]> git.karo-electronics.de Git - mv-sheeva.git/blob - sound/soc/codecs/wm8776.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
[mv-sheeva.git] / sound / soc / codecs / wm8776.c
1 /*
2  * wm8776.c  --  WM8776 ALSA SoC Audio driver
3  *
4  * Copyright 2009 Wolfson Microelectronics plc
5  *
6  * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License version 2 as
10  * published by the Free Software Foundation.
11  *
12  * TODO: Input ALC/limiter support
13  */
14
15 #include <linux/module.h>
16 #include <linux/moduleparam.h>
17 #include <linux/init.h>
18 #include <linux/delay.h>
19 #include <linux/pm.h>
20 #include <linux/i2c.h>
21 #include <linux/platform_device.h>
22 #include <linux/spi/spi.h>
23 #include <linux/slab.h>
24 #include <sound/core.h>
25 #include <sound/pcm.h>
26 #include <sound/pcm_params.h>
27 #include <sound/soc.h>
28 #include <sound/soc-dapm.h>
29 #include <sound/initval.h>
30 #include <sound/tlv.h>
31
32 #include "wm8776.h"
33
34 static struct snd_soc_codec *wm8776_codec;
35 struct snd_soc_codec_device soc_codec_dev_wm8776;
36
37 /* codec private data */
38 struct wm8776_priv {
39         struct snd_soc_codec codec;
40         u16 reg_cache[WM8776_CACHEREGNUM];
41         int sysclk[2];
42 };
43
44 #ifdef CONFIG_SPI_MASTER
45 static int wm8776_spi_write(struct spi_device *spi, const char *data, int len);
46 #endif
47
48 static const u16 wm8776_reg[WM8776_CACHEREGNUM] = {
49         0x79, 0x79, 0x79, 0xff, 0xff,  /* 4 */
50         0xff, 0x00, 0x90, 0x00, 0x00,  /* 9 */
51         0x22, 0x22, 0x22, 0x08, 0xcf,  /* 14 */
52         0xcf, 0x7b, 0x00, 0x32, 0x00,  /* 19 */
53         0xa6, 0x01, 0x01
54 };
55
56 static int wm8776_reset(struct snd_soc_codec *codec)
57 {
58         return snd_soc_write(codec, WM8776_RESET, 0);
59 }
60
61 static const DECLARE_TLV_DB_SCALE(hp_tlv, -12100, 100, 1);
62 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
63 static const DECLARE_TLV_DB_SCALE(adc_tlv, -10350, 50, 1);
64
65 static const struct snd_kcontrol_new wm8776_snd_controls[] = {
66 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8776_HPLVOL, WM8776_HPRVOL,
67                  0, 127, 0, hp_tlv),
68 SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8776_DACLVOL, WM8776_DACRVOL,
69                  0, 255, 0, dac_tlv),
70 SOC_SINGLE("Digital Playback ZC Switch", WM8776_DACCTRL1, 0, 1, 0),
71
72 SOC_SINGLE("Deemphasis Switch", WM8776_DACCTRL2, 0, 1, 0),
73
74 SOC_DOUBLE_R_TLV("Capture Volume", WM8776_ADCLVOL, WM8776_ADCRVOL,
75                  0, 255, 0, adc_tlv),
76 SOC_DOUBLE("Capture Switch", WM8776_ADCMUX, 7, 6, 1, 1),
77 SOC_DOUBLE_R("Capture ZC Switch", WM8776_ADCLVOL, WM8776_ADCRVOL, 8, 1, 0),
78 SOC_SINGLE("Capture HPF Switch", WM8776_ADCIFCTRL, 8, 1, 1),
79 };
80
81 static const struct snd_kcontrol_new inmix_controls[] = {
82 SOC_DAPM_SINGLE("AIN1 Switch", WM8776_ADCMUX, 0, 1, 0),
83 SOC_DAPM_SINGLE("AIN2 Switch", WM8776_ADCMUX, 1, 1, 0),
84 SOC_DAPM_SINGLE("AIN3 Switch", WM8776_ADCMUX, 2, 1, 0),
85 SOC_DAPM_SINGLE("AIN4 Switch", WM8776_ADCMUX, 3, 1, 0),
86 SOC_DAPM_SINGLE("AIN5 Switch", WM8776_ADCMUX, 4, 1, 0),
87 };
88
89 static const struct snd_kcontrol_new outmix_controls[] = {
90 SOC_DAPM_SINGLE("DAC Switch", WM8776_OUTMUX, 0, 1, 0),
91 SOC_DAPM_SINGLE("AUX Switch", WM8776_OUTMUX, 1, 1, 0),
92 SOC_DAPM_SINGLE("Bypass Switch", WM8776_OUTMUX, 2, 1, 0),
93 };
94
95 static const struct snd_soc_dapm_widget wm8776_dapm_widgets[] = {
96 SND_SOC_DAPM_INPUT("AUX"),
97 SND_SOC_DAPM_INPUT("AUX"),
98
99 SND_SOC_DAPM_INPUT("AIN1"),
100 SND_SOC_DAPM_INPUT("AIN2"),
101 SND_SOC_DAPM_INPUT("AIN3"),
102 SND_SOC_DAPM_INPUT("AIN4"),
103 SND_SOC_DAPM_INPUT("AIN5"),
104
105 SND_SOC_DAPM_MIXER("Input Mixer", WM8776_PWRDOWN, 6, 1,
106                    inmix_controls, ARRAY_SIZE(inmix_controls)),
107
108 SND_SOC_DAPM_ADC("ADC", "Capture", WM8776_PWRDOWN, 1, 1),
109 SND_SOC_DAPM_DAC("DAC", "Playback", WM8776_PWRDOWN, 2, 1),
