1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24#include <linux/module.h>
25#include <linux/moduleparam.h>
26#include <linux/kernel.h>
27#include <linux/init.h>
28#include <linux/firmware.h>
29#include <linux/clk.h>
30#include <linux/delay.h>
31#include <linux/pm.h>
32#include <linux/i2c.h>
33#include <linux/regmap.h>
34#include <linux/debugfs.h>
35#include <linux/regulator/consumer.h>
36#include <linux/slab.h>
37#include <sound/core.h>
38#include <sound/pcm.h>
39#include <sound/pcm_params.h>
40#include <sound/soc.h>
41#include <sound/initval.h>
42#include <sound/tlv.h>
43
44#include <sound/wm2000.h>
45
46#include "wm2000.h"
47
48#define WM2000_NUM_SUPPLIES 3
49
50static const char *wm2000_supplies[WM2000_NUM_SUPPLIES] = {
51 "SPKVDD",
52 "DBVDD",
53 "DCVDD",
54};
55
56enum wm2000_anc_mode {
57 ANC_ACTIVE = 0,
58 ANC_BYPASS = 1,
59 ANC_STANDBY = 2,
60 ANC_OFF = 3,
61};
62
63struct wm2000_priv {
64 struct i2c_client *i2c;
65 struct regmap *regmap;
66 struct clk *mclk;
67
68 struct regulator_bulk_data supplies[WM2000_NUM_SUPPLIES];
69
70 enum wm2000_anc_mode anc_mode;
71
72 unsigned int anc_active:1;
73 unsigned int anc_eng_ena:1;
74 unsigned int spk_ena:1;
75
76 unsigned int speech_clarity:1;
77
78 int anc_download_size;
79 char *anc_download;
80
81 struct mutex lock;
82};
83
84static int wm2000_write(struct i2c_client *i2c, unsigned int reg,
85 unsigned int value)
86{
87 struct wm2000_priv *wm2000 = i2c_get_clientdata(i2c);
88 return regmap_write(wm2000->regmap, reg, value);
89}
90
91static unsigned int wm2000_read(struct i2c_client *i2c, unsigned int r)
92{
93 struct wm2000_priv *wm2000 = i2c_get_clientdata(i2c);
94 unsigned int val;
95 int ret;
96
97 ret = regmap_read(wm2000->regmap, r, &val);
98 if (ret < 0)
99 return -1;
100
101 return val;
102}
103
104static void wm2000_reset(struct wm2000_priv *wm2000)
105{
106 struct i2c_client *i2c = wm2000->i2c;
107
108 wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_ENG_CLR);
109 wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_CLR);
110 wm2000_write(i2c, WM2000_REG_ID1, 0);
111
112 wm2000->anc_mode = ANC_OFF;
113}
114
115static int wm2000_poll_bit(struct i2c_client *i2c,
116 unsigned int reg, u8 mask)
117{
118 int timeout = 4000;
119 int val;
120
121 val = wm2000_read(i2c, reg);
122
123 while (!(val & mask) && --timeout) {
124 msleep(1);
125 val = wm2000_read(i2c, reg);
126 }
127
128 if (timeout == 0)
129 return 0;
130 else
131 return 1;
132}
133
134static int wm2000_power_up(struct i2c_client *i2c, int analogue)
135{
136 struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
137 unsigned long rate;
138 int ret;
139
140 if (WARN_ON(wm2000->anc_mode != ANC_OFF))
141 return -EINVAL;
142
143 dev_dbg(&i2c->dev, "Beginning power up\n");
144
145 ret = regulator_bulk_enable(WM2000_NUM_SUPPLIES, wm2000->supplies);
146 if (ret != 0) {
147 dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret);
148 return ret;
149 }
150
151 rate = clk_get_rate(wm2000->mclk);
152 if (rate <= 13500000) {
153 dev_dbg(&i2c->dev, "Disabling MCLK divider\n");
154 wm2000_write(i2c, WM2000_REG_SYS_CTL2,
155 WM2000_MCLK_DIV2_ENA_CLR);
156 } else {
157 dev_dbg(&i2c->dev, "Enabling MCLK divider\n");
158 wm2000_write(i2c, WM2000_REG_SYS_CTL2,
159 WM2000_MCLK_DIV2_ENA_SET);
160 }
161
162 wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_ENG_CLR);
163 wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_ENG_SET);
164
165
