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21#include <linux/module.h>
22#include <linux/moduleparam.h>
23#include <linux/init.h>
24#include <linux/delay.h>
25#include <linux/pm.h>
26#include <linux/i2c.h>
27#include <linux/slab.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/tlv.h>
33#include <sound/initval.h>
34
35#include "tlv320aic23.h"
36
37
38
39
40static const u16 tlv320aic23_reg[] = {
41 0x0097, 0x0097, 0x00F9, 0x00F9,
42 0x001A, 0x0004, 0x0007, 0x0001,
43 0x0020, 0x0000, 0x0000, 0x0000,
44 0x0000, 0x0000, 0x0000, 0x0000,
45};
46
47static const char *rec_src_text[] = { "Line", "Mic" };
48static const char *deemph_text[] = {"None", "32Khz", "44.1Khz", "48Khz"};
49
50static const struct soc_enum rec_src_enum =
51 SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text);
52
53static const struct snd_kcontrol_new tlv320aic23_rec_src_mux_controls =
54SOC_DAPM_ENUM("Input Select", rec_src_enum);
55
56static const struct soc_enum tlv320aic23_rec_src =
57 SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text);
58static const struct soc_enum tlv320aic23_deemph =
59 SOC_ENUM_SINGLE(TLV320AIC23_DIGT, 1, 4, deemph_text);
60
61static const DECLARE_TLV_DB_SCALE(out_gain_tlv, -12100, 100, 0);
62static const DECLARE_TLV_DB_SCALE(input_gain_tlv, -1725, 75, 0);
63static const DECLARE_TLV_DB_SCALE(sidetone_vol_tlv, -1800, 300, 0);
64
65static int snd_soc_tlv320aic23_put_volsw(struct snd_kcontrol *kcontrol,
66 struct snd_ctl_elem_value *ucontrol)
67{
68 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
69 u16 val, reg;
70
71 val = (ucontrol->value.integer.value[0] & 0x07);
72
73
74
75
76
77
78
79
80 val = (val >= 4) ? 4 : (3 - val);
81
82 reg = snd_soc_read(codec, TLV320AIC23_ANLG) & (~0x1C0);
83 snd_soc_write(codec, TLV320AIC23_ANLG, reg | (val << 6));
84
85 return 0;
86}
87
88static int snd_soc_tlv320aic23_get_volsw(struct snd_kcontrol *kcontrol,
89 struct snd_ctl_elem_value *ucontrol)
90{
91 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
92 u16 val;
93
94 val = snd_soc_read(codec, TLV320AIC23_ANLG) & (0x1C0);
95 val = val >> 6;
96 val = (val >= 4) ? 4 : (3 - val);
97 ucontrol->value.integer.value[0] = val;
98 return 0;
99
100}
101
102static const struct snd_kcontrol_new tlv320aic23_snd_controls[] = {
103 SOC_DOUBLE_R_TLV("Digital Playback Volume", TLV320AIC23_LCHNVOL,
104 TLV320AIC23_RCHNVOL, 0, 127, 0, out_gain_tlv),
105 SOC_SINGLE("Digital Playback Switch", TLV320AIC23_DIGT, 3, 1, 1),
106 SOC_DOUBLE_R("Line Input Switch", TLV320AIC23_LINVOL,
107 TLV320AIC23_RINVOL, 7, 1, 0),
108 SOC_DOUBLE_R_TLV("Line Input Volume", TLV320AIC23_LINVOL,
109 TLV320AIC23_RINVOL, 0, 31, 0, input_gain_tlv),
110 SOC_SINGLE("Mic Input Switch", TLV320AIC23_ANLG, 1, 1, 1),
111 SOC_SINGLE("Mic Booster Switch", TLV320AIC23_ANLG, 0, 1, 0),
112 SOC_SINGLE_EXT_TLV("Sidetone Volume", TLV320AIC23_ANLG, 6, 4, 0,
113 snd_soc_tlv320aic23_get_volsw,
114 snd_soc_tlv320aic23_put_volsw, sidetone_vol_tlv),
115 SOC_ENUM("Playback De-emphasis", tlv320aic23_deemph),
116};
117
118
119static const struct snd_kcontrol_new tlv320aic23_output_mixer_controls[] = {
