ASoC: Decouple DAPM from CODECs
[linux-2.6.git] / sound / soc / codecs / da7210.c
1 /*
2  * DA7210 ALSA Soc codec driver
3  *
4  * Copyright (c) 2009 Dialog Semiconductor
5  * Written by David Chen <Dajun.chen@diasemi.com>
6  *
7  * Copyright (C) 2009 Renesas Solutions Corp.
8  * Cleanups by Kuninori Morimoto <morimoto.kuninori@renesas.com>
9  *
10  * Tested on SuperH Ecovec24 board with S16/S24 LE in 48KHz using I2S
11  *
12  * This program is free software; you can redistribute  it and/or modify it
13  * under  the terms of  the GNU General  Public License as published by the
14  * Free Software Foundation;  either version 2 of the  License, or (at your
15  * option) any later version.
16  */
17
18 #include <linux/delay.h>
19 #include <linux/i2c.h>
20 #include <linux/platform_device.h>
21 #include <linux/slab.h>
22 #include <sound/pcm.h>
23 #include <sound/pcm_params.h>
24 #include <sound/soc.h>
25 #include <sound/initval.h>
26 #include <sound/tlv.h>
27
28 /* DA7210 register space */
29 #define DA7210_STATUS                   0x02
30 #define DA7210_STARTUP1                 0x03
31 #define DA7210_MIC_L                    0x07
32 #define DA7210_MIC_R                    0x08
33 #define DA7210_INMIX_L                  0x0D
34 #define DA7210_INMIX_R                  0x0E
35 #define DA7210_ADC_HPF                  0x0F
36 #define DA7210_ADC                      0x10
37 #define DA7210_DAC_HPF                  0x14
38 #define DA7210_DAC_L                    0x15
39 #define DA7210_DAC_R                    0x16
40 #define DA7210_DAC_SEL                  0x17
41 #define DA7210_OUTMIX_L                 0x1C
42 #define DA7210_OUTMIX_R                 0x1D
43 #define DA7210_HP_L_VOL                 0x21
44 #define DA7210_HP_R_VOL                 0x22
45 #define DA7210_HP_CFG                   0x23
46 #define DA7210_DAI_SRC_SEL              0x25
47 #define DA7210_DAI_CFG1                 0x26
48 #define DA7210_DAI_CFG3                 0x28
49 #define DA7210_PLL_DIV1                 0x29
50 #define DA7210_PLL_DIV2                 0x2A
51 #define DA7210_PLL_DIV3                 0x2B
52 #define DA7210_PLL                      0x2C
53 #define DA7210_A_HID_UNLOCK             0x8A
54 #define DA7210_A_TEST_UNLOCK            0x8B
55 #define DA7210_A_PLL1                   0x90
56 #define DA7210_A_CP_MODE                0xA7
57
58 /* STARTUP1 bit fields */
59 #define DA7210_SC_MST_EN                (1 << 0)
60
61 /* MIC_L bit fields */
62 #define DA7210_MICBIAS_EN               (1 << 6)
63 #define DA7210_MIC_L_EN                 (1 << 7)
64
65 /* MIC_R bit fields */
66 #define DA7210_MIC_R_EN                 (1 << 7)
67
68 /* INMIX_L bit fields */
69 #define DA7210_IN_L_EN                  (1 << 7)
70
71 /* INMIX_R bit fields */
72 #define DA7210_IN_R_EN                  (1 << 7)
73
74 /* ADC bit fields */
75 #define DA7210_ADC_L_EN                 (1 << 3)
76 #define DA7210_ADC_R_EN                 (1 << 7)
77
78 /* DAC/ADC HPF fields */
79 #define DA7210_VOICE_F0_MASK            (0x7 << 4)
80 #define DA7210_VOICE_F0_25              (1 << 4)
81 #define DA7210_VOICE_EN                 (1 << 7)
82
83 /* DAC_SEL bit fields */
84 #define DA7210_DAC_L_SRC_DAI_L          (4 << 0)
85 #define DA7210_DAC_L_EN                 (1 << 3)
86 #define DA7210_DAC_R_SRC_DAI_R          (5 << 4)
87 #define DA7210_DAC_R_EN                 (1 << 7)
88
89 /* OUTMIX_L bit fields */
90 #define DA7210_OUT_L_EN                 (1 << 7)
91
92 /* OUTMIX_R bit fields */
93 #define DA7210_OUT_R_EN                 (1 << 7)
94
95 /* HP_CFG bit fields */
96 #define DA7210_HP_2CAP_MODE             (1 << 1)
97 #define DA7210_HP_SENSE_EN              (1 << 2)
98 #define DA7210_HP_L_EN                  (1 << 3)
99 #define DA7210_HP_MODE                  (1 << 6)
100 #define DA7210_HP_R_EN                  (1 << 7)
101
102 /* DAI_SRC_SEL bit fields */
103 #define DA7210_DAI_OUT_L_SRC            (6 << 0)
104 #define DA7210_DAI_OUT_R_SRC            (7 << 4)
105
106 /* DAI_CFG1 bit fields */
107 #define DA7210_DAI_WORD_S16_LE          (0 << 0)
108 #define DA7210_DAI_WORD_S24_LE          (2 << 0)
109 #define DA7210_DAI_FLEN_64BIT           (1 << 2)
110 #define DA7210_DAI_MODE_MASTER          (1 << 7)
111
112 /* DAI_CFG3 bit fields */
113 #define DA7210_DAI_FORMAT_I2SMODE       (0 << 0)
