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TOMOYO Linux Cross Reference
Linux/sound/soc/codecs/tlv320aic23.c

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  1 /*
  2  * ALSA SoC TLV320AIC23 codec driver
  3  *
  4  * Author:      Arun KS, <arunks@mistralsolutions.com>
  5  * Copyright:   (C) 2008 Mistral Solutions Pvt Ltd.,
  6  *
  7  * Based on sound/soc/codecs/wm8731.c by Richard Purdie
  8  *
  9  * This program is free software; you can redistribute it and/or modify
 10  * it under the terms of the GNU General Public License version 2 as
 11  * published by the Free Software Foundation.
 12  *
 13  * Notes:
 14  *  The AIC23 is a driver for a low power stereo audio
 15  *  codec tlv320aic23
 16  *
 17  *  The machine layer should disable unsupported inputs/outputs by
 18  *  snd_soc_dapm_disable_pin(codec, "LHPOUT"), etc.
 19  */
 20 
 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/regmap.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  * AIC23 register cache
 39  */
 40 static const struct reg_default tlv320aic23_reg[] = {
 41         {  0, 0x0097 },
 42         {  1, 0x0097 },
 43         {  2, 0x00F9 },
 44         {  3, 0x00F9 },
 45         {  4, 0x001A },
 46         {  5, 0x0004 },
 47         {  6, 0x0007 },
 48         {  7, 0x0001 },
 49         {  8, 0x0020 },
 50         {  9, 0x0000 },
 51 };
 52 
 53 const struct regmap_config tlv320aic23_regmap = {
 54         .reg_bits = 7,
 55         .val_bits = 9,
 56 
 57         .max_register = TLV320AIC23_RESET,
 58         .reg_defaults = tlv320aic23_reg,
 59         .num_reg_defaults = ARRAY_SIZE(tlv320aic23_reg),
 60         .cache_type = REGCACHE_RBTREE,
 61 };
 62 EXPORT_SYMBOL(tlv320aic23_regmap);
 63 
 64 static const char *rec_src_text[] = { "Line", "Mic" };
 65 static const char *deemph_text[] = {"None", "32Khz", "44.1Khz", "48Khz"};
 66 
 67 static SOC_ENUM_SINGLE_DECL(rec_src_enum,
 68                             TLV320AIC23_ANLG, 2, rec_src_text);
 69 
 70 static const struct snd_kcontrol_new tlv320aic23_rec_src_mux_controls =
 71 SOC_DAPM_ENUM("Input Select", rec_src_enum);
 72 
 73 static SOC_ENUM_SINGLE_DECL(tlv320aic23_rec_src,
 74                             TLV320AIC23_ANLG, 2, rec_src_text);
 75 static SOC_ENUM_SINGLE_DECL(tlv320aic23_deemph,
 76                             TLV320AIC23_DIGT, 1, deemph_text);
 77 
 78 static const DECLARE_TLV_DB_SCALE(out_gain_tlv, -12100, 100, 0);
 79 static const DECLARE_TLV_DB_SCALE(input_gain_tlv, -1725, 75, 0);
 80 static const DECLARE_TLV_DB_SCALE(sidetone_vol_tlv, -1800, 300, 0);
 81 
 82 static int snd_soc_tlv320aic23_put_volsw(struct snd_kcontrol *kcontrol,
 83         struct snd_ctl_elem_value *ucontrol)
 84 {
 85         struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
 86         u16 val, reg;
 87 
 88         val = (ucontrol->value.integer.value[0] & 0x07);
 89 
 90         /* linear conversion to userspace
 91         * 000   =       -6db
 92         * 001   =       -9db
 93         * 010   =       -12db
 94         * 011   =       -18db (Min)
 95         * 100   =       0db (Max)
 96         */
 97         val = (val >= 4) ? 4  : (3 - val);
 98 
 99         reg = snd_soc_read(codec, TLV320AIC23_ANLG) & (~0x1C0);
100         snd_soc_write(codec, TLV320AIC23_ANLG, reg | (val << 6));
101 
102         return 0;
103 }
104 
105 static int snd_soc_tlv320aic23_get_volsw(struct snd_kcontrol *kcontrol,
106         struct snd_ctl_elem_value *ucontrol)
107 {
108         struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
109         u16 val;
110 
111         val = snd_soc_read(codec, TLV320AIC23_ANLG) & (0x1C0);
112         val = val >> 6;
113         val = (val >= 4) ? 4  : (3 -  val);
114         ucontrol->value.integer.value[0] = val;
115         return 0;
116 
117 }
118 
119 static const struct snd_kcontrol_new tlv320aic23_snd_controls[] = {