120 SOC_DAPM_SINGLE("Line Bypass Switch", TLV320AIC23_ANLG, 3, 1, 0),
121 SOC_DAPM_SINGLE("Mic Sidetone Switch", TLV320AIC23_ANLG, 5, 1, 0),
122 SOC_DAPM_SINGLE("Playback Switch", TLV320AIC23_ANLG, 4, 1, 0),
123};
124
125static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
126 SND_SOC_DAPM_DAC("DAC", "Playback", TLV320AIC23_PWR, 3, 1),
127 SND_SOC_DAPM_ADC("ADC", "Capture", TLV320AIC23_PWR, 2, 1),
128 SND_SOC_DAPM_MUX("Capture Source", SND_SOC_NOPM, 0, 0,
129 &tlv320aic23_rec_src_mux_controls),
130 SND_SOC_DAPM_MIXER("Output Mixer", TLV320AIC23_PWR, 4, 1,
131 &tlv320aic23_output_mixer_controls[0],
132 ARRAY_SIZE(tlv320aic23_output_mixer_controls)),
133 SND_SOC_DAPM_PGA("Line Input", TLV320AIC23_PWR, 0, 1, NULL, 0),
134 SND_SOC_DAPM_PGA("Mic Input", TLV320AIC23_PWR, 1, 1, NULL, 0),
135
136 SND_SOC_DAPM_OUTPUT("LHPOUT"),
137 SND_SOC_DAPM_OUTPUT("RHPOUT"),
138 SND_SOC_DAPM_OUTPUT("LOUT"),
139 SND_SOC_DAPM_OUTPUT("ROUT"),
140
141 SND_SOC_DAPM_INPUT("LLINEIN"),
142 SND_SOC_DAPM_INPUT("RLINEIN"),
143
144 SND_SOC_DAPM_INPUT("MICIN"),
145};
146
147static const struct snd_soc_dapm_route tlv320aic23_intercon[] = {
148
149 {"Output Mixer", "Line Bypass Switch", "Line Input"},
150 {"Output Mixer", "Playback Switch", "DAC"},
151 {"Output Mixer", "Mic Sidetone Switch", "Mic Input"},
152
153
154 {"RHPOUT", NULL, "Output Mixer"},
155 {"LHPOUT", NULL, "Output Mixer"},
156 {"LOUT", NULL, "Output Mixer"},
157 {"ROUT", NULL, "Output Mixer"},
158
159
160 {"Line Input", "NULL", "LLINEIN"},
161 {"Line Input", "NULL", "RLINEIN"},
162
163 {"Mic Input", "NULL", "MICIN"},
164
165
166 {"Capture Source", "Line", "Line Input"},
167 {"Capture Source", "Mic", "Mic Input"},
168 {"ADC", NULL, "Capture Source"},
169
170};
171
172
173struct aic23 {
174 enum snd_soc_control_type control_type;
175 int mclk;
176 int requested_adc;
177 int requested_dac;
178};
179
180
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183
184
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190
191
192
193static const int bosr_usb_divisor_table[] = {
194 128, 125, 192, 136
195};
196#define LOWER_GROUP ((1<<0) | (1<<1) | (1<<2) | (1<<3) | (1<<6) | (1<<7))
197#define UPPER_GROUP ((1<<8) | (1<<9) | (1<<10) | (1<<11) | (1<<15))
198static const unsigned short sr_valid_mask[] = {
199 LOWER_GROUP|UPPER_GROUP,
200 LOWER_GROUP,
201 LOWER_GROUP|UPPER_GROUP,
202 UPPER_GROUP,
203};
204
205
206
207#define SR_MULT (11*12)
208#define A(x) (SR_MULT/x)
209static const unsigned char sr_adc_mult_table[] = {
210 A(2), A(2), A(12), A(12), 0, 0, A(3), A(1),
211 A(2), A(2), A(11), A(11), 0, 0, 0, A(1)
212};
213static const unsigned char sr_dac_mult_table[] = {
214 A(2), A(12), A(2), A(12), 0, 0, A(3), A(1),
215 A(2), A(11), A(2), A(11), 0, 0, 0, A(1)
216};
217
218static unsigned get_score(int adc, int adc_l, int adc_h, int need_adc,
219 int dac, int dac_l, int dac_h, int need_dac)
220{
221 if ((adc >= adc_l) && (adc <= adc_h) &&
222 (dac >= dac_l) && (dac <= dac_h)) {
223 int diff_adc = need_adc - adc;
224 int diff_dac = need_dac - dac;
225 return abs(diff_adc) + abs(diff_dac);
226 }
227 return UINT_MAX;
228}
229
