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22#include <linux/init.h>
23#include <linux/module.h>
24#include <linux/clk.h>
25#include <linux/kernel.h>
26#include <linux/pm_runtime.h>
27#include <linux/regmap.h>
28#include <linux/i2c.h>
29#include <linux/regulator/consumer.h>
30#include <sound/soc.h>
31#include <sound/soc-dapm.h>
32#include <sound/pcm_params.h>
33#include <sound/tlv.h>
34
35#include "max9860.h"
36
37struct max9860_priv {
38 struct regmap *regmap;
39 struct regulator *dvddio;
40 struct notifier_block dvddio_nb;
41 u8 psclk;
42 unsigned long pclk_rate;
43 int fmt;
44};
45
46static int max9860_dvddio_event(struct notifier_block *nb,
47 unsigned long event, void *data)
48{
49 struct max9860_priv *max9860 = container_of(nb, struct max9860_priv,
50 dvddio_nb);
51 if (event & REGULATOR_EVENT_DISABLE) {
52 regcache_mark_dirty(max9860->regmap);
53 regcache_cache_only(max9860->regmap, true);
54 }
55
56 return 0;
57}
58
59static const struct reg_default max9860_reg_defaults[] = {
60 { MAX9860_PWRMAN, 0x00 },
61 { MAX9860_INTEN, 0x00 },
62 { MAX9860_SYSCLK, 0x00 },
63 { MAX9860_AUDIOCLKHIGH, 0x00 },
64 { MAX9860_AUDIOCLKLOW, 0x00 },
65 { MAX9860_IFC1A, 0x00 },
66 { MAX9860_IFC1B, 0x00 },
67 { MAX9860_VOICEFLTR, 0x00 },
68 { MAX9860_DACATTN, 0x00 },
69 { MAX9860_ADCLEVEL, 0x00 },
70 { MAX9860_DACGAIN, 0x00 },
71 { MAX9860_MICGAIN, 0x00 },
72 { MAX9860_MICADC, 0x00 },
73 { MAX9860_NOISEGATE, 0x00 },
74};
75
76static bool max9860_readable(struct device *dev, unsigned int reg)
77{
78 switch (reg) {
79 case MAX9860_INTRSTATUS ... MAX9860_MICGAIN:
80 case MAX9860_MICADC ... MAX9860_PWRMAN:
81 case MAX9860_REVISION:
82 return true;
83 }
84
85 return false;
86}
87
88static bool max9860_writeable(struct device *dev, unsigned int reg)
89{
90 switch (reg) {
91 case MAX9860_INTEN ... MAX9860_MICGAIN:
92 case MAX9860_MICADC ... MAX9860_PWRMAN:
93 return true;
94 }
95
96 return false;
97}
98
99static bool max9860_volatile(struct device *dev, unsigned int reg)
100{
101 switch (reg) {
102 case MAX9860_INTRSTATUS:
103 case MAX9860_MICREADBACK:
104 return true;
105 }
106
107 return false;
108}
109
110static bool max9860_precious(struct device *dev, unsigned int reg)
111{
112 switch (reg) {
113 case MAX9860_INTRSTATUS:
114 return true;
115 }
116
117 return false;
118}
119
120static const struct regmap_config max9860_regmap = {
121 .reg_bits = 8,
122 .val_bits = 8,
123
124 .readable_reg = max9860_readable,
125 .writeable_reg = max9860_writeable,
126 .volatile_reg = max9860_volatile,
127 .precious_reg = max9860_precious,
128
129 .max_register = MAX9860_MAX_REGISTER,
130 .reg_defaults = max9860_reg_defaults,
131 .num_reg_defaults = ARRAY_SIZE(max9860_reg_defaults),
132 .cache_type = REGCACHE_RBTREE,
133};
134
135static const DECLARE_TLV_DB_SCALE(dva_tlv, -9100, 100, 1);