114 #define DA7210_DAI_OE                   (1 << 3)
115 #define DA7210_DAI_EN                   (1 << 7)
116
117 /*PLL_DIV3 bit fields */
118 #define DA7210_MCLK_RANGE_10_20_MHZ     (1 << 4)
119 #define DA7210_PLL_BYP                  (1 << 6)
120
121 /* PLL bit fields */
122 #define DA7210_PLL_FS_MASK              (0xF << 0)
123 #define DA7210_PLL_FS_8000              (0x1 << 0)
124 #define DA7210_PLL_FS_11025             (0x2 << 0)
125 #define DA7210_PLL_FS_12000             (0x3 << 0)
126 #define DA7210_PLL_FS_16000             (0x5 << 0)
127 #define DA7210_PLL_FS_22050             (0x6 << 0)
128 #define DA7210_PLL_FS_24000             (0x7 << 0)
129 #define DA7210_PLL_FS_32000             (0x9 << 0)
130 #define DA7210_PLL_FS_44100             (0xA << 0)
131 #define DA7210_PLL_FS_48000             (0xB << 0)
132 #define DA7210_PLL_FS_88200             (0xE << 0)
133 #define DA7210_PLL_FS_96000             (0xF << 0)
134 #define DA7210_PLL_EN                   (0x1 << 7)
135
136 #define DA7210_VERSION "0.0.1"
137
138 /*
139  * Playback Volume
140  *
141  * max          : 0x3F (+15.0 dB)
142  *                 (1.5 dB step)
143  * min          : 0x11 (-54.0 dB)
144  * mute         : 0x10
145  * reserved     : 0x00 - 0x0F
146  *
147  * ** FIXME **
148  *
149  * Reserved area are considered as "mute".
150  * -> min = -79.5 dB
151  */
152 static const DECLARE_TLV_DB_SCALE(hp_out_tlv, -7950, 150, 1);
153
154 static const struct snd_kcontrol_new da7210_snd_controls[] = {
155
156         SOC_DOUBLE_R_TLV("HeadPhone Playback Volume",
157                          DA7210_HP_L_VOL, DA7210_HP_R_VOL,
158                          0, 0x3F, 0, hp_out_tlv),
159 };
160
161 /* Codec private data */
162 struct da7210_priv {
163         enum snd_soc_control_type control_type;
164         void *control_data;
165 };
166
167 /*
168  * Register cache
169  */
170 static const u8 da7210_reg[] = {
171         0x00, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R0  - R7  */
172         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, /* R8  - RF  */
173         0x00, 0x00, 0x00, 0x00, 0x08, 0x10, 0x10, 0x54, /* R10 - R17 */
174         0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R18 - R1F */
175         0x00, 0x00, 0x00, 0x02, 0x00, 0x76, 0x00, 0x00, /* R20 - R27 */
176         0x04, 0x00, 0x00, 0x30, 0x2A, 0x00, 0x40, 0x00, /* R28 - R2F */
177         0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, /* R30 - R37 */
178         0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x00, 0x00, /* R38 - R3F */
179         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R40 - R4F */
180         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R48 - R4F */
181         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R50 - R57 */
182         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R58 - R5F */
183         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R60 - R67 */
184         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R68 - R6F */
185         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R70 - R77 */
186         0x00, 0x00, 0x00, 0x00, 0x00, 0x54, 0x54, 0x00, /* R78 - R7F */
187         0x00, 0x00, 0x2C, 0x00, 0x00, 0x00, 0x00, 0x00, /* R80 - R87 */
188         0x00,                                           /* R88       */
189 };
190
191 /*
192  * Read da7210 register cache
193  */
194 static inline u32 da7210_read_reg_cache(struct snd_soc_codec *codec, u32 reg)
195 {
196         u8 *cache = codec->reg_cache;
197         BUG_ON(reg >= ARRAY_SIZE(da7210_reg));
198         return cache[reg];
199 }
200
201 /*
202  * Write to the da7210 register space
203  */
204 static int da7210_write(struct snd_soc_codec *codec, u32 reg, u32 value)
205 {
206         u8 *cache = codec->reg_cache;
207         u8 data[2];
208
209         BUG_ON(codec->driver->volatile_register);
210
211         data[0] = reg & 0xff;
212         data[1] = value & 0xff;
213
214         if (reg >= codec->driver->reg_cache_size)
215                 return -EIO;
216
217         if (2 != codec->hw_write(codec->control_data, data, 2))
218                 return -EIO;
219
220         cache[reg] = value;
221         return 0;
222 }
223
224 /*
225  * Read from the da7210 register space.