166 if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT,
167 WM2000_ANC_ENG_IDLE)) {
168 dev_err(&i2c->dev, "ANC engine failed to reset\n");
169 regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
170 return -ETIMEDOUT;
171 }
172
173 if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
174 WM2000_STATUS_BOOT_COMPLETE)) {
175 dev_err(&i2c->dev, "ANC engine failed to initialise\n");
176 regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
177 return -ETIMEDOUT;
178 }
179
180 wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_SET);
181
182
183
184 dev_dbg(&i2c->dev, "Downloading %d bytes\n",
185 wm2000->anc_download_size - 2);
186
187 ret = i2c_master_send(i2c, wm2000->anc_download,
188 wm2000->anc_download_size);
189 if (ret < 0) {
190 dev_err(&i2c->dev, "i2c_transfer() failed: %d\n", ret);
191 regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
192 return ret;
193 }
194 if (ret != wm2000->anc_download_size) {
195 dev_err(&i2c->dev, "i2c_transfer() failed, %d != %d\n",
196 ret, wm2000->anc_download_size);
197 regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
198 return -EIO;
199 }
200
201 dev_dbg(&i2c->dev, "Download complete\n");
202
203 if (analogue) {
204 wm2000_write(i2c, WM2000_REG_ANA_VMID_PU_TIME, 248 / 4);
205
206 wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
207 WM2000_MODE_ANA_SEQ_INCLUDE |
208 WM2000_MODE_MOUSE_ENABLE |
209 WM2000_MODE_THERMAL_ENABLE);
210 } else {
211 wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
212 WM2000_MODE_MOUSE_ENABLE |
213 WM2000_MODE_THERMAL_ENABLE);
214 }
215
216 ret = wm2000_read(i2c, WM2000_REG_SPEECH_CLARITY);
217 if (wm2000->speech_clarity)
218 ret |= WM2000_SPEECH_CLARITY;
219 else
220 ret &= ~WM2000_SPEECH_CLARITY;
221 wm2000_write(i2c, WM2000_REG_SPEECH_CLARITY, ret);
222
223 wm2000_write(i2c, WM2000_REG_SYS_START0, 0x33);
224 wm2000_write(i2c, WM2000_REG_SYS_START1, 0x02);
225
226 wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_INT_N_CLR);
227
228 if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
229 WM2000_STATUS_MOUSE_ACTIVE)) {
230 dev_err(&i2c->dev, "Timed out waiting for device\n");
231 regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
232 return -ETIMEDOUT;
233 }
234
235 dev_dbg(&i2c->dev, "ANC active\n");
236 if (analogue)
237 dev_dbg(&i2c->dev, "Analogue active\n");
238 wm2000->anc_mode = ANC_ACTIVE;
239
240 return 0;
241}
242
243static int wm2000_power_down(struct i2c_client *i2c, int analogue)
244{
245 struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
246
247 if (analogue) {
248 wm2000_write(i2c, WM2000_REG_ANA_VMID_PD_TIME, 248 / 4);
249 wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
250 WM2000_MODE_ANA_SEQ_INCLUDE |
251 WM2000_MODE_POWER_DOWN);
252 } else {
253 wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
254 WM2000_MODE_POWER_DOWN);
255 }
256
257 if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
258 WM2000_STATUS_POWER_DOWN_COMPLETE)) {
259 dev_err(&i2c->dev, "Timeout waiting for ANC power down\n");
260 return -ETIMEDOUT;
261 }
262
263 if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT,
264 WM2000_ANC_ENG_IDLE)) {
265 dev_err(&i2c->dev, "Timeout waiting for ANC engine idle\n");
266 return -ETIMEDOUT;
267 }
268
269 regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
270
271 dev_dbg(&i2c->dev, "powered off\n");
272 wm2000->anc_mode = ANC_OFF;
273
274 return 0;
275}
276
277static int wm2000_enter_bypass(struct i2c_client *i2c, int analogue)