136static const DECLARE_TLV_DB_SCALE(dvg_tlv, 0, 600, 0);
137static const DECLARE_TLV_DB_SCALE(adc_tlv, -1200, 100, 0);
138static const DECLARE_TLV_DB_RANGE(pam_tlv,
139 0, MAX9860_PAM_MAX - 1, TLV_DB_SCALE_ITEM(-2000, 2000, 1),
140 MAX9860_PAM_MAX, MAX9860_PAM_MAX, TLV_DB_SCALE_ITEM(3000, 0, 0));
141static const DECLARE_TLV_DB_SCALE(pgam_tlv, 0, 100, 0);
142static const DECLARE_TLV_DB_SCALE(anth_tlv, -7600, 400, 1);
143static const DECLARE_TLV_DB_SCALE(agcth_tlv, -1800, 100, 0);
144
145static const char * const agchld_text[] = {
146 "AGC Disabled", "50ms", "100ms", "400ms"
147};
148
149static SOC_ENUM_SINGLE_DECL(agchld_enum, MAX9860_MICADC,
150 MAX9860_AGCHLD_SHIFT, agchld_text);
151
152static const char * const agcsrc_text[] = {
153 "Left ADC", "Left/Right ADC"
154};
155
156static SOC_ENUM_SINGLE_DECL(agcsrc_enum, MAX9860_MICADC,
157 MAX9860_AGCSRC_SHIFT, agcsrc_text);
158
159static const char * const agcatk_text[] = {
160 "3ms", "12ms", "50ms", "200ms"
161};
162
163static SOC_ENUM_SINGLE_DECL(agcatk_enum, MAX9860_MICADC,
164 MAX9860_AGCATK_SHIFT, agcatk_text);
165
166static const char * const agcrls_text[] = {
167 "78ms", "156ms", "312ms", "625ms",
168 "1.25s", "2.5s", "5s", "10s"
169};
170
171static SOC_ENUM_SINGLE_DECL(agcrls_enum, MAX9860_MICADC,
172 MAX9860_AGCRLS_SHIFT, agcrls_text);
173
174static const char * const filter_text[] = {
175 "Disabled",
176 "Elliptical HP 217Hz notch (16kHz)",
177 "Butterworth HP 500Hz (16kHz)",
178 "Elliptical HP 217Hz notch (8kHz)",
179 "Butterworth HP 500Hz (8kHz)",
180 "Butterworth HP 200Hz (48kHz)"
181};
182
183static SOC_ENUM_SINGLE_DECL(avflt_enum, MAX9860_VOICEFLTR,
184 MAX9860_AVFLT_SHIFT, filter_text);
185
186static SOC_ENUM_SINGLE_DECL(dvflt_enum, MAX9860_VOICEFLTR,
187 MAX9860_DVFLT_SHIFT, filter_text);
188
189static const struct snd_kcontrol_new max9860_controls[] = {
190SOC_SINGLE_TLV("Master Playback Volume", MAX9860_DACATTN,
191 MAX9860_DVA_SHIFT, MAX9860_DVA_MUTE, 1, dva_tlv),
192SOC_SINGLE_TLV("DAC Gain Volume", MAX9860_DACGAIN,
193 MAX9860_DVG_SHIFT, MAX9860_DVG_MAX, 0, dvg_tlv),
194SOC_DOUBLE_TLV("Line Capture Volume", MAX9860_ADCLEVEL,
195 MAX9860_ADCLL_SHIFT, MAX9860_ADCRL_SHIFT, MAX9860_ADCxL_MIN, 1,
196 adc_tlv),
197
198SOC_ENUM("AGC Hold Time", agchld_enum),
199SOC_ENUM("AGC/Noise Gate Source", agcsrc_enum),
200SOC_ENUM("AGC Attack Time", agcatk_enum),
201SOC_ENUM("AGC Release Time", agcrls_enum),
202
203SOC_SINGLE_TLV("Noise Gate Threshold Volume", MAX9860_NOISEGATE,
204 MAX9860_ANTH_SHIFT, MAX9860_ANTH_MAX, 0, anth_tlv),
205SOC_SINGLE_TLV("AGC Signal Threshold Volume", MAX9860_NOISEGATE,
206 MAX9860_AGCTH_SHIFT, MAX9860_AGCTH_MIN, 1, agcth_tlv),
207
208SOC_SINGLE_TLV("Mic PGA Volume", MAX9860_MICGAIN,
209 MAX9860_PGAM_SHIFT, MAX9860_PGAM_MIN, 1, pgam_tlv),