120         SOC_DOUBLE_R_TLV("Digital Playback Volume", TLV320AIC23_LCHNVOL,
121                          TLV320AIC23_RCHNVOL, 0, 127, 0, out_gain_tlv),
122         SOC_SINGLE("Digital Playback Switch", TLV320AIC23_DIGT, 3, 1, 1),
123         SOC_DOUBLE_R("Line Input Switch", TLV320AIC23_LINVOL,
124                      TLV320AIC23_RINVOL, 7, 1, 0),
125         SOC_DOUBLE_R_TLV("Line Input Volume", TLV320AIC23_LINVOL,
126                          TLV320AIC23_RINVOL, 0, 31, 0, input_gain_tlv),
127         SOC_SINGLE("Mic Input Switch", TLV320AIC23_ANLG, 1, 1, 1),
128         SOC_SINGLE("Mic Booster Switch", TLV320AIC23_ANLG, 0, 1, 0),
129         SOC_SINGLE_EXT_TLV("Sidetone Volume", TLV320AIC23_ANLG, 6, 4, 0,
130                            snd_soc_tlv320aic23_get_volsw,
131                            snd_soc_tlv320aic23_put_volsw, sidetone_vol_tlv),
132         SOC_ENUM("Playback De-emphasis", tlv320aic23_deemph),
133 };
134 
135 /* PGA Mixer controls for Line and Mic switch */
136 static const struct snd_kcontrol_new tlv320aic23_output_mixer_controls[] = {
137         SOC_DAPM_SINGLE("Line Bypass Switch", TLV320AIC23_ANLG, 3, 1, 0),
138         SOC_DAPM_SINGLE("Mic Sidetone Switch", TLV320AIC23_ANLG, 5, 1, 0),
139         SOC_DAPM_SINGLE("Playback Switch", TLV320AIC23_ANLG, 4, 1, 0),
140 };
141 
142 static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
143         SND_SOC_DAPM_DAC("DAC", "Playback", TLV320AIC23_PWR, 3, 1),
144         SND_SOC_DAPM_ADC("ADC", "Capture", TLV320AIC23_PWR, 2, 1),
145         SND_SOC_DAPM_MUX("Capture Source", SND_SOC_NOPM, 0, 0,
146                          &tlv320aic23_rec_src_mux_controls),
147         SND_SOC_DAPM_MIXER("Output Mixer", TLV320AIC23_PWR, 4, 1,
148                            &tlv320aic23_output_mixer_controls[0],
149                            ARRAY_SIZE(tlv320aic23_output_mixer_controls)),
150         SND_SOC_DAPM_PGA("Line Input", TLV320AIC23_PWR, 0, 1, NULL, 0),
151         SND_SOC_DAPM_PGA("Mic Input", TLV320AIC23_PWR, 1, 1, NULL, 0),
152 
153         SND_SOC_DAPM_OUTPUT("LHPOUT"),
154         SND_SOC_DAPM_OUTPUT("RHPOUT"),
155         SND_SOC_DAPM_OUTPUT("LOUT"),
156         SND_SOC_DAPM_OUTPUT("ROUT"),
157 
158         SND_SOC_DAPM_INPUT("LLINEIN"),
159         SND_SOC_DAPM_INPUT("RLINEIN"),
160 
161         SND_SOC_DAPM_INPUT("MICIN"),
162 };
163 
164 static const struct snd_soc_dapm_route tlv320aic23_intercon[] = {
165         /* Output Mixer */
166         {"Output Mixer", "Line Bypass Switch", "Line Input"},
167         {"Output Mixer", "Playback Switch", "DAC"},
168         {"Output Mixer", "Mic Sidetone Switch", "Mic Input"},
169 
170         /* Outputs */
171         {"RHPOUT", NULL, "Output Mixer"},
172         {"LHPOUT", NULL, "Output Mixer"},
173         {"LOUT", NULL, "Output Mixer"},
174         {"ROUT", NULL, "Output Mixer"},
175 
176         /* Inputs */
177         {"Line Input", "NULL", "LLINEIN"},
178         {"Line Input", "NULL", "RLINEIN"},
179 
180         {"Mic Input", "NULL", "MICIN"},
181 
182         /* input mux */
183         {"Capture Source", "Line", "Line Input"},
184         {"Capture Source", "Mic", "Mic Input"},
185         {"ADC", NULL, "Capture Source"},
186 
187 };
188 
189 /* AIC23 driver data */
190 struct aic23 {
191         struct regmap *regmap;
192         int mclk;
193         int requested_adc;
194         int requested_dac;
195 };
196 
197 /*
198  * Common Crystals used
199  * 11.2896 Mhz /128 = *88.2k  /192 = 58.8k
200  * 12.0000 Mhz /125 = *96k    /136 = 88.235K
201  * 12.2880 Mhz /128 = *96k    /192 = 64k
202  * 16.9344 Mhz /128 = 132.3k /192 = *88.2k
203  * 18.4320 Mhz /128 = 144k   /192 = *96k
204  */
205 
206 /*
207  * Normal BOSR 0-256/2 = 128, 1-384/2 = 192
208  * USB BOSR 0-250/2 = 125, 1-272/2 = 136
209  */
210 static const int bosr_usb_divisor_table[] = {
211         128, 125, 192, 136
212 };