278{
279 struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
280
281 if (WARN_ON(wm2000->anc_mode != ANC_ACTIVE))
282 return -EINVAL;
283
284 if (analogue) {
285 wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
286 WM2000_MODE_ANA_SEQ_INCLUDE |
287 WM2000_MODE_THERMAL_ENABLE |
288 WM2000_MODE_BYPASS_ENTRY);
289 } else {
290 wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
291 WM2000_MODE_THERMAL_ENABLE |
292 WM2000_MODE_BYPASS_ENTRY);
293 }
294
295 if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
296 WM2000_STATUS_ANC_DISABLED)) {
297 dev_err(&i2c->dev, "Timeout waiting for ANC disable\n");
298 return -ETIMEDOUT;
299 }
300
301 if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT,
302 WM2000_ANC_ENG_IDLE)) {
303 dev_err(&i2c->dev, "Timeout waiting for ANC engine idle\n");
304 return -ETIMEDOUT;
305 }
306
307 wm2000_write(i2c, WM2000_REG_SYS_CTL1, WM2000_SYS_STBY);
308 wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_CLR);
309
310 wm2000->anc_mode = ANC_BYPASS;
311 dev_dbg(&i2c->dev, "bypass enabled\n");
312
313 return 0;
314}
315
316static int wm2000_exit_bypass(struct i2c_client *i2c, int analogue)
317{
318 struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
319
320 if (WARN_ON(wm2000->anc_mode != ANC_BYPASS))
321 return -EINVAL;
322
323 wm2000_write(i2c, WM2000_REG_SYS_CTL1, 0);
324
325 if (analogue) {
326 wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
327 WM2000_MODE_ANA_SEQ_INCLUDE |
328 WM2000_MODE_MOUSE_ENABLE |
329 WM2000_MODE_THERMAL_ENABLE);
330 } else {
331 wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
332 WM2000_MODE_MOUSE_ENABLE |
333 WM2000_MODE_THERMAL_ENABLE);
334 }
335
336 wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_SET);
337 wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_INT_N_CLR);
338
339 if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
340 WM2000_STATUS_MOUSE_ACTIVE)) {
341 dev_err(&i2c->dev, "Timed out waiting for MOUSE\n");
342 return -ETIMEDOUT;
343 }
344
345 wm2000->anc_mode = ANC_ACTIVE;
346 dev_dbg(&i2c->dev, "MOUSE active\n");
347
348 return 0;
349}
350
351static int wm2000_enter_standby(struct i2c_client *i2c, int analogue)
352{
353 struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
354
355 if (WARN_ON(wm2000->anc_mode != ANC_ACTIVE))
356 return -EINVAL;
357
358 if (analogue) {
359 wm2000_write(i2c, WM2000_REG_ANA_VMID_PD_TIME, 248 / 4);
360
361 wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
362 WM2000_MODE_ANA_SEQ_INCLUDE |
363 WM2000_MODE_THERMAL_ENABLE |
364 WM2000_MODE_STANDBY_ENTRY);
365 } else {
366 wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
367 WM2000_MODE_THERMAL_ENABLE |
368 WM2000_MODE_STANDBY_ENTRY);
369 }
370
371 if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
372 WM2000_STATUS_ANC_DISABLED)) {
373 dev_err(&i2c->dev,
374 "Timed out waiting for ANC disable after 1ms\n");
375 return -ETIMEDOUT;
376 }
377
378 if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT, WM2000_ANC_ENG_IDLE)) {
379 dev_err(&i2c->dev,
380 "Timed out waiting for standby\n");
381 return -ETIMEDOUT;
382 }
383
384 wm2000_write(i2c, WM2000_REG_SYS_CTL1, WM2000_SYS_STBY);
385 wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_CLR);
386
387 wm2000->anc_mode = ANC_STANDBY;
388 dev_dbg(&i2c->dev, "standby\n");
389 if (analogue)
390 dev_dbg(&i2c->dev, "Analogue disabled\n");
391
392 return 0;
393}
394