230static int find_rate(int mclk, u32 need_adc, u32 need_dac)
231{
232 int i, j;
233 int best_i = -1;
234 int best_j = -1;
235 int best_div = 0;
236 unsigned best_score = UINT_MAX;
237 int adc_l, adc_h, dac_l, dac_h;
238
239 need_adc *= SR_MULT;
240 need_dac *= SR_MULT;
241
242
243
244 adc_l = need_adc - (need_adc >> 5);
245 adc_h = need_adc + (need_adc >> 5);
246 dac_l = need_dac - (need_dac >> 5);
247 dac_h = need_dac + (need_dac >> 5);
248 for (i = 0; i < ARRAY_SIZE(bosr_usb_divisor_table); i++) {
249 int base = mclk / bosr_usb_divisor_table[i];
250 int mask = sr_valid_mask[i];
251 for (j = 0; j < ARRAY_SIZE(sr_adc_mult_table);
252 j++, mask >>= 1) {
253 int adc;
254 int dac;
255 int score;
256 if ((mask & 1) == 0)
257 continue;
258 adc = base * sr_adc_mult_table[j];
259 dac = base * sr_dac_mult_table[j];
260 score = get_score(adc, adc_l, adc_h, need_adc,
261 dac, dac_l, dac_h, need_dac);
262 if (best_score > score) {
263 best_score = score;
264 best_i = i;
265 best_j = j;
266 best_div = 0;
267 }
268 score = get_score((adc >> 1), adc_l, adc_h, need_adc,
269 (dac >> 1), dac_l, dac_h, need_dac);
270
271 if ((score != UINT_MAX) && (best_score >= score)) {
272 best_score = score;
273 best_i = i;
274 best_j = j;
275 best_div = 1;
276 }
277 }
278 }
279 return (best_j << 2) | best_i | (best_div << TLV320AIC23_CLKIN_SHIFT);
280}
281
282#ifdef DEBUG
283static void get_current_sample_rates(struct snd_soc_codec *codec, int mclk,
284 u32 *sample_rate_adc, u32 *sample_rate_dac)
285{
286 int src = snd_soc_read(codec, TLV320AIC23_SRATE);
287 int sr = (src >> 2) & 0x0f;
288 int val = (mclk / bosr_usb_divisor_table[src & 3]);
289 int adc = (val * sr_adc_mult_table[sr]) / SR_MULT;
290 int dac = (val * sr_dac_mult_table[sr]) / SR_MULT;
291 if (src & TLV320AIC23_CLKIN_HALF) {
292 adc >>= 1;
293 dac >>= 1;
294 }
295 *sample_rate_adc = adc;
296 *sample_rate_dac = dac;
297}
298#endif
299
300static int set_sample_rate_control(struct snd_soc_codec *codec, int mclk,
301 u32 sample_rate_adc, u32 sample_rate_dac)
302{
303
304 int data = find_rate(mclk, sample_rate_adc, sample_rate_dac);
305 if (data < 0) {
306 printk(KERN_ERR "%s:Invalid rate %u,%u requested\n",
307 __func__, sample_rate_adc, sample_rate_dac);
308 return -EINVAL;
309 }
310 snd_soc_write(codec, TLV320AIC23_SRATE, data);
311#ifdef DEBUG
312 {
313 u32 adc, dac;
314 get_current_sample_rates(codec, mclk, &adc, &dac);
315 printk(KERN_DEBUG "actual samplerate = %u,%u reg=%x\n",
316 adc, dac, data);
317 }
318#endif
319 return 0;
320}
321
322static int tlv320aic23_hw_params(struct snd_pcm_substream *substream,
323 struct snd_pcm_hw_params *params,
324 struct snd_soc_dai *dai)
325{
326 struct snd_soc_codec *codec = dai->codec;
327 u16 iface_reg;
328 int ret;
329 struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec);
330 u32 sample_rate_adc = aic23->requested_adc;
331 u32 sample_rate_dac = aic23->requested_dac;
332 u32 sample_rate = params_rate(params);
333
334 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
335 aic23->requested_dac = sample_rate_dac = sample_rate;
336 if (!sample_rate_adc)
337 sample_rate_adc = sample_rate;
