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16#include <linux/module.h>
17#include <linux/moduleparam.h>
18#include <linux/init.h>
19#include <linux/delay.h>
20#include <linux/pm.h>
21#include <linux/i2c.h>
22#include <linux/slab.h>
23#include <linux/regmap.h>
24#include <linux/regulator/consumer.h>
25#include <linux/spi/spi.h>
26#include <linux/of_device.h>
27#include <linux/mutex.h>
28#include <sound/core.h>
29#include <sound/pcm.h>
30#include <sound/pcm_params.h>
31#include <sound/soc.h>
32#include <sound/initval.h>
33#include <sound/tlv.h>
34
35#include "wm8731.h"
36
37#define WM8731_NUM_SUPPLIES 4
38static const char *wm8731_supply_names[WM8731_NUM_SUPPLIES] = {
39 "AVDD",
40 "HPVDD",
41 "DCVDD",
42 "DBVDD",
43};
44
45
46struct wm8731_priv {
47 struct regmap *regmap;
48 struct regulator_bulk_data supplies[WM8731_NUM_SUPPLIES];
49 const struct snd_pcm_hw_constraint_list *constraints;
50 unsigned int sysclk;
51 int sysclk_type;
52 int playback_fs;
53 bool deemph;
54
55 struct mutex lock;
56};
57
58
59
60
61
62static const struct reg_default wm8731_reg_defaults[] = {
63 { 0, 0x0097 },
64 { 1, 0x0097 },
65 { 2, 0x0079 },
66 { 3, 0x0079 },
67 { 4, 0x000a },
68 { 5, 0x0008 },
69 { 6, 0x009f },
70 { 7, 0x000a },
71 { 8, 0x0000 },
72 { 9, 0x0000 },
73};
74
75static bool wm8731_volatile(struct device *dev, unsigned int reg)
76{
77 return reg == WM8731_RESET;
78}
79
80static bool wm8731_writeable(struct device *dev, unsigned int reg)
81{
82 return reg <= WM8731_RESET;
83}
84
85#define wm8731_reset(c) snd_soc_write(c, WM8731_RESET, 0)
86
87static const char *wm8731_input_select[] = {"Line In", "Mic"};
88
89static SOC_ENUM_SINGLE_DECL(wm8731_insel_enum,
90 WM8731_APANA, 2, wm8731_input_select);
91
92static int wm8731_deemph[] = { 0, 32000, 44100, 48000 };
93
94static int wm8731_set_deemph(struct snd_soc_codec *codec)
95{
96 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
97 int val, i, best;
98
99
100
101
102 if (wm8731->deemph) {
103 best = 1;
104 for (i = 2; i < ARRAY_SIZE(wm8731_deemph); i++) {
105 if (abs(wm8731_deemph[i] - wm8731->playback_fs) <
106 abs(wm8731_deemph[best] - wm8731->playback_fs))
107 best = i;
108 }
109
110 val = best << 1;
111 } else {
112 best = 0;
113 val = 0;
114 }
115
116 dev_dbg(codec->dev, "Set deemphasis %d (%dHz)\n",
117 best, wm8731_deemph[best]);
118
119 return snd_soc_update_bits(codec, WM8731_APDIGI, 0x6, val);
120}
121
122static int wm8731_get_deemph(struct snd_kcontrol *kcontrol,
123 struct snd_ctl_elem_value *ucontrol)
124{
125 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
126 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
127
128 ucontrol->value.integer.value[0] = wm8731->deemph;
129
130 return 0;
131}
132
133static int wm8731_put_deemph(struct snd_kcontrol *kcontrol,
134 struct snd_ctl_elem_value *ucontrol)
135{
136 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
137 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
138 int deemph = ucontrol->value.integer.value[0];
139 int ret = 0;
140
141 if (deemph > 1)
142 return -EINVAL;
143
144 mutex_lock(&wm8731->lock);
145 if (wm8731->deemph != deemph) {
146 wm8731->deemph = deemph;
147
148 wm8731_set_deemph(codec);
149
150 ret = 1;
151 }
152 mutex_unlock(&wm8731->lock);
153
154 return ret;
155}
156
157static const DECLARE_TLV_DB_SCALE(in_tlv, -3450, 150, 0);
158static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -1500, 300, 0);