395static int wm2000_exit_standby(struct i2c_client *i2c, int analogue)
396{
397 struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
398
399 if (WARN_ON(wm2000->anc_mode != ANC_STANDBY))
400 return -EINVAL;
401
402 wm2000_write(i2c, WM2000_REG_SYS_CTL1, 0);
403
404 if (analogue) {
405 wm2000_write(i2c, WM2000_REG_ANA_VMID_PU_TIME, 248 / 4);
406
407 wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
408 WM2000_MODE_ANA_SEQ_INCLUDE |
409 WM2000_MODE_THERMAL_ENABLE |
410 WM2000_MODE_MOUSE_ENABLE);
411 } else {
412 wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
413 WM2000_MODE_THERMAL_ENABLE |
414 WM2000_MODE_MOUSE_ENABLE);
415 }
416
417 wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_SET);
418 wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_INT_N_CLR);
419
420 if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
421 WM2000_STATUS_MOUSE_ACTIVE)) {
422 dev_err(&i2c->dev, "Timed out waiting for MOUSE\n");
423 return -ETIMEDOUT;
424 }
425
426 wm2000->anc_mode = ANC_ACTIVE;
427 dev_dbg(&i2c->dev, "MOUSE active\n");
428 if (analogue)
429 dev_dbg(&i2c->dev, "Analogue enabled\n");
430
431 return 0;
432}
433
434typedef int (*wm2000_mode_fn)(struct i2c_client *i2c, int analogue);
435
436static struct {
437 enum wm2000_anc_mode source;
438 enum wm2000_anc_mode dest;
439 int analogue;
440 wm2000_mode_fn step[2];
441} anc_transitions[] = {
442 {
443 .source = ANC_OFF,
444 .dest = ANC_ACTIVE,
445 .analogue = 1,
446 .step = {
447 wm2000_power_up,
448 },
449 },
450 {
451 .source = ANC_OFF,
452 .dest = ANC_STANDBY,
453 .step = {
454 wm2000_power_up,
455 wm2000_enter_standby,
456 },
457 },
458 {
459 .source = ANC_OFF,
460 .dest = ANC_BYPASS,
461 .analogue = 1,
462 .step = {
463 wm2000_power_up,
464 wm2000_enter_bypass,
465 },
466 },
467 {
468 .source = ANC_ACTIVE,
469 .dest = ANC_BYPASS,
470 .analogue = 1,
471 .step = {
472 wm2000_enter_bypass,
473 },
474 },
475 {
476 .source = ANC_ACTIVE,
477 .dest = ANC_STANDBY,
478 .analogue = 1,
479 .step = {
480 wm2000_enter_standby,
481 },
482 },
483 {
484 .source = ANC_ACTIVE,
485 .dest = ANC_OFF,
486 .analogue = 1,
487 .step = {
488 wm2000_power_down,
489 },
490 },
491 {
492 .source = ANC_BYPASS,
493 .dest = ANC_ACTIVE,
494 .analogue = 1,
495 .step = {
496 wm2000_exit_bypass,
497 },
498 },
499 {
500 .source = ANC_BYPASS,
501 .dest = ANC_STANDBY,
502 .analogue = 1,
503 .step = {
504 wm2000_exit_bypass,
505 wm2000_enter_standby,
506 },
507 },
508 {
509 .source = ANC_BYPASS,
510 .dest = ANC_OFF,
511 .step = {
512 wm2000_exit_bypass,
513 wm2000_power_down,
514 },
515 },
516 {
517 .source = ANC_STANDBY,
518 .dest = ANC_ACTIVE,
519 .analogue = 1,
520 .step = {
521 wm2000_exit_standby,
522 },
523 },
524 {
525 .source = ANC_STANDBY,
526 .dest = ANC_BYPASS,
527 .analogue = 1,
528 .step = {
529 wm2000_exit_standby,
530 wm2000_enter_bypass,
531 },
532 },
533 {
534 .source = ANC_STANDBY,
535 .dest = ANC_OFF,
536 .step = {
537 wm2000_exit_standby,
538 wm2000_power_down,
539 },
540 },
541};
542
543static int wm2000_anc_transition(struct wm2000_priv *wm2000,
544 enum wm2000_anc_mode mode)
545{
546 struct i2c_client *i2c = wm2000->i2c;
547 int i, j;
548 int ret;
549
550 if (wm2000->anc_mode == mode)
551 return 0;
552
553 for (i = 0; i < ARRAY_SIZE(anc_transitions); i++)
554 if (anc_transitions[i].source == wm2000->anc_mode &&
555 anc_transitions[i].dest == mode)
556 break;
557 if (i == ARRAY_SIZE(anc_transitions)) {
558 dev_err(&i2c->dev, "No transition for %d->%d\n",