338 } else {
339 aic23->requested_adc = sample_rate_adc = sample_rate;
340 if (!sample_rate_dac)
341 sample_rate_dac = sample_rate;
342 }
343 ret = set_sample_rate_control(codec, aic23->mclk, sample_rate_adc,
344 sample_rate_dac);
345 if (ret < 0)
346 return ret;
347
348 iface_reg = snd_soc_read(codec, TLV320AIC23_DIGT_FMT) & ~(0x03 << 2);
349
350 switch (params_format(params)) {
351 case SNDRV_PCM_FORMAT_S16_LE:
352 break;
353 case SNDRV_PCM_FORMAT_S20_3LE:
354 iface_reg |= (0x01 << 2);
355 break;
356 case SNDRV_PCM_FORMAT_S24_LE:
357 iface_reg |= (0x02 << 2);
358 break;
359 case SNDRV_PCM_FORMAT_S32_LE:
360 iface_reg |= (0x03 << 2);
361 break;
362 }
363 snd_soc_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);
364
365 return 0;
366}
367
368static int tlv320aic23_pcm_prepare(struct snd_pcm_substream *substream,
369 struct snd_soc_dai *dai)
370{
371 struct snd_soc_codec *codec = dai->codec;
372
373
374 snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x0001);
375
376 return 0;
377}
378
379static void tlv320aic23_shutdown(struct snd_pcm_substream *substream,
380 struct snd_soc_dai *dai)
381{
382 struct snd_soc_codec *codec = dai->codec;
383 struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec);
384
385
386 if (!codec->active) {
387 udelay(50);
388 snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x0);
389 }
390 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
391 aic23->requested_dac = 0;
392 else
393 aic23->requested_adc = 0;
394}
395
396static int tlv320aic23_mute(struct snd_soc_dai *dai, int mute)
397{
398 struct snd_soc_codec *codec = dai->codec;
399 u16 reg;
400
401 reg = snd_soc_read(codec, TLV320AIC23_DIGT);
402 if (mute)
403 reg |= TLV320AIC23_DACM_MUTE;
404
405 else
406 reg &= ~TLV320AIC23_DACM_MUTE;
407
408 snd_soc_write(codec, TLV320AIC23_DIGT, reg);
409
410 return 0;
411}
412
413static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai,
414 unsigned int fmt)
415{
416 struct snd_soc_codec *codec = codec_dai->codec;
417 u16 iface_reg;
418
419 iface_reg = snd_soc_read(codec, TLV320AIC23_DIGT_FMT) & (~0x03);
420
421
422 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
423 case SND_SOC_DAIFMT_CBM_CFM:
424 iface_reg |= TLV320AIC23_MS_MASTER;
425 break;
426 case SND_SOC_DAIFMT_CBS_CFS:
427 iface_reg &= ~TLV320AIC23_MS_MASTER;
428 break;
429 default:
430 return -EINVAL;
431
432 }
433
434
435 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
436 case SND_SOC_DAIFMT_I2S:
437 iface_reg |= TLV320AIC23_FOR_I2S;
438 break;
439 case SND_SOC_DAIFMT_DSP_A:
440 iface_reg |= TLV320AIC23_LRP_ON;
441 case SND_SOC_DAIFMT_DSP_B:
442 iface_reg |= TLV320AIC23_FOR_DSP;
443 break;
444 case SND_SOC_DAIFMT_RIGHT_J:
445 break;
446 case SND_SOC_DAIFMT_LEFT_J:
447 iface_reg |= TLV320AIC23_FOR_LJUST;
448 break;
449 default:
450 return -EINVAL;
451
452 }
453
454 snd_soc_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);
455
456 return 0;
457}
458
459static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai,
460 int clk_id, unsigned int freq, int dir)
461{
462 struct aic23 *aic23 = snd_soc_dai_get_drvdata(codec_dai);