210SOC_SINGLE_TLV("Mic Preamp Volume", MAX9860_MICGAIN,
211 MAX9860_PAM_SHIFT, MAX9860_PAM_MAX, 0, pam_tlv),
212
213SOC_ENUM("ADC Filter", avflt_enum),
214SOC_ENUM("DAC Filter", dvflt_enum),
215};
216
217static const struct snd_soc_dapm_widget max9860_dapm_widgets[] = {
218SND_SOC_DAPM_INPUT("MICL"),
219SND_SOC_DAPM_INPUT("MICR"),
220
221SND_SOC_DAPM_ADC("ADCL", NULL, MAX9860_PWRMAN, MAX9860_ADCLEN_SHIFT, 0),
222SND_SOC_DAPM_ADC("ADCR", NULL, MAX9860_PWRMAN, MAX9860_ADCREN_SHIFT, 0),
223
224SND_SOC_DAPM_AIF_OUT("AIFOUTL", "Capture", 0, SND_SOC_NOPM, 0, 0),
225SND_SOC_DAPM_AIF_OUT("AIFOUTR", "Capture", 1, SND_SOC_NOPM, 0, 0),
226
227SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0),
228SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0),
229
230SND_SOC_DAPM_DAC("DAC", NULL, MAX9860_PWRMAN, MAX9860_DACEN_SHIFT, 0),
231
232SND_SOC_DAPM_OUTPUT("OUT"),
233
234SND_SOC_DAPM_SUPPLY("Supply", SND_SOC_NOPM, 0, 0,
235 NULL, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
236SND_SOC_DAPM_REGULATOR_SUPPLY("AVDD", 0, 0),
237SND_SOC_DAPM_REGULATOR_SUPPLY("DVDD", 0, 0),
238SND_SOC_DAPM_CLOCK_SUPPLY("mclk"),
239};
240
241static const struct snd_soc_dapm_route max9860_dapm_routes[] = {
242 { "ADCL", NULL, "MICL" },
243 { "ADCR", NULL, "MICR" },
244 { "AIFOUTL", NULL, "ADCL" },
245 { "AIFOUTR", NULL, "ADCR" },
246
247 { "DAC", NULL, "AIFINL" },
248 { "DAC", NULL, "AIFINR" },
249 { "OUT", NULL, "DAC" },
250
251 { "Supply", NULL, "AVDD" },
252 { "Supply", NULL, "DVDD" },
253 { "Supply", NULL, "mclk" },
254
255 { "DAC", NULL, "Supply" },
256 { "ADCL", NULL, "Supply" },
257 { "ADCR", NULL, "Supply" },
258};
259
260static int max9860_hw_params(struct snd_pcm_substream *substream,
261 struct snd_pcm_hw_params *params,
262 struct snd_soc_dai *dai)
263{
264 struct snd_soc_codec *codec = dai->codec;
265 struct max9860_priv *max9860 = snd_soc_codec_get_drvdata(codec);
266 u8 master;
267 u8 ifc1a = 0;
268 u8 ifc1b = 0;
269 u8 sysclk = 0;
270 unsigned long n;
271 int ret;
272
273 dev_dbg(codec->dev, "hw_params %u Hz, %u channels\n",
274 params_rate(params),
275 params_channels(params));
276
277 if (params_channels(params) == 2)
278 ifc1b |= MAX9860_ST;
279
280 switch (max9860->fmt & SND_SOC_DAIFMT_MASTER_MASK) {
281 case SND_SOC_DAIFMT_CBS_CFS:
282 master = 0;
283 break;
284 case SND_SOC_DAIFMT_CBM_CFM:
285 master = MAX9860_MASTER;
286 break;
287 default:
288 return -EINVAL;
289 }
290 ifc1a |= master;
291
292 if (master) {
293 if (params_width(params) * params_channels(params) > 48)
294 ifc1b |= MAX9860_BSEL_64X;
295 else
296 ifc1b |= MAX9860_BSEL_48X;
297 }
298
299 switch (max9860->fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
300 case SND_SOC_DAIFMT_I2S:
301 ifc1a |= MAX9860_DDLY;
302 ifc1b |= MAX9860_ADLY;
303 break;
304 case SND_SOC_DAIFMT_LEFT_J:
305 ifc1a |= MAX9860_WCI;
306 break;
307 case SND_SOC_DAIFMT_DSP_A:
308 if (params_width(params) != 16) {
309 dev_err(codec->dev,
310 "DSP_A works for 16 bits per sample only.\n");
311 return -EINVAL;
312 }
313 ifc1a |= MAX9860_DDLY | MAX9860_WCI | MAX9860_HIZ | MAX9860_TDM;
314 ifc1b |= MAX9860_ADLY;
315 break;
316 case SND_SOC_DAIFMT_DSP_B:
317 if (params_width(params) != 16) {
318 dev_err(codec->dev,
319 "DSP_B works for 16 bits per sample only.\n");
320 return -EINVAL;
321 }
322 ifc1a |= MAX9860_WCI | MAX9860_HIZ | MAX9860_TDM;
323 break;
324 default:
325 return -EINVAL;
326 }
327
328 switch (max9860->fmt & SND_SOC_DAIFMT_INV_MASK) {
329 case SND_SOC_DAIFMT_NB_NF:
330 break;
331 case SND_SOC_DAIFMT_NB_IF:
332 switch (max9860->fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
333 case SND_SOC_DAIFMT_DSP_A:
334 case SND_SOC_DAIFMT_DSP_B:
335 return -EINVAL;
336 }
337 ifc1a ^= MAX9860_WCI;
338 break;
339 case SND_SOC_DAIFMT_IB_IF:
340 switch (max9860->fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
341 case SND_SOC_DAIFMT_DSP_A:
342 case SND_SOC_DAIFMT_DSP_B:
343 return -EINVAL;
344 }
345 ifc1a ^= MAX9860_WCI;
346
347 case SND_SOC_DAIFMT_IB_NF:
348 ifc1a ^= MAX9860_DBCI;
349 ifc1b ^= MAX9860_ABCI;
350 break;
351 default:
352 return -EINVAL;
353 }
354
355 dev_dbg(codec->dev, "IFC1A %02x\n", ifc1a);
356 ret = regmap_write(max9860->regmap, MAX9860_IFC1A, ifc1a);
357 if (ret) {
358 dev_err(codec->dev, "Failed to set IFC1A: %d\n", ret);
359 return ret;
360 }
361 dev_dbg(codec->dev, "IFC1B %02x\n", ifc1b);
362 ret = regmap_write(max9860->regmap, MAX9860_IFC1B, ifc1b);
363 if (ret) {
364 dev_err(codec->dev, "Failed to set IFC1B: %d\n", ret);
365 return ret;
366 }
367
368
369
370
371
372
373
374 if (params_rate(params) == 8000 || params_rate(params) == 16000) {
375 if (master) {
376 switch (max9860->pclk_rate) {
377 case 12000000:
378 sysclk = MAX9860_FREQ_12MHZ;
379 break;
380 case 13000000:
381 sysclk = MAX9860_FREQ_13MHZ;
382 break;
383 case 19200000:
384 sysclk = MAX9860_FREQ_19_2MHZ;
385 break;
386 default:
387
388
389
390
391
392 break;
393 }
394
395 if (sysclk && params_rate(params) == 16000)
396 sysclk |= MAX9860_16KHZ;
397 }
398 }
399
400
401
402
403
404
405
406
407 n = DIV_ROUND_CLOSEST_ULL(65536ULL * 96 * params_rate(params),
408 max9860->pclk_rate);
409
410 if (!sysclk) {
411
412 if (params_rate(params) > 24000)
413 sysclk |= MAX9860_16KHZ;
414
415 if (!master)
416 n |= 1;
417 }
418
419 sysclk |= max9860->psclk;
420 dev_dbg(codec->dev, "SYSCLK %02x\n", sysclk);
421 ret = regmap_write(max9860->regmap,
422 MAX9860_SYSCLK, sysclk);
423 if (ret) {
424 dev_err(codec->dev, "Failed to set SYSCLK: %d\n", ret);
425 return ret;
426 }
427 dev_dbg(codec->dev, "N %lu\n", n);
428 ret = regmap_write(max9860->regmap,
429 MAX9860_AUDIOCLKHIGH, n >> 8);