213 #define LOWER_GROUP ((1<<0) | (1<<1) | (1<<2) | (1<<3) | (1<<6) | (1<<7))
214 #define UPPER_GROUP ((1<<8) | (1<<9) | (1<<10) | (1<<11)        | (1<<15))
215 static const unsigned short sr_valid_mask[] = {
216         LOWER_GROUP|UPPER_GROUP,        /* Normal, bosr - 0*/
217         LOWER_GROUP,                    /* Usb, bosr - 0*/
218         LOWER_GROUP|UPPER_GROUP,        /* Normal, bosr - 1*/
219         UPPER_GROUP,                    /* Usb, bosr - 1*/
220 };
221 /*
222  * Every divisor is a factor of 11*12
223  */
224 #define SR_MULT (11*12)
225 #define A(x) (SR_MULT/x)
226 static const unsigned char sr_adc_mult_table[] = {
227         A(2), A(2), A(12), A(12),  0, 0, A(3), A(1),
228         A(2), A(2), A(11), A(11),  0, 0, 0, A(1)
229 };
230 static const unsigned char sr_dac_mult_table[] = {
231         A(2), A(12), A(2), A(12),  0, 0, A(3), A(1),
232         A(2), A(11), A(2), A(11),  0, 0, 0, A(1)
233 };
234 
235 static unsigned get_score(int adc, int adc_l, int adc_h, int need_adc,
236                 int dac, int dac_l, int dac_h, int need_dac)
237 {
238         if ((adc >= adc_l) && (adc <= adc_h) &&
239                         (dac >= dac_l) && (dac <= dac_h)) {
240                 int diff_adc = need_adc - adc;
241                 int diff_dac = need_dac - dac;
242                 return abs(diff_adc) + abs(diff_dac);
243         }
244         return UINT_MAX;
245 }
246 
247 static int find_rate(int mclk, u32 need_adc, u32 need_dac)
248 {
249         int i, j;
250         int best_i = -1;
251         int best_j = -1;
252         int best_div = 0;
253         unsigned best_score = UINT_MAX;
254         int adc_l, adc_h, dac_l, dac_h;
255 
256         need_adc *= SR_MULT;
257         need_dac *= SR_MULT;
258         /*
259          * rates given are +/- 1/32
260          */
261         adc_l = need_adc - (need_adc >> 5);
262         adc_h = need_adc + (need_adc >> 5);
263         dac_l = need_dac - (need_dac >> 5);
264         dac_h = need_dac + (need_dac >> 5);
265         for (i = 0; i < ARRAY_SIZE(bosr_usb_divisor_table); i++) {
266                 int base = mclk / bosr_usb_divisor_table[i];
267                 int mask = sr_valid_mask[i];
268                 for (j = 0; j < ARRAY_SIZE(sr_adc_mult_table);
269                                 j++, mask >>= 1) {
270                         int adc;
271                         int dac;
272                         int score;
273                         if ((mask & 1) == 0)
274                                 continue;
275                         adc = base * sr_adc_mult_table[j];
276                         dac = base * sr_dac_mult_table[j];
277                         score = get_score(adc, adc_l, adc_h, need_adc,
278                                         dac, dac_l, dac_h, need_dac);
279                         if (best_score > score) {
280                                 best_score = score;
281                                 best_i = i;
282                                 best_j = j;
283                                 best_div = 0;
284                         }
285                         score = get_score((adc >> 1), adc_l, adc_h, need_adc,
286                                         (dac >> 1), dac_l, dac_h, need_dac);
287                         /* prefer to have a /2 */
288                         if ((score != UINT_MAX) && (best_score >= score)) {
289                                 best_score = score;
290                                 best_i = i;
291                                 best_j = j;
292                                 best_div = 1;
293                         }
294                 }
295         }
296         return (best_j << 2) | best_i | (best_div << TLV320AIC23_CLKIN_SHIFT);
297 }
298 
299 #ifdef DEBUG
300 static void get_current_sample_rates(struct snd_soc_codec *codec, int mclk,
301                 u32 *sample_rate_adc, u32 *sample_rate_dac)
302 {