226  */
227 static inline u32 da7210_read(struct snd_soc_codec *codec, u32 reg)
228 {
229         if (DA7210_STATUS == reg)
230                 return i2c_smbus_read_byte_data(codec->control_data, reg);
231
232         return da7210_read_reg_cache(codec, reg);
233 }
234
235 static int da7210_startup(struct snd_pcm_substream *substream,
236                           struct snd_soc_dai *dai)
237 {
238         int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
239         struct snd_soc_codec *codec = dai->codec;
240
241         if (is_play) {
242                 /* Enable Out */
243                 snd_soc_update_bits(codec, DA7210_OUTMIX_L, 0x1F, 0x10);
244                 snd_soc_update_bits(codec, DA7210_OUTMIX_R, 0x1F, 0x10);
245
246         } else {
247                 /* Volume 7 */
248                 snd_soc_update_bits(codec, DA7210_MIC_L, 0x7, 0x7);
249                 snd_soc_update_bits(codec, DA7210_MIC_R, 0x7, 0x7);
250
251                 /* Enable Mic */
252                 snd_soc_update_bits(codec, DA7210_INMIX_L, 0x1F, 0x1);
253                 snd_soc_update_bits(codec, DA7210_INMIX_R, 0x1F, 0x1);
254         }
255
256         return 0;
257 }
258
259 /*
260  * Set PCM DAI word length.
261  */
262 static int da7210_hw_params(struct snd_pcm_substream *substream,
263                             struct snd_pcm_hw_params *params,
264                             struct snd_soc_dai *dai)
265 {
266         struct snd_soc_pcm_runtime *rtd = substream->private_data;
267         struct snd_soc_codec *codec = rtd->codec;
268         u32 dai_cfg1;
269         u32 hpf_reg, hpf_mask, hpf_value;
270         u32 fs, bypass;
271
272         /* set DAI source to Left and Right ADC */
273         da7210_write(codec, DA7210_DAI_SRC_SEL,
274                      DA7210_DAI_OUT_R_SRC | DA7210_DAI_OUT_L_SRC);
275
276         /* Enable DAI */
277         da7210_write(codec, DA7210_DAI_CFG3, DA7210_DAI_OE | DA7210_DAI_EN);
278
279         dai_cfg1 = 0xFC & da7210_read(codec, DA7210_DAI_CFG1);
280
281         switch (params_format(params)) {
282         case SNDRV_PCM_FORMAT_S16_LE:
283                 dai_cfg1 |= DA7210_DAI_WORD_S16_LE;
284                 break;
285         case SNDRV_PCM_FORMAT_S24_LE:
286                 dai_cfg1 |= DA7210_DAI_WORD_S24_LE;
287                 break;
288         default:
289                 return -EINVAL;
290         }
291
292         da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);
293
294         hpf_reg = (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) ?