463 aic23->mclk = freq;
464 return 0;
465}
466
467static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec,
468 enum snd_soc_bias_level level)
469{
470 u16 reg = snd_soc_read(codec, TLV320AIC23_PWR) & 0x17f;
471
472 switch (level) {
473 case SND_SOC_BIAS_ON:
474
475 reg &= ~(TLV320AIC23_DEVICE_PWR_OFF | TLV320AIC23_OSC_OFF | \
476 TLV320AIC23_DAC_OFF);
477 snd_soc_write(codec, TLV320AIC23_PWR, reg);
478 break;
479 case SND_SOC_BIAS_PREPARE:
480 break;
481 case SND_SOC_BIAS_STANDBY:
482
483 snd_soc_write(codec, TLV320AIC23_PWR,
484 reg | TLV320AIC23_CLK_OFF);
485 break;
486 case SND_SOC_BIAS_OFF:
487
488 snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x0);
489 snd_soc_write(codec, TLV320AIC23_PWR, 0x1ff);
490 break;
491 }
492 codec->dapm.bias_level = level;
493 return 0;
494}
495
496#define AIC23_RATES SNDRV_PCM_RATE_8000_96000
497#define AIC23_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
498 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE)
499
500static const struct snd_soc_dai_ops tlv320aic23_dai_ops = {
501 .prepare = tlv320aic23_pcm_prepare,
502 .hw_params = tlv320aic23_hw_params,
503 .shutdown = tlv320aic23_shutdown,
504 .digital_mute = tlv320aic23_mute,
505 .set_fmt = tlv320aic23_set_dai_fmt,
506 .set_sysclk = tlv320aic23_set_dai_sysclk,
507};
508
509static struct snd_soc_dai_driver tlv320aic23_dai = {
510 .name = "tlv320aic23-hifi",
511 .playback = {
512 .stream_name = "Playback",
513 .channels_min = 2,
514 .channels_max = 2,
515 .rates = AIC23_RATES,
516 .formats = AIC23_FORMATS,},
517 .capture = {
518 .stream_name = "Capture",
519 .channels_min = 2,
520 .channels_max = 2,
521 .rates = AIC23_RATES,
522 .formats = AIC23_FORMATS,},
523 .ops = &tlv320aic23_dai_ops,
524};
525
526static int tlv320aic23_suspend(struct snd_soc_codec *codec)
527{
528 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF);
529
530 return 0;
531}
532
533static int tlv320aic23_resume(struct snd_soc_codec *codec)
534{
535 snd_soc_cache_sync(codec);
536 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
537
538 return 0;
539}
540
541static int tlv320aic23_probe(struct snd_soc_codec *codec)
542{
543 struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec);
544 int ret;
545
546 ret = snd_soc_codec_set_cache_io(codec, 7, 9, aic23->control_type);
547 if (ret < 0) {
548 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
549 return ret;
550 }
551
552
553 snd_soc_write(codec, TLV320AIC23_RESET, 0);
554
555
556
557
558
559 snd_soc_cache_write(codec, 0x0A, 0);
560 snd_soc_cache_write(codec, 0x0B, 0);
561 snd_soc_cache_write(codec, 0x0C, 0);
562 snd_soc_cache_write(codec, 0x0D, 0);
563 snd_soc_cache_write(codec, 0x0E, 0);
564
565
566 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
567
568 snd_soc_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K);
569
570
571 snd_soc_update_bits(codec, TLV320AIC23_LINVOL,
572 TLV320AIC23_LIM_MUTED, TLV320AIC23_LRS_ENABLED);
573
574 snd_soc_update_bits(codec, TLV320AIC23_RINVOL,
575 TLV320AIC23_LIM_MUTED, TLV320AIC23_LRS_ENABLED);
576
577 snd_soc_update_bits(codec, TLV320AIC23_ANLG,