559 wm2000->anc_mode, mode);
560 return -EINVAL;
561 }
562
563
564 if (anc_transitions[i].source == ANC_OFF) {
565 ret = clk_prepare_enable(wm2000->mclk);
566 if (ret != 0) {
567 dev_err(&i2c->dev, "Failed to enable MCLK: %d\n", ret);
568 return ret;
569 }
570 }
571
572 for (j = 0; j < ARRAY_SIZE(anc_transitions[j].step); j++) {
573 if (!anc_transitions[i].step[j])
574 break;
575 ret = anc_transitions[i].step[j](i2c,
576 anc_transitions[i].analogue);
577 if (ret != 0)
578 return ret;
579 }
580
581 if (anc_transitions[i].dest == ANC_OFF)
582 clk_disable_unprepare(wm2000->mclk);
583
584 return ret;
585}
586
587static int wm2000_anc_set_mode(struct wm2000_priv *wm2000)
588{
589 struct i2c_client *i2c = wm2000->i2c;
590 enum wm2000_anc_mode mode;
591
592 if (wm2000->anc_eng_ena && wm2000->spk_ena)
593 if (wm2000->anc_active)
594 mode = ANC_ACTIVE;
595 else
596 mode = ANC_BYPASS;
597 else
598 mode = ANC_STANDBY;
599
600 dev_dbg(&i2c->dev, "Set mode %d (enabled %d, mute %d, active %d)\n",
601 mode, wm2000->anc_eng_ena, !wm2000->spk_ena,
602 wm2000->anc_active);
603
604 return wm2000_anc_transition(wm2000, mode);
605}
606
607static int wm2000_anc_mode_get(struct snd_kcontrol *kcontrol,
608 struct snd_ctl_elem_value *ucontrol)
609{
610 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
611 struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
612
613 ucontrol->value.integer.value[0] = wm2000->anc_active;
614
615 return 0;
616}
617
618static int wm2000_anc_mode_put(struct snd_kcontrol *kcontrol,
619 struct snd_ctl_elem_value *ucontrol)
620{
621 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
622 struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
623 unsigned int anc_active = ucontrol->value.integer.value[0];
624 int ret;
625
626 if (anc_active > 1)
627 return -EINVAL;
628
629 mutex_lock(&wm2000->lock);
630
631 wm2000->anc_active = anc_active;
632
633 ret = wm2000_anc_set_mode(wm2000);
634
635 mutex_unlock(&wm2000->lock);
636
637 return ret;
638}
639
640static int wm2000_speaker_get(struct snd_kcontrol *kcontrol,
641 struct snd_ctl_elem_value *ucontrol)
642{
643 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
644 struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
645
646 ucontrol->value.integer.value[0] = wm2000->spk_ena;
647
648 return 0;
649}
650
651static int wm2000_speaker_put(struct snd_kcontrol *kcontrol,
652 struct snd_ctl_elem_value *ucontrol)
653{
654 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
655 struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
656 unsigned int val = ucontrol->value.integer.value[0];
657 int ret;
658
659 if (val > 1)
660 return -EINVAL;
661
662 mutex_lock(&wm2000->lock);
663
664 wm2000->spk_ena = val;
665
666 ret = wm2000_anc_set_mode(wm2000);
667
668 mutex_unlock(&wm2000->lock);
669
670 return ret;
671}
672
673static const struct snd_kcontrol_new wm2000_controls[] = {
674 SOC_SINGLE("ANC Volume", WM2000_REG_ANC_GAIN_CTRL, 0, 255, 0),
675 SOC_SINGLE_BOOL_EXT("WM2000 ANC Switch", 0,
676 wm2000_anc_mode_get,
677 wm2000_anc_mode_put),
678 SOC_SINGLE_BOOL_EXT("WM2000 Switch", 0,
679 wm2000_speaker_get,
680 wm2000_speaker_put),
681};
682
683static int wm2000_anc_power_event(struct snd_soc_dapm_widget *w,
684 struct snd_kcontrol *kcontrol, int event)
685{
686 struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
687 struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
688 int ret;
689