110
111 SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0,
112                    outmix_controls, ARRAY_SIZE(outmix_controls)),
113
114 SND_SOC_DAPM_PGA("Headphone PGA", WM8776_PWRDOWN, 3, 1, NULL, 0),
115
116 SND_SOC_DAPM_OUTPUT("VOUT"),
117
118 SND_SOC_DAPM_OUTPUT("HPOUTL"),
119 SND_SOC_DAPM_OUTPUT("HPOUTR"),
120 };
121
122 static const struct snd_soc_dapm_route routes[] = {
123         { "Input Mixer", "AIN1 Switch", "AIN1" },
124         { "Input Mixer", "AIN2 Switch", "AIN2" },
125         { "Input Mixer", "AIN3 Switch", "AIN3" },
126         { "Input Mixer", "AIN4 Switch", "AIN4" },
127         { "Input Mixer", "AIN5 Switch", "AIN5" },
128
129         { "ADC", NULL, "Input Mixer" },
130
131         { "Output Mixer", "DAC Switch", "DAC" },
132         { "Output Mixer", "AUX Switch", "AUX" },
133         { "Output Mixer", "Bypass Switch", "Input Mixer" },
134
135         { "VOUT", NULL, "Output Mixer" },
136
137         { "Headphone PGA", NULL, "Output Mixer" },
138
139         { "HPOUTL", NULL, "Headphone PGA" },
140         { "HPOUTR", NULL, "Headphone PGA" },
141 };
142
143 static int wm8776_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
144 {
145         struct snd_soc_codec *codec = dai->codec;
146         int reg, iface, master;
147
148         switch (dai->id) {
149         case WM8776_DAI_DAC:
150                 reg = WM8776_DACIFCTRL;
151                 master = 0x80;
152                 break;
153         case WM8776_DAI_ADC:
154                 reg = WM8776_ADCIFCTRL;
155                 master = 0x100;
156                 break;
157         default:
158                 return -EINVAL;
159         }
160
161         iface = 0;
162
163         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
164         case SND_SOC_DAIFMT_CBM_CFM:
165                 break;
166         case SND_SOC_DAIFMT_CBS_CFS:
167                 master = 0;
168                 break;
169         default:
170                 return -EINVAL;
171         }
172
173         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
174         case SND_SOC_DAIFMT_I2S:
175                 iface |= 0x0002;
176                 break;
177         case SND_SOC_DAIFMT_RIGHT_J:
178                 break;
179         case SND_SOC_DAIFMT_LEFT_J:
180                 iface |= 0x0001;
181                 break;
182                 /* FIXME: CHECK A/B */
183         case SND_SOC_DAIFMT_DSP_A:
184                 iface |= 0x0003;
185                 break;
186         case SND_SOC_DAIFMT_DSP_B:
187                 iface |= 0x0007;
188                 break;
189         default:
190                 return -EINVAL;
191         }
192
193         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
194         case SND_SOC_DAIFMT_NB_NF:
195                 break;
196         case SND_SOC_DAIFMT_IB_IF:
197                 iface |= 0x00c;
198                 break;
199         case SND_SOC_DAIFMT_IB_NF:
200                 iface |= 0x008;
201                 break;
202         case SND_SOC_DAIFMT_NB_IF:
203                 iface |= 0x004;
204                 break;
205         default:
206                 return -EINVAL;
207         }
208
209         /* Finally, write out the values */
210         snd_soc_update_bits(codec, reg, 0xf, iface);
211         snd_soc_update_bits(codec, WM8776_MSTRCTRL, 0x180, master);
212
213         return 0;
214 }
215
216 static int mclk_ratios[] = {
217         128,
218         192,
219         256,
220         384,
221         512,
222         768,
223 };
224
225 static int wm8776_hw_params(struct snd_pcm_substream *substream,
226                             struct snd_pcm_hw_params *params,
227                             struct snd_soc_dai *dai)
228 {
229         struct snd_soc_codec *codec = dai->codec;
230         struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec);
231         int iface_reg, iface;