578 TLV320AIC23_BYPASS_ON | TLV320AIC23_MICM_MUTED,
579 0);
580
581
582 snd_soc_write(codec, TLV320AIC23_LCHNVOL,
583 TLV320AIC23_DEFAULT_OUT_VOL & TLV320AIC23_OUT_VOL_MASK);
584 snd_soc_write(codec, TLV320AIC23_RCHNVOL,
585 TLV320AIC23_DEFAULT_OUT_VOL & TLV320AIC23_OUT_VOL_MASK);
586
587 snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x1);
588
589 snd_soc_add_codec_controls(codec, tlv320aic23_snd_controls,
590 ARRAY_SIZE(tlv320aic23_snd_controls));
591
592 return 0;
593}
594
595static int tlv320aic23_remove(struct snd_soc_codec *codec)
596{
597 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF);
598 return 0;
599}
600
601static struct snd_soc_codec_driver soc_codec_dev_tlv320aic23 = {
602 .reg_cache_size = ARRAY_SIZE(tlv320aic23_reg),
603 .reg_word_size = sizeof(u16),
604 .reg_cache_default = tlv320aic23_reg,
605 .probe = tlv320aic23_probe,
606 .remove = tlv320aic23_remove,
607 .suspend = tlv320aic23_suspend,
608 .resume = tlv320aic23_resume,
609 .set_bias_level = tlv320aic23_set_bias_level,
610 .dapm_widgets = tlv320aic23_dapm_widgets,
611 .num_dapm_widgets = ARRAY_SIZE(tlv320aic23_dapm_widgets),
612 .dapm_routes = tlv320aic23_intercon,
613 .num_dapm_routes = ARRAY_SIZE(tlv320aic23_intercon),
614};
615
616#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
617
618
619
620
621static int tlv320aic23_codec_probe(struct i2c_client *i2c,
622 const struct i2c_device_id *i2c_id)
623{
624 struct aic23 *aic23;
625 int ret;
626
627 if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
628 return -EINVAL;
629
630 aic23 = devm_kzalloc(&i2c->dev, sizeof(struct aic23), GFP_KERNEL);
631 if (aic23 == NULL)
632 return -ENOMEM;
633
634 i2c_set_clientdata(i2c, aic23);
635 aic23->control_type = SND_SOC_I2C;
636
637 ret = snd_soc_register_codec(&i2c->dev,
638 &soc_codec_dev_tlv320aic23, &tlv320aic23_dai, 1);
639 return ret;
640}
641static int __exit tlv320aic23_i2c_remove(struct i2c_client *i2c)
642{
643 snd_soc_unregister_codec(&i2c->dev);
644 return 0;
645}
646
647static const struct i2c_device_id tlv320aic23_id[] = {
648 {"tlv320aic23", 0},
649 {}
650};
651
652MODULE_DEVICE_TABLE(i2c, tlv320aic23_id);
653
654static struct i2c_driver tlv320aic23_i2c_driver = {
655 .driver = {
656 .name = "tlv320aic23-codec",
657 },
658 .probe = tlv320aic23_codec_probe,
659 .remove = __exit_p(tlv320aic23_i2c_remove),
660 .id_table = tlv320aic23_id,
661};
662
663#endif
664
665static int __init tlv320aic23_modinit(void)
666{
667 int ret;
668#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
669 ret = i2c_add_driver(&tlv320aic23_i2c_driver);
670 if (ret != 0) {
671 printk(KERN_ERR "Failed to register TLV320AIC23 I2C driver: %d\n",
672 ret);
673 }
674#endif
675 return ret;
676}
677module_init(tlv320aic23_modinit);
678
679static void __exit tlv320aic23_exit(void)
680{
681#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
682 i2c_del_driver(&tlv320aic23_i2c_driver);
683#endif
684}
685module_exit(tlv320aic23_exit);
686
687MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver");
688MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>");
689MODULE_LICENSE("GPL");
690