690 mutex_lock(&wm2000->lock);
691
692 if (SND_SOC_DAPM_EVENT_ON(event))
693 wm2000->anc_eng_ena = 1;
694
695 if (SND_SOC_DAPM_EVENT_OFF(event))
696 wm2000->anc_eng_ena = 0;
697
698 ret = wm2000_anc_set_mode(wm2000);
699
700 mutex_unlock(&wm2000->lock);
701
702 return ret;
703}
704
705static const struct snd_soc_dapm_widget wm2000_dapm_widgets[] = {
706
707SND_SOC_DAPM_OUTPUT("SPKN"),
708SND_SOC_DAPM_OUTPUT("SPKP"),
709
710SND_SOC_DAPM_INPUT("LINN"),
711SND_SOC_DAPM_INPUT("LINP"),
712
713SND_SOC_DAPM_PGA_E("ANC Engine", SND_SOC_NOPM, 0, 0, NULL, 0,
714 wm2000_anc_power_event,
715 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
716};
717
718
719static const struct snd_soc_dapm_route wm2000_audio_map[] = {
720 { "SPKN", NULL, "ANC Engine" },
721 { "SPKP", NULL, "ANC Engine" },
722 { "ANC Engine", NULL, "LINN" },
723 { "ANC Engine", NULL, "LINP" },
724};
725
726#ifdef CONFIG_PM
727static int wm2000_suspend(struct snd_soc_codec *codec)
728{
729 struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
730
731 return wm2000_anc_transition(wm2000, ANC_OFF);
732}
733
734static int wm2000_resume(struct snd_soc_codec *codec)
735{
736 struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
737
738 return wm2000_anc_set_mode(wm2000);
739}
740#else
741#define wm2000_suspend NULL
742#define wm2000_resume NULL
743#endif
744
745static bool wm2000_readable_reg(struct device *dev, unsigned int reg)
746{
747 switch (reg) {
748 case WM2000_REG_SYS_START:
749 case WM2000_REG_ANC_GAIN_CTRL:
750 case WM2000_REG_MSE_TH1:
751 case WM2000_REG_MSE_TH2:
752 case WM2000_REG_SPEECH_CLARITY:
753 case WM2000_REG_SYS_WATCHDOG:
754 case WM2000_REG_ANA_VMID_PD_TIME:
755 case WM2000_REG_ANA_VMID_PU_TIME:
756 case WM2000_REG_CAT_FLTR_INDX:
757 case WM2000_REG_CAT_GAIN_0:
758 case WM2000_REG_SYS_STATUS:
759 case WM2000_REG_SYS_MODE_CNTRL:
760 case WM2000_REG_SYS_START0:
761 case WM2000_REG_SYS_START1:
762 case WM2000_REG_ID1:
763 case WM2000_REG_ID2:
764 case WM2000_REG_REVISON:
765 case WM2000_REG_SYS_CTL1:
766 case WM2000_REG_SYS_CTL2:
767 case WM2000_REG_ANC_STAT:
768 case WM2000_REG_IF_CTL:
769 case WM2000_REG_ANA_MIC_CTL:
770 case WM2000_REG_SPK_CTL:
771 return true;
772 default:
773 return false;
774 }
775}
776
777static const struct regmap_config wm2000_regmap = {
778 .reg_bits = 16,
779 .val_bits = 8,
780
781 .max_register = WM2000_REG_SPK_CTL,
782 .readable_reg = wm2000_readable_reg,
783};
784
785static int wm2000_probe(struct snd_soc_codec *codec)
786{
787 struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
788
789
790 wm2000_anc_set_mode(wm2000);
791
792 return 0;
793}
794
795static int wm2000_remove(struct snd_soc_codec *codec)
796{
797 struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
798
799 return wm2000_anc_transition(wm2000, ANC_OFF);
800}
801
802static struct snd_soc_codec_driver soc_codec_dev_wm2000 = {
803 .probe = wm2000_probe,
804 .remove = wm2000_remove,
805 .suspend = wm2000_suspend,
806 .resume = wm2000_resume,
807
808 .dapm_widgets = wm2000_dapm_widgets,
809 .num_dapm_widgets = ARRAY_SIZE(wm2000_dapm_widgets),
810 .dapm_routes = wm2000_audio_map,
811 .num_dapm_routes = ARRAY_SIZE(wm2000_audio_map),
812 .controls = wm2000_controls,
813 .num_controls = ARRAY_SIZE(wm2000_controls),
814};
815
816static int wm2000_i2c_probe(struct i2c_client *i2c,
817 const struct i2c_device_id *i2c_id)
818{
819 struct wm2000_priv *wm2000;
820 struct wm2000_platform_data *pdata;