159static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
160static const DECLARE_TLV_DB_SCALE(mic_tlv, 0, 2000, 0);
161
162static const struct snd_kcontrol_new wm8731_snd_controls[] = {
163
164SOC_DOUBLE_R_TLV("Master Playback Volume", WM8731_LOUT1V, WM8731_ROUT1V,
165 0, 127, 0, out_tlv),
166SOC_DOUBLE_R("Master Playback ZC Switch", WM8731_LOUT1V, WM8731_ROUT1V,
167 7, 1, 0),
168
169SOC_DOUBLE_R_TLV("Capture Volume", WM8731_LINVOL, WM8731_RINVOL, 0, 31, 0,
170 in_tlv),
171SOC_DOUBLE_R("Line Capture Switch", WM8731_LINVOL, WM8731_RINVOL, 7, 1, 1),
172
173SOC_SINGLE_TLV("Mic Boost Volume", WM8731_APANA, 0, 1, 0, mic_tlv),
174SOC_SINGLE("Mic Capture Switch", WM8731_APANA, 1, 1, 1),
175
176SOC_SINGLE_TLV("Sidetone Playback Volume", WM8731_APANA, 6, 3, 1,
177 sidetone_tlv),
178
179SOC_SINGLE("ADC High Pass Filter Switch", WM8731_APDIGI, 0, 1, 1),
180SOC_SINGLE("Store DC Offset Switch", WM8731_APDIGI, 4, 1, 0),
181
182SOC_SINGLE_BOOL_EXT("Playback Deemphasis Switch", 0,
183 wm8731_get_deemph, wm8731_put_deemph),
184};
185
186
187static const struct snd_kcontrol_new wm8731_output_mixer_controls[] = {
188SOC_DAPM_SINGLE("Line Bypass Switch", WM8731_APANA, 3, 1, 0),
189SOC_DAPM_SINGLE("Mic Sidetone Switch", WM8731_APANA, 5, 1, 0),
190SOC_DAPM_SINGLE("HiFi Playback Switch", WM8731_APANA, 4, 1, 0),
191};
192
193
194static const struct snd_kcontrol_new wm8731_input_mux_controls =
195SOC_DAPM_ENUM("Input Select", wm8731_insel_enum);
196
197static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
198SND_SOC_DAPM_SUPPLY("ACTIVE",WM8731_ACTIVE, 0, 0, NULL, 0),
199SND_SOC_DAPM_SUPPLY("OSC", WM8731_PWR, 5, 1, NULL, 0),
200SND_SOC_DAPM_MIXER("Output Mixer", WM8731_PWR, 4, 1,
201 &wm8731_output_mixer_controls[0],
202 ARRAY_SIZE(wm8731_output_mixer_controls)),
203SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8731_PWR, 3, 1),
204SND_SOC_DAPM_OUTPUT("LOUT"),
205SND_SOC_DAPM_OUTPUT("LHPOUT"),
206SND_SOC_DAPM_OUTPUT("ROUT"),
207SND_SOC_DAPM_OUTPUT("RHPOUT"),
208SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8731_PWR, 2, 1),
209SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &wm8731_input_mux_controls),
210SND_SOC_DAPM_PGA("Line Input", WM8731_PWR, 0, 1, NULL, 0),
211SND_SOC_DAPM_MICBIAS("Mic Bias", WM8731_PWR, 1, 1),
212SND_SOC_DAPM_INPUT("MICIN"),
213SND_SOC_DAPM_INPUT("RLINEIN"),
214SND_SOC_DAPM_INPUT("LLINEIN"),
215};
216
217static int wm8731_check_osc(struct snd_soc_dapm_widget *source,
218 struct snd_soc_dapm_widget *sink)
219{
220 struct snd_soc_codec *codec = snd_soc_dapm_to_codec(source->dapm);
221 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
222
223 return wm8731->sysclk_type == WM8731_SYSCLK_XTAL;
224}
225
226static const struct snd_soc_dapm_route wm8731_intercon[] = {
227 {"DAC", NULL, "OSC", wm8731_check_osc},
228 {"ADC", NULL, "OSC", wm8731_check_osc},
229 {"DAC", NULL, "ACTIVE"},
230 {"ADC", NULL, "ACTIVE"},
231
232
233 {"Output Mixer", "Line Bypass Switch", "Line Input"},
234 {"Output Mixer", "HiFi Playback Switch", "DAC"},
235 {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"},
236
237
238 {"RHPOUT", NULL, "Output Mixer"},
239 {"ROUT", NULL, "Output Mixer"},
240 {"LHPOUT", NULL, "Output Mixer"},
241 {"LOUT", NULL, "Output Mixer"},
242
243
244 {"Input Mux", "Line In", "Line Input"},
245 {"Input Mux", "Mic", "Mic Bias"},
246 {"ADC", NULL, "Input Mux"},
247
248
249 {"Line Input", NULL, "LLINEIN"},
250 {"Line Input", NULL, "RLINEIN"},
