2 * ALSA SoC TLV320AIC23 codec driver
4 * Author: Arun KS, <arunks@mistralsolutions.com>
5 * Copyright: (C) 2008 Mistral Solutions Pvt Ltd.,
7 * Based on sound/soc/codecs/wm8731.c by Richard Purdie
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.
14 * The AIC23 is a driver for a low power stereo audio
17 * The machine layer should disable unsupported inputs/outputs by
18 * snd_soc_dapm_disable_pin(codec, "LHPOUT"), etc.
21 #include <linux/module.h>
22 #include <linux/moduleparam.h>
23 #include <linux/init.h>
24 #include <linux/delay.h>
26 #include <linux/i2c.h>
27 #include <linux/platform_device.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/soc-dapm.h>
33 #include <sound/tlv.h>
34 #include <sound/initval.h>
36 #include "tlv320aic23.h"
38 #define AIC23_VERSION "0.1"
40 struct tlv320aic23_srate_reg_info {
42 u8 control; /* SR3, SR2, SR1, SR0 and BOSR */
43 u8 divider; /* if 0 CLKIN = MCLK, if 1 CLKIN = MCLK/2 */
47 * AIC23 register cache
49 static const u16 tlv320aic23_reg[] = {
50 0x0097, 0x0097, 0x00F9, 0x00F9, /* 0 */
51 0x001A, 0x0004, 0x0007, 0x0001, /* 4 */
52 0x0020, 0x0000, 0x0000, 0x0000, /* 8 */
53 0x0000, 0x0000, 0x0000, 0x0000, /* 12 */
57 * read tlv320aic23 register cache
59 static inline unsigned int tlv320aic23_read_reg_cache(struct snd_soc_codec
60 *codec, unsigned int reg)
62 u16 *cache = codec->reg_cache;
63 if (reg >= ARRAY_SIZE(tlv320aic23_reg))
69 * write tlv320aic23 register cache
71 static inline void tlv320aic23_write_reg_cache(struct snd_soc_codec *codec,
74 u16 *cache = codec->reg_cache;
75 if (reg >= ARRAY_SIZE(tlv320aic23_reg))
81 * write to the tlv320aic23 register space
83 static int tlv320aic23_write(struct snd_soc_codec *codec, unsigned int reg,
89 /* TLV320AIC23 has 7 bit address and 9 bits of data
90 * so we need to switch one data bit into reg and rest
94 if ((reg < 0 || reg > 9) && (reg != 15)) {
95 printk(KERN_WARNING "%s Invalid register R%d\n", __func__, reg);
99 data[0] = (reg << 1) | (value >> 8 & 0x01);
100 data[1] = value & 0xff;
102 tlv320aic23_write_reg_cache(codec, reg, value);
104 if (codec->hw_write(codec->control_data, data, 2) == 2)
107 printk(KERN_ERR "%s cannot write %03x to register R%d\n", __func__,
113 static const char *rec_src_text[] = { "Line", "Mic" };
114 static const char *deemph_text[] = {"None", "32Khz", "44.1Khz", "48Khz"};
116 static const struct soc_enum rec_src_enum =
117 SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text);
119 static const struct snd_kcontrol_new tlv320aic23_rec_src_mux_controls =
120 SOC_DAPM_ENUM("Input Select", rec_src_enum);
122 static const struct soc_enum tlv320aic23_rec_src =
123 SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text);
124 static const struct soc_enum tlv320aic23_deemph =
125 SOC_ENUM_SINGLE(TLV320AIC23_DIGT, 1, 4, deemph_text);
127 static const DECLARE_TLV_DB_SCALE(out_gain_tlv, -12100, 100, 0);
128 static const DECLARE_TLV_DB_SCALE(input_gain_tlv, -1725, 75, 0);
129 static const DECLARE_TLV_DB_SCALE(sidetone_vol_tlv, -1800, 300, 0);
131 static int snd_soc_tlv320aic23_put_volsw(struct snd_kcontrol *kcontrol,
132 struct snd_ctl_elem_value *ucontrol)
134 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
137 val = (ucontrol->value.integer.value[0] & 0x07);
139 /* linear conversion to userspace
146 val = (val >= 4) ? 4 : (3 - val);
148 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (~0x1C0);
149 tlv320aic23_write(codec, TLV320AIC23_ANLG, reg | (val << 6));
154 static int snd_soc_tlv320aic23_get_volsw(struct snd_kcontrol *kcontrol,
155 struct snd_ctl_elem_value *ucontrol)
157 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