821 const char *filename;
822 const struct firmware *fw = NULL;
823 int ret, i;
824 int reg;
825 u16 id;
826
827 wm2000 = devm_kzalloc(&i2c->dev, sizeof(struct wm2000_priv),
828 GFP_KERNEL);
829 if (!wm2000)
830 return -ENOMEM;
831
832 mutex_init(&wm2000->lock);
833
834 dev_set_drvdata(&i2c->dev, wm2000);
835
836 wm2000->regmap = devm_regmap_init_i2c(i2c, &wm2000_regmap);
837 if (IS_ERR(wm2000->regmap)) {
838 ret = PTR_ERR(wm2000->regmap);
839 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
840 ret);
841 goto out;
842 }
843
844 for (i = 0; i < WM2000_NUM_SUPPLIES; i++)
845 wm2000->supplies[i].supply = wm2000_supplies[i];
846
847 ret = devm_regulator_bulk_get(&i2c->dev, WM2000_NUM_SUPPLIES,
848 wm2000->supplies);
849 if (ret != 0) {
850 dev_err(&i2c->dev, "Failed to get supplies: %d\n", ret);
851 return ret;
852 }
853
854 ret = regulator_bulk_enable(WM2000_NUM_SUPPLIES, wm2000->supplies);
855 if (ret != 0) {
856 dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret);
857 return ret;
858 }
859
860
861 reg = wm2000_read(i2c, WM2000_REG_ID1);
862 id = reg << 8;
863 reg = wm2000_read(i2c, WM2000_REG_ID2);
864 id |= reg & 0xff;
865
866 if (id != 0x2000) {
867 dev_err(&i2c->dev, "Device is not a WM2000 - ID %x\n", id);
868 ret = -ENODEV;
869 goto err_supplies;
870 }
871
872 reg = wm2000_read(i2c, WM2000_REG_REVISON);
873 dev_info(&i2c->dev, "revision %c\n", reg + 'A');
874
875 wm2000->mclk = devm_clk_get(&i2c->dev, "MCLK");
876 if (IS_ERR(wm2000->mclk)) {
877 ret = PTR_ERR(wm2000->mclk);
878 dev_err(&i2c->dev, "Failed to get MCLK: %d\n", ret);
879 goto err_supplies;
880 }
881
882 filename = "wm2000_anc.bin";
883 pdata = dev_get_platdata(&i2c->dev);
884 if (pdata) {
885 wm2000->speech_clarity = !pdata->speech_enh_disable;
886
887 if (pdata->download_file)
888 filename = pdata->download_file;
889 }
890
891 ret = request_firmware(&fw, filename, &i2c->dev);
892 if (ret != 0) {
893 dev_err(&i2c->dev, "Failed to acquire ANC data: %d\n", ret);
894 goto err_supplies;
895 }
896
897
898 wm2000->anc_download_size = fw->size + 2;
899 wm2000->anc_download = devm_kzalloc(&i2c->dev,
900 wm2000->anc_download_size,
901 GFP_KERNEL);
902 if (wm2000->anc_download == NULL) {
903 dev_err(&i2c->dev, "Out of memory\n");
904 ret = -ENOMEM;
905 goto err_supplies;
906 }
907
908 wm2000->anc_download[0] = 0x80;
909 wm2000->anc_download[1] = 0x00;
910 memcpy(wm2000->anc_download + 2, fw->data, fw->size);
911
912 wm2000->anc_eng_ena = 1;
913 wm2000->anc_active = 1;
914 wm2000->spk_ena = 1;
915 wm2000->i2c = i2c;
916
917 wm2000_reset(wm2000);
918
919 ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_wm2000, NULL, 0);
920
921err_supplies:
922 regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
923
924out:
925 release_firmware(fw);
926 return ret;
927}
928
929static int wm2000_i2c_remove(struct i2c_client *i2c)
930{
931 snd_soc_unregister_codec(&i2c->dev);
932
933 return 0;
934}
935
936static const struct i2c_device_id wm2000_i2c_id[] = {
937 { "wm2000", 0 },
938 { }
939};
940MODULE_DEVICE_TABLE(i2c, wm2000_i2c_id);
941
942static struct i2c_driver wm2000_i2c_driver = {
943 .driver = {
944 .name = "wm2000",
945 },
946 .probe = wm2000_i2c_probe,
947 .remove = wm2000_i2c_remove,
948 .id_table = wm2000_i2c_id,
949};
950
951module_i2c_driver(wm2000_i2c_driver);
952
953MODULE_DESCRIPTION("ASoC WM2000 driver");
954MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfonmicro.com>");
955MODULE_LICENSE("GPL");
956