251 {"Mic Bias", NULL, "MICIN"},
252};
253
254struct _coeff_div {
255 u32 mclk;
256 u32 rate;
257 u16 fs;
258 u8 sr:4;
259 u8 bosr:1;
260 u8 usb:1;
261};
262
263
264static const struct _coeff_div coeff_div[] = {
265
266 {12288000, 48000, 256, 0x0, 0x0, 0x0},
267 {18432000, 48000, 384, 0x0, 0x1, 0x0},
268 {12000000, 48000, 250, 0x0, 0x0, 0x1},
269
270
271 {12288000, 32000, 384, 0x6, 0x0, 0x0},
272 {18432000, 32000, 576, 0x6, 0x1, 0x0},
273 {12000000, 32000, 375, 0x6, 0x0, 0x1},
274
275
276 {12288000, 8000, 1536, 0x3, 0x0, 0x0},
277 {18432000, 8000, 2304, 0x3, 0x1, 0x0},
278 {11289600, 8000, 1408, 0xb, 0x0, 0x0},
279 {16934400, 8000, 2112, 0xb, 0x1, 0x0},
280 {12000000, 8000, 1500, 0x3, 0x0, 0x1},
281
282
283 {12288000, 96000, 128, 0x7, 0x0, 0x0},
284 {18432000, 96000, 192, 0x7, 0x1, 0x0},
285 {12000000, 96000, 125, 0x7, 0x0, 0x1},
286
287
288 {11289600, 44100, 256, 0x8, 0x0, 0x0},
289 {16934400, 44100, 384, 0x8, 0x1, 0x0},
290 {12000000, 44100, 272, 0x8, 0x1, 0x1},
291
292
293 {11289600, 88200, 128, 0xf, 0x0, 0x0},
294 {16934400, 88200, 192, 0xf, 0x1, 0x0},
295 {12000000, 88200, 136, 0xf, 0x1, 0x1},
296};
297
298
299static const unsigned int wm8731_rates_12000000[] = {
300 8000, 32000, 44100, 48000, 96000, 88200,
301};
302
303static const unsigned int wm8731_rates_12288000_18432000[] = {
304 8000, 32000, 48000, 96000,
305};
306
307static const unsigned int wm8731_rates_11289600_16934400[] = {
308 8000, 44100, 88200,
309};
310
311static const struct snd_pcm_hw_constraint_list wm8731_constraints_12000000 = {
312 .list = wm8731_rates_12000000,
313 .count = ARRAY_SIZE(wm8731_rates_12000000),
314};
315
316static const
317struct snd_pcm_hw_constraint_list wm8731_constraints_12288000_18432000 = {
318 .list = wm8731_rates_12288000_18432000,
319 .count = ARRAY_SIZE(wm8731_rates_12288000_18432000),
320};
321
322static const
323struct snd_pcm_hw_constraint_list wm8731_constraints_11289600_16934400 = {
324 .list = wm8731_rates_11289600_16934400,
325 .count = ARRAY_SIZE(wm8731_rates_11289600_16934400),
326};
327
328static inline int get_coeff(int mclk, int rate)
329{
330 int i;
331
332 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
333 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
334 return i;
335 }
336 return 0;
337}
338
339static int wm8731_hw_params(struct snd_pcm_substream *substream,
340 struct snd_pcm_hw_params *params,
341 struct snd_soc_dai *dai)
342{
343 struct snd_soc_codec *codec = dai->codec;
344 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
345 u16 iface = snd_soc_read(codec, WM8731_IFACE) & 0xfff3;
346 int i = get_coeff(wm8731->sysclk, params_rate(params));
347 u16 srate = (coeff_div[i].sr << 2) |
348 (coeff_div[i].bosr << 1) | coeff_div[i].usb;
349
350 wm8731->playback_fs = params_rate(params);
351
352 snd_soc_write(codec, WM8731_SRATE, srate);
353
354
355 switch (params_width(params)) {
356 case 16:
357 break;
358 case 20:
359 iface |= 0x0004;
360 break;
361 case 24:
362 iface |= 0x0008;
363 break;
364 }
365
366 wm8731_set_deemph(codec);
367
368 snd_soc_write(codec, WM8731_IFACE, iface);
369 return 0;
370}
371
372static int wm8731_mute(struct snd_soc_dai *dai, int mute)
373{
374 struct snd_soc_codec *codec = dai->codec;
375 u16 mute_reg = snd_soc_read(codec, WM8731_APDIGI) & 0xfff7;
376
377 if (mute)
378 snd_soc_write(codec, WM8731_APDIGI, mute_reg | 0x8);
379 else
380 snd_soc_write(codec, WM8731_APDIGI, mute_reg);
381 return 0;