232         int ratio_shift, master;
233         int i;
234
235         iface = 0;
236
237         switch (dai->id) {
238         case WM8776_DAI_DAC:
239                 iface_reg = WM8776_DACIFCTRL;
240                 master = 0x80;
241                 ratio_shift = 4;
242                 break;
243         case WM8776_DAI_ADC:
244                 iface_reg = WM8776_ADCIFCTRL;
245                 master = 0x100;
246                 ratio_shift = 0;
247                 break;
248         default:
249                 return -EINVAL;
250         }
251
252
253         /* Set word length */
254         switch (params_format(params)) {
255         case SNDRV_PCM_FORMAT_S16_LE:
256                 break;
257         case SNDRV_PCM_FORMAT_S20_3LE:
258                 iface |= 0x10;
259                 break;
260         case SNDRV_PCM_FORMAT_S24_LE:
261                 iface |= 0x20;
262                 break;
263         case SNDRV_PCM_FORMAT_S32_LE:
264                 iface |= 0x30;
265                 break;
266         }
267
268         /* Only need to set MCLK/LRCLK ratio if we're master */
269         if (snd_soc_read(codec, WM8776_MSTRCTRL) & master) {
270                 for (i = 0; i < ARRAY_SIZE(mclk_ratios); i++) {
271                         if (wm8776->sysclk[dai->id] / params_rate(params)
272                             == mclk_ratios[i])
273                                 break;
274                 }
275
276                 if (i == ARRAY_SIZE(mclk_ratios)) {
277                         dev_err(codec->dev,
278                                 "Unable to configure MCLK ratio %d/%d\n",
279                                 wm8776->sysclk[dai->id], params_rate(params));
280                         return -EINVAL;
281                 }
282
283                 dev_dbg(codec->dev, "MCLK is %dfs\n", mclk_ratios[i]);
284
285                 snd_soc_update_bits(codec, WM8776_MSTRCTRL,
286                                     0x7 << ratio_shift, i << ratio_shift);
287         } else {
288                 dev_dbg(codec->dev, "DAI in slave mode\n");
289         }
290
291         snd_soc_update_bits(codec, iface_reg, 0x30, iface);
292
293         return 0;
294 }
295
296 static int wm8776_mute(struct snd_soc_dai *dai, int mute)
297 {
298         struct snd_soc_codec *codec = dai->codec;
299
300         return snd_soc_write(codec, WM8776_DACMUTE, !!mute);
301 }
302
303 static int wm8776_set_sysclk(struct snd_soc_dai *dai,
304                              int clk_id, unsigned int freq, int dir)
305 {
306         struct snd_soc_codec *codec = dai->codec;
307         struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec);
308
309         BUG_ON(dai->id >= ARRAY_SIZE(wm8776->sysclk));
310
311         wm8776->sysclk[dai->id] = freq;
312
313         return 0;
314 }
315
316 static int wm8776_set_bias_level(struct snd_soc_codec *codec,
317                                  enum snd_soc_bias_level level)
318 {
319         switch (level) {
320         case SND_SOC_BIAS_ON:
321                 break;
322         case SND_SOC_BIAS_PREPARE:
323                 break;
324         case SND_SOC_BIAS_STANDBY:
325                 if (codec->bias_level == SND_SOC_BIAS_OFF) {
326                         /* Disable the global powerdown; DAPM does the rest */
327                         snd_soc_update_bits(codec, WM8776_PWRDOWN, 1, 0);
328                 }
329
330                 break;
331         case SND_SOC_BIAS_OFF:
332                 snd_soc_update_bits(codec, WM8776_PWRDOWN, 1, 1);
333                 break;
334         }
335
336         codec->bias_level = level;
337         return 0;
338 }
339
340 #define WM8776_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
341                       SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
342                       SNDRV_PCM_RATE_96000)
343
344
345 #define WM8776_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