303         int src = snd_soc_read(codec, TLV320AIC23_SRATE);
304         int sr = (src >> 2) & 0x0f;
305         int val = (mclk / bosr_usb_divisor_table[src & 3]);
306         int adc = (val * sr_adc_mult_table[sr]) / SR_MULT;
307         int dac = (val * sr_dac_mult_table[sr]) / SR_MULT;
308         if (src & TLV320AIC23_CLKIN_HALF) {
309                 adc >>= 1;
310                 dac >>= 1;
311         }
312         *sample_rate_adc = adc;
313         *sample_rate_dac = dac;
314 }
315 #endif
316 
317 static int set_sample_rate_control(struct snd_soc_codec *codec, int mclk,
318                 u32 sample_rate_adc, u32 sample_rate_dac)
319 {
320         /* Search for the right sample rate */
321         int data = find_rate(mclk, sample_rate_adc, sample_rate_dac);
322         if (data < 0) {
323                 printk(KERN_ERR "%s:Invalid rate %u,%u requested\n",
324                                 __func__, sample_rate_adc, sample_rate_dac);
325                 return -EINVAL;
326         }
327         snd_soc_write(codec, TLV320AIC23_SRATE, data);
328 #ifdef DEBUG
329         {
330                 u32 adc, dac;
331                 get_current_sample_rates(codec, mclk, &adc, &dac);
332                 printk(KERN_DEBUG "actual samplerate = %u,%u reg=%x\n",
333                         adc, dac, data);
334         }
335 #endif
336         return 0;
337 }
338 
339 static int tlv320aic23_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         u16 iface_reg;
345         int ret;
346         struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec);
347         u32 sample_rate_adc = aic23->requested_adc;
348         u32 sample_rate_dac = aic23->requested_dac;
349         u32 sample_rate = params_rate(params);
350 
351         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
352                 aic23->requested_dac = sample_rate_dac = sample_rate;
353                 if (!sample_rate_adc)
354                         sample_rate_adc = sample_rate;
355         } else {
356                 aic23->requested_adc = sample_rate_adc = sample_rate;
357                 if (!sample_rate_dac)
358                         sample_rate_dac = sample_rate;
359         }
360         ret = set_sample_rate_control(codec, aic23->mclk, sample_rate_adc,
361                         sample_rate_dac);
362         if (ret < 0)
363                 return ret;
364 
365         iface_reg = snd_soc_read(codec, TLV320AIC23_DIGT_FMT) & ~(0x03 << 2);
366 
367         switch (params_width(params)) {
368         case 16:
369                 break;
370         case 20:
371                 iface_reg |= (0x01 << 2);
372                 break;
373         case 24:
374                 iface_reg |= (0x02 << 2);
375                 break;
376         case 32:
377                 iface_reg |= (0x03 << 2);
378                 break;
379         }
380         snd_soc_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);
381 
382         return 0;
383 }
384 
385 static int tlv320aic23_pcm_prepare(struct snd_pcm_substream *substream,
386                                    struct snd_soc_dai *dai)
387 {
388         struct snd_soc_codec *codec = dai->codec;
389 
390         /* set active */
391         snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x0001);
392 
393         return 0;
394 }
395 
396 static void tlv320aic23_shutdown(struct snd_pcm_substream *substream,
397                                  struct snd_soc_dai *dai)
398 {
399         struct snd_soc_codec *codec = dai->codec;
400         struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec);
401 
402         /* deactivate */
403         if (!snd_soc_codec_is_active(codec)) {
404                 udelay(50);
405                 snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x0);
406         }
407         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