295                 DA7210_DAC_HPF : DA7210_ADC_HPF;
296
297         switch (params_rate(params)) {
298         case 8000:
299                 fs              = DA7210_PLL_FS_8000;
300                 hpf_mask        = DA7210_VOICE_F0_MASK  | DA7210_VOICE_EN;
301                 hpf_value       = DA7210_VOICE_F0_25    | DA7210_VOICE_EN;
302                 bypass          = DA7210_PLL_BYP;
303                 break;
304         case 11025:
305                 fs              = DA7210_PLL_FS_11025;
306                 hpf_mask        = DA7210_VOICE_F0_MASK  | DA7210_VOICE_EN;
307                 hpf_value       = DA7210_VOICE_F0_25    | DA7210_VOICE_EN;
308                 bypass          = 0;
309                 break;
310         case 12000:
311                 fs              = DA7210_PLL_FS_12000;
312                 hpf_mask        = DA7210_VOICE_F0_MASK  | DA7210_VOICE_EN;
313                 hpf_value       = DA7210_VOICE_F0_25    | DA7210_VOICE_EN;
314                 bypass          = DA7210_PLL_BYP;
315                 break;
316         case 16000:
317                 fs              = DA7210_PLL_FS_16000;
318                 hpf_mask        = DA7210_VOICE_F0_MASK  | DA7210_VOICE_EN;
319                 hpf_value       = DA7210_VOICE_F0_25    | DA7210_VOICE_EN;
320                 bypass          = DA7210_PLL_BYP;
321                 break;
322         case 22050:
323                 fs              = DA7210_PLL_FS_22050;
324                 hpf_mask        = DA7210_VOICE_EN;
325                 hpf_value       = 0;
326                 bypass          = 0;
327                 break;
328         case 32000:
329                 fs              = DA7210_PLL_FS_32000;
330                 hpf_mask        = DA7210_VOICE_EN;
331                 hpf_value       = 0;
332                 bypass          = DA7210_PLL_BYP;
333                 break;
334         case 44100:
335                 fs              = DA7210_PLL_FS_44100;
336                 hpf_mask        = DA7210_VOICE_EN;
337                 hpf_value       = 0;
338                 bypass          = 0;
339                 break;
340         case 48000:
341                 fs              = DA7210_PLL_FS_48000;
342                 hpf_mask        = DA7210_VOICE_EN;
343                 hpf_value       = 0;
344                 bypass          = DA7210_PLL_BYP;
345                 break;
346         case 88200:
347                 fs              = DA7210_PLL_FS_88200;
348                 hpf_mask        = DA7210_VOICE_EN;
349                 hpf_value       = 0;
350                 bypass          = 0;
351                 break;
352         case 96000:
353                 fs              = DA7210_PLL_FS_96000;
354                 hpf_mask        = DA7210_VOICE_EN;
355                 hpf_value       = 0;
356                 bypass          = DA7210_PLL_BYP;
357                 break;
358         default:
359                 return -EINVAL;
360         }
361
362         /* Disable active mode */
363         snd_soc_update_bits(codec, DA7210_STARTUP1, DA7210_SC_MST_EN, 0);
364
365         snd_soc_update_bits(codec, hpf_reg, hpf_mask, hpf_value);
366         snd_soc_update_bits(codec, DA7210_PLL, DA7210_PLL_FS_MASK, fs);
367         snd_soc_update_bits(codec, DA7210_PLL_DIV3, DA7210_PLL_BYP, bypass);
368
369         /* Enable active mode */
370         snd_soc_update_bits(codec, DA7210_STARTUP1,
371                             DA7210_SC_MST_EN, DA7210_SC_MST_EN);
372
373         return 0;
374 }
375
376 /*
377  * Set DAI mode and Format
378  */
379 static int da7210_set_dai_fmt(struct snd_soc_dai *codec_dai, u32 fmt)
380 {
381         struct snd_soc_codec *codec = codec_dai->codec;
382         u32 dai_cfg1;
383         u32 dai_cfg3;
384
385         dai_cfg1 = 0x7f & da7210_read(codec, DA7210_DAI_CFG1);
386         dai_cfg3 = 0xfc & da7210_read(codec, DA7210_DAI_CFG3);
387
388         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
389         case SND_SOC_DAIFMT_CBM_CFM:
390                 dai_cfg1 |= DA7210_DAI_MODE_MASTER;
391                 break;
392         default:
393                 return -EINVAL;
394         }
395
396         /* FIXME
397          *
398          * It support I2S only now
399          */