430 if (ret) {
431 dev_err(codec->dev, "Failed to set NHI: %d\n", ret);
432 return ret;
433 }
434 ret = regmap_write(max9860->regmap,
435 MAX9860_AUDIOCLKLOW, n & 0xff);
436 if (ret) {
437 dev_err(codec->dev, "Failed to set NLO: %d\n", ret);
438 return ret;
439 }
440
441 if (!master) {
442 dev_dbg(codec->dev, "Enable PLL\n");
443 ret = regmap_update_bits(max9860->regmap, MAX9860_AUDIOCLKHIGH,
444 MAX9860_PLL, MAX9860_PLL);
445 if (ret) {
446 dev_err(codec->dev, "Failed to enable PLL: %d\n", ret);
447 return ret;
448 }
449 }
450
451 return 0;
452}
453
454static int max9860_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
455{
456 struct snd_soc_codec *codec = dai->codec;
457 struct max9860_priv *max9860 = snd_soc_codec_get_drvdata(codec);
458
459 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
460 case SND_SOC_DAIFMT_CBM_CFM:
461 case SND_SOC_DAIFMT_CBS_CFS:
462 max9860->fmt = fmt;
463 return 0;
464
465 default:
466 return -EINVAL;
467 }
468}
469
470static const struct snd_soc_dai_ops max9860_dai_ops = {
471 .hw_params = max9860_hw_params,
472 .set_fmt = max9860_set_fmt,
473};
474
475static struct snd_soc_dai_driver max9860_dai = {
476 .name = "max9860-hifi",
477 .playback = {
478 .stream_name = "Playback",
479 .channels_min = 1,
480 .channels_max = 2,
481 .rates = SNDRV_PCM_RATE_CONTINUOUS,
482 .rate_min = 8000,
483 .rate_max = 48000,
484 .formats = SNDRV_PCM_FMTBIT_S16_LE |
485 SNDRV_PCM_FMTBIT_S24_LE |
486 SNDRV_PCM_FMTBIT_S32_LE,
487 },
488 .capture = {
489 .stream_name = "Capture",
490 .channels_min = 1,
491 .channels_max = 2,
492 .rates = SNDRV_PCM_RATE_CONTINUOUS,
493 .rate_min = 8000,
494 .rate_max = 48000,
495 .formats = SNDRV_PCM_FMTBIT_S16_LE |
496 SNDRV_PCM_FMTBIT_S24_LE |
497 SNDRV_PCM_FMTBIT_S32_LE,
498 },
499 .ops = &max9860_dai_ops,
500 .symmetric_rates = 1,
501};
502
503static int max9860_set_bias_level(struct snd_soc_codec *codec,
504 enum snd_soc_bias_level level)
505{
506 struct max9860_priv *max9860 = dev_get_drvdata(codec->dev);
507 int ret;
508
509 switch (level) {
510 case SND_SOC_BIAS_ON:
511 case SND_SOC_BIAS_PREPARE:
512 break;
513
514 case SND_SOC_BIAS_STANDBY:
515 ret = regmap_update_bits(max9860->regmap, MAX9860_PWRMAN,
516 MAX9860_SHDN, MAX9860_SHDN);
517 if (ret) {
518 dev_err(codec->dev, "Failed to remove SHDN: %d\n", ret);
519 return ret;
520 }
521 break;
522
523 case SND_SOC_BIAS_OFF:
524 ret = regmap_update_bits(max9860->regmap, MAX9860_PWRMAN,
525 MAX9860_SHDN, 0);
526 if (ret) {
527 dev_err(codec->dev, "Failed to request SHDN: %d\n",
528 ret);
529 return ret;
530 }
531 break;
532 }
533
534 return 0;
535}
536
537static const struct snd_soc_codec_driver max9860_codec_driver = {
538 .set_bias_level = max9860_set_bias_level,
539 .idle_bias_off = true,
540
541 .component_driver = {