408                 aic23->requested_dac = 0;
409         else
410                 aic23->requested_adc = 0;
411 }
412 
413 static int tlv320aic23_mute(struct snd_soc_dai *dai, int mute)
414 {
415         struct snd_soc_codec *codec = dai->codec;
416         u16 reg;
417 
418         reg = snd_soc_read(codec, TLV320AIC23_DIGT);
419         if (mute)
420                 reg |= TLV320AIC23_DACM_MUTE;
421 
422         else
423                 reg &= ~TLV320AIC23_DACM_MUTE;
424 
425         snd_soc_write(codec, TLV320AIC23_DIGT, reg);
426 
427         return 0;
428 }
429 
430 static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai,
431                                    unsigned int fmt)
432 {
433         struct snd_soc_codec *codec = codec_dai->codec;
434         u16 iface_reg;
435 
436         iface_reg = snd_soc_read(codec, TLV320AIC23_DIGT_FMT) & (~0x03);
437 
438         /* set master/slave audio interface */
439         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
440         case SND_SOC_DAIFMT_CBM_CFM:
441                 iface_reg |= TLV320AIC23_MS_MASTER;
442                 break;
443         case SND_SOC_DAIFMT_CBS_CFS:
444                 iface_reg &= ~TLV320AIC23_MS_MASTER;
445                 break;
446         default:
447                 return -EINVAL;
448 
449         }
450 
451         /* interface format */
452         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
453         case SND_SOC_DAIFMT_I2S:
454                 iface_reg |= TLV320AIC23_FOR_I2S;
455                 break;
456         case SND_SOC_DAIFMT_DSP_A:
457                 iface_reg |= TLV320AIC23_LRP_ON;
458         case SND_SOC_DAIFMT_DSP_B:
459                 iface_reg |= TLV320AIC23_FOR_DSP;
460                 break;
461         case SND_SOC_DAIFMT_RIGHT_J:
462                 break;
463         case SND_SOC_DAIFMT_LEFT_J:
464                 iface_reg |= TLV320AIC23_FOR_LJUST;
465                 break;
466         default:
467                 return -EINVAL;
468 
469         }
470 
471         snd_soc_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);
472 
473         return 0;
474 }
475 
476 static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai,
477                                       int clk_id, unsigned int freq, int dir)
478 {
479         struct aic23 *aic23 = snd_soc_dai_get_drvdata(codec_dai);
480         aic23->mclk = freq;
481         return 0;
482 }
483 
484 static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec,
485                                       enum snd_soc_bias_level level)
486 {
487         u16 reg = snd_soc_read(codec, TLV320AIC23_PWR) & 0x17f;
488 
489         switch (level) {
490         case SND_SOC_BIAS_ON:
491                 /* vref/mid, osc on, dac unmute */
492                 reg &= ~(TLV320AIC23_DEVICE_PWR_OFF | TLV320AIC23_OSC_OFF | \
493                         TLV320AIC23_DAC_OFF);
494                 snd_soc_write(codec, TLV320AIC23_PWR, reg);
495                 break;
496         case SND_SOC_BIAS_PREPARE:
497                 break;
498         case SND_SOC_BIAS_STANDBY:
499                 /* everything off except vref/vmid, */
500                 snd_soc_write(codec, TLV320AIC23_PWR,
501                               reg | TLV320AIC23_CLK_OFF);
502                 break;
503         case SND_SOC_BIAS_OFF:
504                 /* everything off, dac mute, inactive */
505                 snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x0);
506                 snd_soc_write(codec, TLV320AIC23_PWR, 0x1ff);
507                 break;
508         }
509         return 0;
510 }
511 
512 #define AIC23_RATES     SNDRV_PCM_RATE_8000_96000
513 #define AIC23_FORMATS   (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
514                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE)
515 
516 static const struct snd_soc_dai_ops tlv320aic23_dai_ops = {