382}
383
384static int wm8731_set_dai_sysclk(struct snd_soc_dai *codec_dai,
385 int clk_id, unsigned int freq, int dir)
386{
387 struct snd_soc_codec *codec = codec_dai->codec;
388 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
389
390 switch (clk_id) {
391 case WM8731_SYSCLK_XTAL:
392 case WM8731_SYSCLK_MCLK:
393 wm8731->sysclk_type = clk_id;
394 break;
395 default:
396 return -EINVAL;
397 }
398
399 switch (freq) {
400 case 0:
401 wm8731->constraints = NULL;
402 break;
403 case 12000000:
404 wm8731->constraints = &wm8731_constraints_12000000;
405 break;
406 case 12288000:
407 case 18432000:
408 wm8731->constraints = &wm8731_constraints_12288000_18432000;
409 break;
410 case 16934400:
411 case 11289600:
412 wm8731->constraints = &wm8731_constraints_11289600_16934400;
413 break;
414 default:
415 return -EINVAL;
416 }
417
418 wm8731->sysclk = freq;
419
420 snd_soc_dapm_sync(&codec->dapm);
421
422 return 0;
423}
424
425
426static int wm8731_set_dai_fmt(struct snd_soc_dai *codec_dai,
427 unsigned int fmt)
428{
429 struct snd_soc_codec *codec = codec_dai->codec;
430 u16 iface = 0;
431
432
433 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
434 case SND_SOC_DAIFMT_CBM_CFM:
435 iface |= 0x0040;
436 break;
437 case SND_SOC_DAIFMT_CBS_CFS:
438 break;
439 default:
440 return -EINVAL;
441 }
442
443
444 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
445 case SND_SOC_DAIFMT_I2S:
446 iface |= 0x0002;
447 break;
448 case SND_SOC_DAIFMT_RIGHT_J:
449 break;
450 case SND_SOC_DAIFMT_LEFT_J:
451 iface |= 0x0001;
452 break;
453 case SND_SOC_DAIFMT_DSP_A:
454 iface |= 0x0013;
455 break;
456 case SND_SOC_DAIFMT_DSP_B:
457 iface |= 0x0003;
458 break;
459 default:
460 return -EINVAL;
461 }
462
463
464 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
465 case SND_SOC_DAIFMT_NB_NF:
466 break;
467 case SND_SOC_DAIFMT_IB_IF:
468 iface |= 0x0090;
469 break;
470 case SND_SOC_DAIFMT_IB_NF:
471 iface |= 0x0080;
472 break;
473 case SND_SOC_DAIFMT_NB_IF:
474 iface |= 0x0010;
475 break;
476 default:
477 return -EINVAL;
478 }
479
480
481 snd_soc_write(codec, WM8731_IFACE, iface);
482 return 0;
483}
484
485static int wm8731_set_bias_level(struct snd_soc_codec *codec,
486 enum snd_soc_bias_level level)
487{
488 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
489 int ret;
490 u16 reg;
491
492 switch (level) {
493 case SND_SOC_BIAS_ON:
494 break;
495 case SND_SOC_BIAS_PREPARE:
496 break;
497 case SND_SOC_BIAS_STANDBY:
498 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
499 ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies),
500 wm8731->supplies);
501 if (ret != 0)
502 return ret;
503
504 regcache_sync(wm8731->regmap);
505 }
506
507
508 reg = snd_soc_read(codec, WM8731_PWR) & 0xff7f;
509 snd_soc_write(codec, WM8731_PWR, reg | 0x0040);
510 break;
511 case SND_SOC_BIAS_OFF:
512 snd_soc_write(codec, WM8731_PWR, 0xffff);
513 regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies),
514 wm8731->supplies);
515 regcache_mark_dirty(wm8731->regmap);
516 break;
517 }
518 codec->dapm.bias_level = level;
519 return 0;
520}
521
522static int wm8731_startup(struct snd_pcm_substream *substream,
523 struct snd_soc_dai *dai)
524{
525 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(dai->codec);
526
527 if (wm8731->constraints)
528 snd_pcm_hw_constraint_list(substream->runtime, 0,
529 SNDRV_PCM_HW_PARAM_RATE,
530 wm8731->constraints);
531
532 return 0;
533}
534