542 .controls = max9860_controls,
543 .num_controls = ARRAY_SIZE(max9860_controls),
544 .dapm_widgets = max9860_dapm_widgets,
545 .num_dapm_widgets = ARRAY_SIZE(max9860_dapm_widgets),
546 .dapm_routes = max9860_dapm_routes,
547 .num_dapm_routes = ARRAY_SIZE(max9860_dapm_routes),
548 },
549};
550
551#ifdef CONFIG_PM
552static int max9860_suspend(struct device *dev)
553{
554 struct max9860_priv *max9860 = dev_get_drvdata(dev);
555 int ret;
556
557 ret = regmap_update_bits(max9860->regmap, MAX9860_SYSCLK,
558 MAX9860_PSCLK, MAX9860_PSCLK_OFF);
559 if (ret) {
560 dev_err(dev, "Failed to disable clock: %d\n", ret);
561 return ret;
562 }
563
564 regulator_disable(max9860->dvddio);
565
566 return 0;
567}
568
569static int max9860_resume(struct device *dev)
570{
571 struct max9860_priv *max9860 = dev_get_drvdata(dev);
572 int ret;
573
574 ret = regulator_enable(max9860->dvddio);
575 if (ret) {
576 dev_err(dev, "Failed to enable DVDDIO: %d\n", ret);
577 return ret;
578 }
579
580 regcache_cache_only(max9860->regmap, false);
581 ret = regcache_sync(max9860->regmap);
582 if (ret) {
583 dev_err(dev, "Failed to sync cache: %d\n", ret);
584 return ret;
585 }
586
587 ret = regmap_update_bits(max9860->regmap, MAX9860_SYSCLK,
588 MAX9860_PSCLK, max9860->psclk);
589 if (ret) {
590 dev_err(dev, "Failed to enable clock: %d\n", ret);
591 return ret;
592 }
593
594 return 0;
595}
596#endif
597
598static const struct dev_pm_ops max9860_pm_ops = {
599 SET_RUNTIME_PM_OPS(max9860_suspend, max9860_resume, NULL)
600};
601
602static int max9860_probe(struct i2c_client *i2c,
603 const struct i2c_device_id *id)
604{
605 struct device *dev = &i2c->dev;
606 struct max9860_priv *max9860;
607 int ret;
608 struct clk *mclk;
609 unsigned long mclk_rate;
610 int i;
611 int intr;
612
613 max9860 = devm_kzalloc(dev, sizeof(struct max9860_priv), GFP_KERNEL);
614 if (!max9860)
615 return -ENOMEM;
616
617 max9860->dvddio = devm_regulator_get(dev, "DVDDIO");
618 if (IS_ERR(max9860->dvddio)) {
619 ret = PTR_ERR(max9860->dvddio);
620 if (ret != -EPROBE_DEFER)
621 dev_err(dev, "Failed to get DVDDIO supply: %d\n", ret);
622 return ret;
623 }
624
625 max9860->dvddio_nb.notifier_call = max9860_dvddio_event;
626
627 ret = regulator_register_notifier(max9860->dvddio, &max9860->dvddio_nb);
628 if (ret)
629 dev_err(dev, "Failed to register DVDDIO notifier: %d\n", ret);
630
631 ret = regulator_enable(max9860->dvddio);
632 if (ret != 0) {
633 dev_err(dev, "Failed to enable DVDDIO: %d\n", ret);
634 return ret;
635 }
636
637 max9860->regmap = devm_regmap_init_i2c(i2c, &max9860_regmap);
638 if (IS_ERR(max9860->regmap)) {
639 ret = PTR_ERR(max9860->regmap);
640 goto err_regulator;
641 }
642
643 dev_set_drvdata(dev, max9860);
644
645
646
647
648
649
650 mclk = clk_get(dev, "mclk");
651
652 if (IS_ERR(mclk)) {