517         .prepare        = tlv320aic23_pcm_prepare,
518         .hw_params      = tlv320aic23_hw_params,
519         .shutdown       = tlv320aic23_shutdown,
520         .digital_mute   = tlv320aic23_mute,
521         .set_fmt        = tlv320aic23_set_dai_fmt,
522         .set_sysclk     = tlv320aic23_set_dai_sysclk,
523 };
524 
525 static struct snd_soc_dai_driver tlv320aic23_dai = {
526         .name = "tlv320aic23-hifi",
527         .playback = {
528                      .stream_name = "Playback",
529                      .channels_min = 2,
530                      .channels_max = 2,
531                      .rates = AIC23_RATES,
532                      .formats = AIC23_FORMATS,},
533         .capture = {
534                     .stream_name = "Capture",
535                     .channels_min = 2,
536                     .channels_max = 2,
537                     .rates = AIC23_RATES,
538                     .formats = AIC23_FORMATS,},
539         .ops = &tlv320aic23_dai_ops,
540 };
541 
542 static int tlv320aic23_resume(struct snd_soc_codec *codec)
543 {
544         struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec);
545         regcache_mark_dirty(aic23->regmap);
546         regcache_sync(aic23->regmap);
547 
548         return 0;
549 }
550 
551 static int tlv320aic23_codec_probe(struct snd_soc_codec *codec)
552 {
553         /* Reset codec */
554         snd_soc_write(codec, TLV320AIC23_RESET, 0);
555 
556         snd_soc_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K);
557 
558         /* Unmute input */
559         snd_soc_update_bits(codec, TLV320AIC23_LINVOL,
560                             TLV320AIC23_LIM_MUTED, TLV320AIC23_LRS_ENABLED);
561 
562         snd_soc_update_bits(codec, TLV320AIC23_RINVOL,
563                             TLV320AIC23_LIM_MUTED, TLV320AIC23_LRS_ENABLED);
564 
565         snd_soc_update_bits(codec, TLV320AIC23_ANLG,
566                             TLV320AIC23_BYPASS_ON | TLV320AIC23_MICM_MUTED,
567                             0);
568 
569         /* Default output volume */
570         snd_soc_write(codec, TLV320AIC23_LCHNVOL,
571                       TLV320AIC23_DEFAULT_OUT_VOL & TLV320AIC23_OUT_VOL_MASK);
572         snd_soc_write(codec, TLV320AIC23_RCHNVOL,
573                       TLV320AIC23_DEFAULT_OUT_VOL & TLV320AIC23_OUT_VOL_MASK);
574 
575         snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x1);
576 
577         return 0;
578 }
579 
580 static struct snd_soc_codec_driver soc_codec_dev_tlv320aic23 = {
581         .probe = tlv320aic23_codec_probe,
582         .resume = tlv320aic23_resume,
583         .set_bias_level = tlv320aic23_set_bias_level,
584         .suspend_bias_off = true,
585 
586         .controls = tlv320aic23_snd_controls,
587         .num_controls = ARRAY_SIZE(tlv320aic23_snd_controls),
588         .dapm_widgets = tlv320aic23_dapm_widgets,
589         .num_dapm_widgets = ARRAY_SIZE(tlv320aic23_dapm_widgets),
590         .dapm_routes = tlv320aic23_intercon,
591         .num_dapm_routes = ARRAY_SIZE(tlv320aic23_intercon),
592 };
593 
594 int tlv320aic23_probe(struct device *dev, struct regmap *regmap)
595 {
596         struct aic23 *aic23;
597 
598         if (IS_ERR(regmap))
599                 return PTR_ERR(regmap);
600 
601         aic23 = devm_kzalloc(dev, sizeof(struct aic23), GFP_KERNEL);
602         if (aic23 == NULL)
603                 return -ENOMEM;
604 
605         aic23->regmap = regmap;
606 
607         dev_set_drvdata(dev, aic23);
608 
609         return snd_soc_register_codec(dev, &soc_codec_dev_tlv320aic23,
610                                       &tlv320aic23_dai, 1);
611 }
612 EXPORT_SYMBOL(tlv320aic23_probe);
613 
614 MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver");
615 MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>");
616 MODULE_LICENSE("GPL");
617 

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