535#define WM8731_RATES SNDRV_PCM_RATE_8000_96000
536
537#define WM8731_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
538 SNDRV_PCM_FMTBIT_S24_LE)
539
540static const struct snd_soc_dai_ops wm8731_dai_ops = {
541 .startup = wm8731_startup,
542 .hw_params = wm8731_hw_params,
543 .digital_mute = wm8731_mute,
544 .set_sysclk = wm8731_set_dai_sysclk,
545 .set_fmt = wm8731_set_dai_fmt,
546};
547
548static struct snd_soc_dai_driver wm8731_dai = {
549 .name = "wm8731-hifi",
550 .playback = {
551 .stream_name = "Playback",
552 .channels_min = 1,
553 .channels_max = 2,
554 .rates = WM8731_RATES,
555 .formats = WM8731_FORMATS,},
556 .capture = {
557 .stream_name = "Capture",
558 .channels_min = 1,
559 .channels_max = 2,
560 .rates = WM8731_RATES,
561 .formats = WM8731_FORMATS,},
562 .ops = &wm8731_dai_ops,
563 .symmetric_rates = 1,
564};
565
566static int wm8731_probe(struct snd_soc_codec *codec)
567{
568 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
569 int ret = 0, i;
570
571 for (i = 0; i < ARRAY_SIZE(wm8731->supplies); i++)
572 wm8731->supplies[i].supply = wm8731_supply_names[i];
573
574 ret = devm_regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8731->supplies),
575 wm8731->supplies);
576 if (ret != 0) {
577 dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
578 return ret;
579 }
580
581 ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies),
582 wm8731->supplies);
583 if (ret != 0) {
584 dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
585 return ret;
586 }
587
588 ret = wm8731_reset(codec);
589 if (ret < 0) {
590 dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
591 goto err_regulator_enable;
592 }
593
594 wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
595
596
597 snd_soc_update_bits(codec, WM8731_LOUT1V, 0x100, 0);
598 snd_soc_update_bits(codec, WM8731_ROUT1V, 0x100, 0);
599 snd_soc_update_bits(codec, WM8731_LINVOL, 0x100, 0);
600 snd_soc_update_bits(codec, WM8731_RINVOL, 0x100, 0);
601
602
603 snd_soc_update_bits(codec, WM8731_APANA, 0x8, 0);
604
605
606 regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
607
608 return 0;
609
610err_regulator_enable:
611 regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
612
613 return ret;
614}
615
616
617static int wm8731_remove(struct snd_soc_codec *codec)
618{
619 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
620
621 regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
622
623 return 0;
624}
625
626static struct snd_soc_codec_driver soc_codec_dev_wm8731 = {
627 .probe = wm8731_probe,
628 .remove = wm8731_remove,
629 .set_bias_level = wm8731_set_bias_level,
630 .suspend_bias_off = true,
631
632 .dapm_widgets = wm8731_dapm_widgets,
633 .num_dapm_widgets = ARRAY_SIZE(wm8731_dapm_widgets),
634 .dapm_routes = wm8731_intercon,
635 .num_dapm_routes = ARRAY_SIZE(wm8731_intercon),
636 .controls = wm8731_snd_controls,
637 .num_controls = ARRAY_SIZE(wm8731_snd_controls),
638};
639
640static const struct of_device_id wm8731_of_match[] = {
641 { .compatible = "wlf,wm8731", },
642 { }
643};
644
645MODULE_DEVICE_TABLE(of, wm8731_of_match);
646
647static const struct regmap_config wm8731_regmap = {
648 .reg_bits = 7,
649 .val_bits = 9,
650
651 .max_register = WM8731_RESET,
652 .volatile_reg = wm8731_volatile,
653 .writeable_reg = wm8731_writeable,
654
655 .cache_type = REGCACHE_RBTREE,
656 .reg_defaults = wm8731_reg_defaults,
657 .num_reg_defaults = ARRAY_SIZE(wm8731_reg_defaults),