346                         SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
347
348 static struct snd_soc_dai_ops wm8776_dac_ops = {
349         .digital_mute   = wm8776_mute,
350         .hw_params      = wm8776_hw_params,
351         .set_fmt        = wm8776_set_fmt,
352         .set_sysclk     = wm8776_set_sysclk,
353 };
354
355 static struct snd_soc_dai_ops wm8776_adc_ops = {
356         .hw_params      = wm8776_hw_params,
357         .set_fmt        = wm8776_set_fmt,
358         .set_sysclk     = wm8776_set_sysclk,
359 };
360
361 struct snd_soc_dai wm8776_dai[] = {
362         {
363                 .name = "WM8776 Playback",
364                 .id = WM8776_DAI_DAC,
365                 .playback = {
366                         .stream_name = "Playback",
367                         .channels_min = 2,
368                         .channels_max = 2,
369                         .rates = WM8776_RATES,
370                         .formats = WM8776_FORMATS,
371                 },
372                 .ops = &wm8776_dac_ops,
373         },
374         {
375                 .name = "WM8776 Capture",
376                 .id = WM8776_DAI_ADC,
377                 .capture = {
378                         .stream_name = "Capture",
379                         .channels_min = 2,
380                         .channels_max = 2,
381                         .rates = WM8776_RATES,
382                         .formats = WM8776_FORMATS,
383                 },
384                 .ops = &wm8776_adc_ops,
385         },
386 };
387 EXPORT_SYMBOL_GPL(wm8776_dai);
388
389 #ifdef CONFIG_PM
390 static int wm8776_suspend(struct platform_device *pdev, pm_message_t state)
391 {
392         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
393         struct snd_soc_codec *codec = socdev->card->codec;
394
395         wm8776_set_bias_level(codec, SND_SOC_BIAS_OFF);
396
397         return 0;
398 }
399
400 static int wm8776_resume(struct platform_device *pdev)
401 {
402         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
403         struct snd_soc_codec *codec = socdev->card->codec;
404         int i;
405         u8 data[2];
406         u16 *cache = codec->reg_cache;
407
408         /* Sync reg_cache with the hardware */
409         for (i = 0; i < ARRAY_SIZE(wm8776_reg); i++) {
410                 if (cache[i] == wm8776_reg[i])
411                         continue;
412                 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
413                 data[1] = cache[i] & 0x00ff;
414                 codec->hw_write(codec->control_data, data, 2);
415         }
416
417         wm8776_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
418
419         return 0;
420 }
421 #else
422 #define wm8776_suspend NULL
423 #define wm8776_resume NULL
424 #endif
425
426 static int wm8776_probe(struct platform_device *pdev)
427 {
428         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
429         struct snd_soc_codec *codec;
430         int ret = 0;
431
432         if (wm8776_codec == NULL) {
433                 dev_err(&pdev->dev, "Codec device not registered\n");
434                 return -ENODEV;
435         }
436
437         socdev->card->codec = wm8776_codec;
438         codec = wm8776_codec;
439
440         /* register pcms */
441         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
442         if (ret < 0) {
443                 dev_err(codec->dev, "failed to create pcms: %d\n", ret);
444                 goto pcm_err;
445         }
446
447         snd_soc_add_controls(codec, wm8776_snd_controls,
448                              ARRAY_SIZE(wm8776_snd_controls));
449         snd_soc_dapm_new_controls(codec, wm8776_dapm_widgets,
450                                   ARRAY_SIZE(wm8776_dapm_widgets));
451         snd_soc_dapm_add_routes(codec, routes, ARRAY_SIZE(routes));
452
453         return ret;
454
455 pcm_err:
456         return ret;
457 }
458
459 /* power down chip */
460 static int wm8776_remove(struct platform_device *pdev)
461 {
462         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
463
464         snd_soc_free_pcms(socdev);
465         snd_soc_dapm_free(socdev);
466
467         return 0;
468 }
469
470 struct snd_soc_codec_device soc_codec_dev_wm8776 = {
471         .probe =        wm8776_probe,
472         .remove =       wm8776_remove,
473         .suspend =      wm8776_suspend,
474         .resume =       wm8776_resume,
475 };
476 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8776);
477
478 static int wm8776_register(struct wm8776_priv *wm8776,
479                            enum snd_soc_control_type control)
480 {
481         int ret, i;
482         struct snd_soc_codec *codec = &wm8776->codec;
483
484         if (wm8776_codec) {
485                 dev_err(codec->dev, "Another WM8776 is registered\n");
486                 ret = -EINVAL;
487                 goto err;
488         }
489
490         mutex_init(&codec->mutex);
491         INIT_LIST_HEAD(&codec->dapm_widgets);
492         INIT_LIST_HEAD(&codec->dapm_paths);
493
494         snd_soc_codec_set_drvdata(codec, wm8776);
495         codec->name = "WM8776";
496         codec->owner = THIS_MODULE;
497         codec->bias_level = SND_SOC_BIAS_OFF;
498         codec->set_bias_level = wm8776_set_bias_level;
499         codec->dai = wm8776_dai;
500         codec->num_dai = ARRAY_SIZE(wm8776_dai);
501         codec->reg_cache_size = WM8776_CACHEREGNUM;
502         codec->reg_cache = &wm8776->reg_cache;
503
504         memcpy(codec->reg_cache, wm8776_reg, sizeof(wm8776_reg));
505
506         ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
507         if (ret < 0) {
508                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
509                 goto err;
510         }
511
512         for (i = 0; i < ARRAY_SIZE(wm8776_dai); i++)
513                 wm8776_dai[i].dev = codec->dev;
514
515         ret = wm8776_reset(codec);
516         if (ret < 0) {
517                 dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
518                 goto err;
519         }
520
521         wm8776_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
522
523         /* Latch the update bits; right channel only since we always
524          * update both. */
525         snd_soc_update_bits(codec, WM8776_HPRVOL, 0x100, 0x100);
526         snd_soc_update_bits(codec, WM8776_DACRVOL, 0x100, 0x100);
527
528         wm8776_codec = codec;
529
530         ret = snd_soc_register_codec(codec);
531         if (ret != 0) {
532                 dev_err(codec->dev, "Failed to register codec: %d\n", ret);
533                 goto err;
534         }
535
536         ret = snd_soc_register_dais(wm8776_dai, ARRAY_SIZE(wm8776_dai));
537         if (ret != 0) {
538                 dev_err(codec->dev, "Failed to register DAIs: %d\n", ret);
539                 goto err_codec;
540         }
541
542         return 0;
543
544 err_codec:
545         snd_soc_unregister_codec(codec);
546 err:
547         kfree(wm8776);
548         return ret;
549 }
550
551 static void wm8776_unregister(struct wm8776_priv *wm8776)
552 {
553         wm8776_set_bias_level(&wm8776->codec, SND_SOC_BIAS_OFF);
554         snd_soc_unregister_dais(wm8776_dai, ARRAY_SIZE(wm8776_dai));
555         snd_soc_unregister_codec(&wm8776->codec);
556         kfree(wm8776);
557         wm8776_codec = NULL;
558 }
559
560 #if defined(CONFIG_SPI_MASTER)
561 static int wm8776_spi_write(struct spi_device *spi, const char *data, int len)
562 {
563         struct spi_transfer t;
564         struct spi_message m;
565         u8 msg[2];
566
567         if (len <= 0)
568                 return 0;
569
570         msg[0] = data[0];
571         msg[1] = data[1];
572
573         spi_message_init(&m);
574         memset(&t, 0, (sizeof t));
