 /* Apply default for bypass mode */
1320 if (!arizona->pdata.micbias[i].mV)
1321 arizona->pdata.micbias[i].mV = 2800;
1322
1323 val = (arizona->pdata.micbias[i].mV - 1500) / 100;
1324
1325 val <<= ARIZONA_MICB1_LVL_SHIFT;
1326
1327 if (arizona->pdata.micbias[i].ext_cap)
1328 val |= ARIZONA_MICB1_EXT_CAP;
1329
1330 if (arizona->pdata.micbias[i].discharge)
1331 val |= ARIZONA_MICB1_DISCH;
1332
1333 if (arizona->pdata.micbias[i].soft_start)
1334 val |= ARIZONA_MICB1_RATE;
1335
1336 if (arizona->pdata.micbias[i].bypass)
1337 val |= ARIZONA_MICB1_BYPASS;
1338
1339 regmap_update_bits(arizona->regmap,
1340 ARIZONA_MIC_BIAS_CTRL_1 + i,
1341 ARIZONA_MICB1_LVL_MASK |
1342 ARIZONA_MICB1_EXT_CAP |
1343 ARIZONA_MICB1_DISCH |
1344 ARIZONA_MICB1_BYPASS |
1345 ARIZONA_MICB1_RATE, val);
1346 }
1347
1348 pm_runtime_set_active(arizona->dev);
1349 pm_runtime_enable(arizona->dev);
1350
1351 /* Set up for interrupts */
1352 ret = arizona_irq_init(arizona);
1353 if (ret != 0)
1354 goto err_pm;
1355
1356 pm_runtime_set_autosuspend_delay(arizona->dev, 100);
1357 pm_runtime_use_autosuspend(arizona->dev);
1358
1359 arizona_request_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, "CLKGEN error",
1360 arizona_clkgen_err, arizona);
1361 arizona_request_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, "Overclocked",
1362 arizona_overclocked, arizona);
1363 arizona_request_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, "Underclocked",
1364 arizona_underclocked, arizona);
1365
1366 ret = mfd_add_devices(arizona->dev, PLATFORM_DEVID_NONE,
1367 subdevs, n_subdevs, NULL, 0, NULL);
1368
1369 if (ret) {
1370 dev_err(arizona->dev, "Failed to add subdevices: %d\n", ret);
1371 goto err_irq;
1372 }
1373
1374 return 0;
1375
1376 err_irq:
1377 arizona_irq_exit(arizona);
1378 err_pm:
1379 pm_runtime_disable(arizona->dev);
1380
1381 switch (arizona->pdata.clk32k_src) {
1382 case ARIZONA_32KZ_MCLK1:
1383 case ARIZONA_32KZ_MCLK2:
1384 arizona_clk32k_disable(arizona);
1385 break;
1386 default:
1387 break;
1388 }
1389 err_reset:
1390 arizona_enable_reset(arizona);
1391 regulator_disable(arizona->dcvdd);
1392 err_enable:
1393 regulator_bulk_disable(arizona->num_core_supplies,
1394 arizona->core_supplies);
1395 err_dcvdd:
1396 regulator_put(arizona->dcvdd);
1397 err_early:
1398 mfd_remove_devices(dev);
1399 return ret;
1400 }
1401 EXPORT_SYMBOL_GPL(arizona_dev_init);
1402
arizona_dev_exit(struct arizona * arizona)1403 int arizona_dev_exit(struct arizona *arizona)
1404 {
1405 disable_irq(arizona->irq);
1406 pm_runtime_disable(arizona->dev);
1407
1408 regulator_disable(arizona->dcvdd);
1409 regulator_put(arizona->dcvdd);
1410
1411 switch (arizona->pdata.clk32k_src) {
1412 case ARIZONA_32KZ_MCLK1:
1413 case ARIZONA_32KZ_MCLK2:
1414 arizona_clk32k_disable(arizona);
1415 break;
1416 default:
1417 break;
1418 }
1419
1420 mfd_remove_devices(arizona->dev);
1421 arizona_free_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, arizona);
1422 arizona_free_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, arizona);
1423 arizona_free_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, arizona);
1424 arizona_irq_exit(arizona);
1425 arizona_enable_reset(arizona);
1426
1427 regulator_bulk_disable(arizona->num_core_supplies,
1428 arizona->core_supplies);
1429 return 0;
1430 }
1431 EXPORT_SYMBOL_GPL(arizona_dev_exit);
1432
1433 MODULE_LICENSE("GPL v2");
1434