400         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
401         case SND_SOC_DAIFMT_I2S:
402                 dai_cfg3 |= DA7210_DAI_FORMAT_I2SMODE;
403                 break;
404         default:
405                 return -EINVAL;
406         }
407
408         /* FIXME
409          *
410          * It support 64bit data transmission only now
411          */
412         dai_cfg1 |= DA7210_DAI_FLEN_64BIT;
413
414         da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);
415         da7210_write(codec, DA7210_DAI_CFG3, dai_cfg3);
416
417         return 0;
418 }
419
420 #define DA7210_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE)
421
422 /* DAI operations */
423 static struct snd_soc_dai_ops da7210_dai_ops = {
424         .startup        = da7210_startup,
425         .hw_params      = da7210_hw_params,
426         .set_fmt        = da7210_set_dai_fmt,
427 };
428
429 static struct snd_soc_dai_driver da7210_dai = {
430         .name = "da7210-hifi",
431         /* playback capabilities */
432         .playback = {
433                 .stream_name = "Playback",
434                 .channels_min = 1,
435                 .channels_max = 2,
436                 .rates = SNDRV_PCM_RATE_8000_96000,
437                 .formats = DA7210_FORMATS,
438         },
439         /* capture capabilities */
440         .capture = {
441                 .stream_name = "Capture",
442                 .channels_min = 1,
443                 .channels_max = 2,
444                 .rates = SNDRV_PCM_RATE_8000_96000,
445                 .formats = DA7210_FORMATS,
446         },
447         .ops = &da7210_dai_ops,
448         .symmetric_rates = 1,
449 };
450
451 static int da7210_probe(struct snd_soc_codec *codec)
452 {
453         struct da7210_priv *da7210 = snd_soc_codec_get_drvdata(codec);
454
455         dev_info(codec->dev, "DA7210 Audio Codec %s\n", DA7210_VERSION);
456
457         codec->control_data     = da7210->control_data;
458         codec->hw_write         = (hw_write_t)i2c_master_send;
459
460         /* FIXME
461          *
462          * This driver use fixed value here
463          * And below settings expects MCLK = 12.288MHz
464          *
465          * When you select different MCLK, please check...
466          *      DA7210_PLL_DIV1 val
467          *      DA7210_PLL_DIV2 val
468          *      DA7210_PLL_DIV3 val
469          *      DA7210_PLL_DIV3 :: DA7210_MCLK_RANGExxx
470          */
471
472         /*
473          * make sure that DA7210 use bypass mode before start up
474          */
475         da7210_write(codec, DA7210_STARTUP1, 0);
476         da7210_write(codec, DA7210_PLL_DIV3,
477                      DA7210_MCLK_RANGE_10_20_MHZ | DA7210_PLL_BYP);
478
479         /*
480          * ADC settings
481          */
482
483         /* Enable Left & Right MIC PGA and Mic Bias */
484         da7210_write(codec, DA7210_MIC_L, DA7210_MIC_L_EN | DA7210_MICBIAS_EN);
485         da7210_write(codec, DA7210_MIC_R, DA7210_MIC_R_EN);
486
487         /* Enable Left and Right input PGA */
488         da7210_write(codec, DA7210_INMIX_L, DA7210_IN_L_EN);
489         da7210_write(codec, DA7210_INMIX_R, DA7210_IN_R_EN);
490
491         /* Enable Left and Right ADC */
492         da7210_write(codec, DA7210_ADC, DA7210_ADC_L_EN | DA7210_ADC_R_EN);
493
494         /*
495          * DAC settings
496          */
497
498         /* Enable Left and Right DAC */
499         da7210_write(codec, DA7210_DAC_SEL,
500                      DA7210_DAC_L_SRC_DAI_L | DA7210_DAC_L_EN |
501                      DA7210_DAC_R_SRC_DAI_R | DA7210_DAC_R_EN);
502
503         /* Enable Left and Right out PGA */
504         da7210_write(codec, DA7210_OUTMIX_L, DA7210_OUT_L_EN);
505         da7210_write(codec, DA7210_OUTMIX_R, DA7210_OUT_R_EN);
506
507         /* Enable Left and Right HeadPhone PGA */
508         da7210_write(codec, DA7210_HP_CFG,
509                      DA7210_HP_2CAP_MODE | DA7210_HP_SENSE_EN |
510                      DA7210_HP_L_EN | DA7210_HP_MODE | DA7210_HP_R_EN);
511
512         /* Diable PLL and bypass it */
513         da7210_write(codec, DA7210_PLL, DA7210_PLL_FS_48000);
514
515         /*
516          * If 48kHz sound came, it use bypass mode,
517          * and when it is 44.1kHz, it use PLL.