658};
659
660#if defined(CONFIG_SPI_MASTER)
661static int wm8731_spi_probe(struct spi_device *spi)
662{
663 struct wm8731_priv *wm8731;
664 int ret;
665
666 wm8731 = devm_kzalloc(&spi->dev, sizeof(*wm8731), GFP_KERNEL);
667 if (wm8731 == NULL)
668 return -ENOMEM;
669
670 mutex_init(&wm8731->lock);
671
672 wm8731->regmap = devm_regmap_init_spi(spi, &wm8731_regmap);
673 if (IS_ERR(wm8731->regmap)) {
674 ret = PTR_ERR(wm8731->regmap);
675 dev_err(&spi->dev, "Failed to allocate register map: %d\n",
676 ret);
677 return ret;
678 }
679
680 spi_set_drvdata(spi, wm8731);
681
682 ret = snd_soc_register_codec(&spi->dev,
683 &soc_codec_dev_wm8731, &wm8731_dai, 1);
684 if (ret != 0) {
685 dev_err(&spi->dev, "Failed to register CODEC: %d\n", ret);
686 return ret;
687 }
688
689 return 0;
690}
691
692static int wm8731_spi_remove(struct spi_device *spi)
693{
694 snd_soc_unregister_codec(&spi->dev);
695 return 0;
696}
697
698static struct spi_driver wm8731_spi_driver = {
699 .driver = {
700 .name = "wm8731",
701 .owner = THIS_MODULE,
702 .of_match_table = wm8731_of_match,
703 },
704 .probe = wm8731_spi_probe,
705 .remove = wm8731_spi_remove,
706};
707#endif
708
709#if IS_ENABLED(CONFIG_I2C)
710static int wm8731_i2c_probe(struct i2c_client *i2c,
711 const struct i2c_device_id *id)
712{
713 struct wm8731_priv *wm8731;
714 int ret;
715
716 wm8731 = devm_kzalloc(&i2c->dev, sizeof(struct wm8731_priv),
717 GFP_KERNEL);
718 if (wm8731 == NULL)
719 return -ENOMEM;
720
721 mutex_init(&wm8731->lock);
722
723 wm8731->regmap = devm_regmap_init_i2c(i2c, &wm8731_regmap);
724 if (IS_ERR(wm8731->regmap)) {
725 ret = PTR_ERR(wm8731->regmap);
726 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
727 ret);
728 return ret;
729 }
730
731 i2c_set_clientdata(i2c, wm8731);
732
733 ret = snd_soc_register_codec(&i2c->dev,
734 &soc_codec_dev_wm8731, &wm8731_dai, 1);
735 if (ret != 0) {
736 dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);
737 return ret;
738 }
739
740 return 0;
741}
742
743static int wm8731_i2c_remove(struct i2c_client *client)
744{
745 snd_soc_unregister_codec(&client->dev);
746 return 0;
747}
748
749static const struct i2c_device_id wm8731_i2c_id[] = {
750 { "wm8731", 0 },
751 { }
752};
753MODULE_DEVICE_TABLE(i2c, wm8731_i2c_id);
754
755static struct i2c_driver wm8731_i2c_driver = {
756 .driver = {
757 .name = "wm8731",
758 .owner = THIS_MODULE,
759 .of_match_table = wm8731_of_match,
760 },
761 .probe = wm8731_i2c_probe,
762 .remove = wm8731_i2c_remove,
763 .id_table = wm8731_i2c_id,
764};
765#endif
766
767static int __init wm8731_modinit(void)
768{
769 int ret = 0;
770#if IS_ENABLED(CONFIG_I2C)
771 ret = i2c_add_driver(&wm8731_i2c_driver);
772 if (ret != 0) {
773 printk(KERN_ERR "Failed to register WM8731 I2C driver: %d\n",
774 ret);
775 }
776#endif
777#if defined(CONFIG_SPI_MASTER)
778 ret = spi_register_driver(&wm8731_spi_driver);
779 if (ret != 0) {
780 printk(KERN_ERR "Failed to register WM8731 SPI driver: %d\n",
781 ret);
782 }
783#endif
784 return ret;
785}
786module_init(wm8731_modinit);
787
788static void __exit wm8731_exit(void)
789{
790#if IS_ENABLED(CONFIG_I2C)
791 i2c_del_driver(&wm8731_i2c_driver);
792#endif
793#if defined(CONFIG_SPI_MASTER)
794 spi_unregister_driver(&wm8731_spi_driver);
795#endif
796}
797module_exit(wm8731_exit);
798
799MODULE_DESCRIPTION("ASoC WM8731 driver");
800MODULE_AUTHOR("Richard Purdie");
801MODULE_LICENSE("GPL");
802