575
576         t.tx_buf = &msg[0];
577         t.len = len;
578
579         spi_message_add_tail(&t, &m);
580         spi_sync(spi, &m);
581
582         return len;
583 }
584
585 static int __devinit wm8776_spi_probe(struct spi_device *spi)
586 {
587         struct snd_soc_codec *codec;
588         struct wm8776_priv *wm8776;
589
590         wm8776 = kzalloc(sizeof(struct wm8776_priv), GFP_KERNEL);
591         if (wm8776 == NULL)
592                 return -ENOMEM;
593
594         codec = &wm8776->codec;
595         codec->control_data = spi;
596         codec->hw_write = (hw_write_t)wm8776_spi_write;
597         codec->dev = &spi->dev;
598
599         dev_set_drvdata(&spi->dev, wm8776);
600
601         return wm8776_register(wm8776, SND_SOC_SPI);
602 }
603
604 static int __devexit wm8776_spi_remove(struct spi_device *spi)
605 {
606         struct wm8776_priv *wm8776 = dev_get_drvdata(&spi->dev);
607
608         wm8776_unregister(wm8776);
609
610         return 0;
611 }
612
613 static struct spi_driver wm8776_spi_driver = {
614         .driver = {
615                 .name   = "wm8776",
616                 .bus    = &spi_bus_type,
617                 .owner  = THIS_MODULE,
618         },
619         .probe          = wm8776_spi_probe,
620         .remove         = __devexit_p(wm8776_spi_remove),
621 };
622 #endif /* CONFIG_SPI_MASTER */
623
624 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
625 static __devinit int wm8776_i2c_probe(struct i2c_client *i2c,
626                                       const struct i2c_device_id *id)
627 {
628         struct wm8776_priv *wm8776;
629         struct snd_soc_codec *codec;
630
631         wm8776 = kzalloc(sizeof(struct wm8776_priv), GFP_KERNEL);
632         if (wm8776 == NULL)
633                 return -ENOMEM;
634
635         codec = &wm8776->codec;
636         codec->hw_write = (hw_write_t)i2c_master_send;
637
638         i2c_set_clientdata(i2c, wm8776);
639         codec->control_data = i2c;
640
641         codec->dev = &i2c->dev;
642
643         return wm8776_register(wm8776, SND_SOC_I2C);
644 }
645
646 static __devexit int wm8776_i2c_remove(struct i2c_client *client)
647 {
648         struct wm8776_priv *wm8776 = i2c_get_clientdata(client);
649         wm8776_unregister(wm8776);
650         return 0;
651 }
652
653 static const struct i2c_device_id wm8776_i2c_id[] = {
654         { "wm8776", 0 },
655         { }
656 };
657 MODULE_DEVICE_TABLE(i2c, wm8776_i2c_id);
658
659 static struct i2c_driver wm8776_i2c_driver = {
660         .driver = {
661                 .name = "wm8776",
662                 .owner = THIS_MODULE,
663         },
664         .probe =    wm8776_i2c_probe,
665         .remove =   __devexit_p(wm8776_i2c_remove),
666         .id_table = wm8776_i2c_id,
667 };
668 #endif
669
670 static int __init wm8776_modinit(void)
671 {
672         int ret;
673 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
674         ret = i2c_add_driver(&wm8776_i2c_driver);
675         if (ret != 0) {
676                 printk(KERN_ERR "Failed to register WM8776 I2C driver: %d\n",
677                        ret);
678         }
679 #endif
680 #if defined(CONFIG_SPI_MASTER)
681         ret = spi_register_driver(&wm8776_spi_driver);
682         if (ret != 0) {
683                 printk(KERN_ERR "Failed to register WM8776 SPI driver: %d\n",
684                        ret);
685         }
686 #endif
687         return 0;
688 }
689 module_init(wm8776_modinit);
690
691 static void __exit wm8776_exit(void)
692 {
693 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
694         i2c_del_driver(&wm8776_i2c_driver);
695 #endif
696 #if defined(CONFIG_SPI_MASTER)
697         spi_unregister_driver(&wm8776_spi_driver);
698 #endif
699 }
700 module_exit(wm8776_exit);
701
702 MODULE_DESCRIPTION("ASoC WM8776 driver");
703 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
704 MODULE_LICENSE("GPL");