518          *
519          * This time, this driver sets PLL always ON
520          * and controls bypass/PLL mode by switching
521          * DA7210_PLL_DIV3 :: DA7210_PLL_BYP bit.
522          *   see da7210_hw_params
523          */
524         da7210_write(codec, DA7210_PLL_DIV1, 0xE5); /* MCLK = 12.288MHz */
525         da7210_write(codec, DA7210_PLL_DIV2, 0x99);
526         da7210_write(codec, DA7210_PLL_DIV3, 0x0A |
527                      DA7210_MCLK_RANGE_10_20_MHZ | DA7210_PLL_BYP);
528         snd_soc_update_bits(codec, DA7210_PLL, DA7210_PLL_EN, DA7210_PLL_EN);
529
530         /* As suggested by Dialog */
531         da7210_write(codec, DA7210_A_HID_UNLOCK,        0x8B); /* unlock */
532         da7210_write(codec, DA7210_A_TEST_UNLOCK,       0xB4);
533         da7210_write(codec, DA7210_A_PLL1,              0x01);
534         da7210_write(codec, DA7210_A_CP_MODE,           0x7C);
535         da7210_write(codec, DA7210_A_HID_UNLOCK,        0x00); /* re-lock */
536         da7210_write(codec, DA7210_A_TEST_UNLOCK,       0x00);
537
538         /* Activate all enabled subsystem */
539         da7210_write(codec, DA7210_STARTUP1, DA7210_SC_MST_EN);
540
541         snd_soc_add_controls(codec, da7210_snd_controls,
542                              ARRAY_SIZE(da7210_snd_controls));
543
544         dev_info(codec->dev, "DA7210 Audio Codec %s\n", DA7210_VERSION);
545
546         return 0;
547 }
548
549 static struct snd_soc_codec_driver soc_codec_dev_da7210 = {
550         .probe                  = da7210_probe,
551         .read                   = da7210_read,
552         .write                  = da7210_write,
553         .reg_cache_size         = ARRAY_SIZE(da7210_reg),
554         .reg_word_size          = sizeof(u8),
555         .reg_cache_default      = da7210_reg,
556 };
557
558 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
559 static int __devinit da7210_i2c_probe(struct i2c_client *i2c,
560                                       const struct i2c_device_id *id)
561 {
562         struct da7210_priv *da7210;
563         int ret;
564
565         da7210 = kzalloc(sizeof(struct da7210_priv), GFP_KERNEL);
566         if (!da7210)
567                 return -ENOMEM;
568
569         i2c_set_clientdata(i2c, da7210);
570         da7210->control_data = i2c;
571         da7210->control_type = SND_SOC_I2C;
572
573         ret =  snd_soc_register_codec(&i2c->dev,
574                         &soc_codec_dev_da7210, &da7210_dai, 1);
575         if (ret < 0)
576                 kfree(da7210);
577
578         return ret;
579 }
580
581 static int __devexit da7210_i2c_remove(struct i2c_client *client)
582 {
583         snd_soc_unregister_codec(&client->dev);
584         kfree(i2c_get_clientdata(client));
585         return 0;
586 }
587
588 static const struct i2c_device_id da7210_i2c_id[] = {
589         { "da7210", 0 },
590         { }
591 };
592 MODULE_DEVICE_TABLE(i2c, da7210_i2c_id);
593
594 /* I2C codec control layer */
595 static struct i2c_driver da7210_i2c_driver = {
596         .driver = {
597                 .name = "da7210-codec",
598                 .owner = THIS_MODULE,
599         },
600         .probe          = da7210_i2c_probe,
601         .remove         = __devexit_p(da7210_i2c_remove),
602         .id_table       = da7210_i2c_id,
603 };
604 #endif
605
606 static int __init da7210_modinit(void)
607 {
608         int ret = 0;
609 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
610         ret = i2c_add_driver(&da7210_i2c_driver);
611 #endif
612         return ret;
613 }
614 module_init(da7210_modinit);
615
616 static void __exit da7210_exit(void)
617 {
618 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
619         i2c_del_driver(&da7210_i2c_driver);
620 #endif
621 }
622 module_exit(da7210_exit);
623
624 MODULE_DESCRIPTION("ASoC DA7210 driver");
625 MODULE_AUTHOR("David Chen, Kuninori Morimoto");
626 MODULE_LICENSE("GPL");