653 ret = PTR_ERR(mclk);
654 if (ret != -EPROBE_DEFER)
655 dev_err(dev, "Failed to get MCLK: %d\n", ret);
656 goto err_regulator;
657 }
658
659 mclk_rate = clk_get_rate(mclk);
660 clk_put(mclk);
661
662 if (mclk_rate > 60000000 || mclk_rate < 10000000) {
663 dev_err(dev, "Bad mclk %luHz (needs 10MHz - 60MHz)\n",
664 mclk_rate);
665 ret = -EINVAL;
666 goto err_regulator;
667 }
668 if (mclk_rate >= 40000000)
669 max9860->psclk = 3;
670 else if (mclk_rate >= 20000000)
671 max9860->psclk = 2;
672 else
673 max9860->psclk = 1;
674 max9860->pclk_rate = mclk_rate >> (max9860->psclk - 1);
675 max9860->psclk <<= MAX9860_PSCLK_SHIFT;
676 dev_dbg(dev, "mclk %lu pclk %lu\n", mclk_rate, max9860->pclk_rate);
677
678 regcache_cache_bypass(max9860->regmap, true);
679 for (i = 0; i < max9860_regmap.num_reg_defaults; ++i) {
680 ret = regmap_write(max9860->regmap,
681 max9860_regmap.reg_defaults[i].reg,
682 max9860_regmap.reg_defaults[i].def);
683 if (ret) {
684 dev_err(dev, "Failed to initialize register %u: %d\n",
685 max9860_regmap.reg_defaults[i].reg, ret);
686 goto err_regulator;
687 }
688 }
689 regcache_cache_bypass(max9860->regmap, false);
690
691 ret = regmap_read(max9860->regmap, MAX9860_INTRSTATUS, &intr);
692 if (ret) {
693 dev_err(dev, "Failed to clear INTRSTATUS: %d\n", ret);
694 goto err_regulator;
695 }
696
697 pm_runtime_set_active(dev);
698 pm_runtime_enable(dev);
699 pm_runtime_idle(dev);
700
701 ret = snd_soc_register_codec(dev, &max9860_codec_driver,
702 &max9860_dai, 1);
703 if (ret) {
704 dev_err(dev, "Failed to register CODEC: %d\n", ret);
705 goto err_pm;
706 }
707
708 return 0;
709
710err_pm:
711 pm_runtime_disable(dev);
712err_regulator:
713 regulator_disable(max9860->dvddio);
714 return ret;
715}
716
717static int max9860_remove(struct i2c_client *i2c)
718{
719 struct device *dev = &i2c->dev;
720 struct max9860_priv *max9860 = dev_get_drvdata(dev);
721
722 snd_soc_unregister_codec(dev);
723 pm_runtime_disable(dev);
724 regulator_disable(max9860->dvddio);
725 return 0;
726}
727
728static const struct i2c_device_id max9860_i2c_id[] = {
729 { "max9860", },
730 { }
731};
732MODULE_DEVICE_TABLE(i2c, max9860_i2c_id);
733
734static const struct of_device_id max9860_of_match[] = {
735 { .compatible = "maxim,max9860", },
736 { }
737};
738MODULE_DEVICE_TABLE(of, max9860_of_match);
739
740static struct i2c_driver max9860_i2c_driver = {
741 .probe = max9860_probe,
742 .remove = max9860_remove,
743 .id_table = max9860_i2c_id,
744 .driver = {
745 .name = "max9860",
746 .of_match_table = max9860_of_match,
747 .pm = &max9860_pm_ops,
748 },
749};
750
751module_i2c_driver(max9860_i2c_driver);
752
753MODULE_DESCRIPTION("ASoC MAX9860 Mono Audio Voice Codec driver");
754MODULE_AUTHOR("Peter Rosin <peda@axentia.se>");
755MODULE_LICENSE("GPL v2");
756