160 val = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (0x1C0);
162 val = (val >= 4) ? 4 : (3 - val);
163 ucontrol->value.integer.value[0] = val;
168 #define SOC_TLV320AIC23_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
169 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
170 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
171 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
172 .tlv.p = (tlv_array), \
173 .info = snd_soc_info_volsw, .get = snd_soc_tlv320aic23_get_volsw,\
174 .put = snd_soc_tlv320aic23_put_volsw, \
175 .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) }
177 static const struct snd_kcontrol_new tlv320aic23_snd_controls[] = {
178 SOC_DOUBLE_R_TLV("Digital Playback Volume", TLV320AIC23_LCHNVOL,
179 TLV320AIC23_RCHNVOL, 0, 127, 0, out_gain_tlv),
180 SOC_SINGLE("Digital Playback Switch", TLV320AIC23_DIGT, 3, 1, 1),
181 SOC_DOUBLE_R("Line Input Switch", TLV320AIC23_LINVOL,
182 TLV320AIC23_RINVOL, 7, 1, 0),
183 SOC_DOUBLE_R_TLV("Line Input Volume", TLV320AIC23_LINVOL,
184 TLV320AIC23_RINVOL, 0, 31, 0, input_gain_tlv),
185 SOC_SINGLE("Mic Input Switch", TLV320AIC23_ANLG, 1, 1, 1),
186 SOC_SINGLE("Mic Booster Switch", TLV320AIC23_ANLG, 0, 1, 0),
187 SOC_TLV320AIC23_SINGLE_TLV("Sidetone Volume", TLV320AIC23_ANLG,
188 6, 4, 0, sidetone_vol_tlv),
189 SOC_ENUM("Playback De-emphasis", tlv320aic23_deemph),
192 /* add non dapm controls */
193 static int tlv320aic23_add_controls(struct snd_soc_codec *codec)
198 for (i = 0; i < ARRAY_SIZE(tlv320aic23_snd_controls); i++) {
199 err = snd_ctl_add(codec->card,
200 snd_soc_cnew(&tlv320aic23_snd_controls[i],
210 /* PGA Mixer controls for Line and Mic switch */
211 static const struct snd_kcontrol_new tlv320aic23_output_mixer_controls[] = {
212 SOC_DAPM_SINGLE("Line Bypass Switch", TLV320AIC23_ANLG, 3, 1, 0),
213 SOC_DAPM_SINGLE("Mic Sidetone Switch", TLV320AIC23_ANLG, 5, 1, 0),
214 SOC_DAPM_SINGLE("Playback Switch", TLV320AIC23_ANLG, 4, 1, 0),
217 static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
218 SND_SOC_DAPM_DAC("DAC", "Playback", TLV320AIC23_PWR, 3, 1),
219 SND_SOC_DAPM_ADC("ADC", "Capture", TLV320AIC23_PWR, 2, 1),
220 SND_SOC_DAPM_MUX("Capture Source", SND_SOC_NOPM, 0, 0,
221 &tlv320aic23_rec_src_mux_controls),
222 SND_SOC_DAPM_MIXER("Output Mixer", TLV320AIC23_PWR, 4, 1,
223 &tlv320aic23_output_mixer_controls[0],
224 ARRAY_SIZE(tlv320aic23_output_mixer_controls)),
225 SND_SOC_DAPM_PGA("Line Input", TLV320AIC23_PWR, 0, 1, NULL, 0),
226 SND_SOC_DAPM_PGA("Mic Input", TLV320AIC23_PWR, 1, 1, NULL, 0),
228 SND_SOC_DAPM_OUTPUT("LHPOUT"),
229 SND_SOC_DAPM_OUTPUT("RHPOUT"),
230 SND_SOC_DAPM_OUTPUT("LOUT"),
231 SND_SOC_DAPM_OUTPUT("ROUT"),
233 SND_SOC_DAPM_INPUT("LLINEIN"),
234 SND_SOC_DAPM_INPUT("RLINEIN"),
236 SND_SOC_DAPM_INPUT("MICIN"),
239 static const struct snd_soc_dapm_route intercon[] = {
241 {"Output Mixer", "Line Bypass Switch", "Line Input"},
242 {"Output Mixer", "Playback Switch", "DAC"},
243 {"Output Mixer", "Mic Sidetone Switch", "Mic Input"},
246 {"RHPOUT", NULL, "Output Mixer"},
247 {"LHPOUT", NULL, "Output Mixer"},
248 {"LOUT", NULL, "Output Mixer"},
249 {"ROUT", NULL, "Output Mixer"},
252 {"Line Input", "NULL", "LLINEIN"},
253 {"Line Input", "NULL", "RLINEIN"},
255 {"Mic Input", "NULL", "MICIN"},
258 {"Capture Source", "Line", "Line Input"},
259 {"Capture Source", "Mic", "Mic Input"},
260 {"ADC", NULL, "Capture Source"},
264 /* tlv320aic23 related */
265 static const struct tlv320aic23_srate_reg_info srate_reg_info[] = {
266 {4000, 0x06, 1}, /* 4000 */
267 {8000, 0x06, 0}, /* 8000 */
268 {16000, 0x0C, 1}, /* 16000 */
269 {22050, 0x11, 1}, /* 22050 */
270 {24000, 0x00, 1}, /* 24000 */
271 {32000, 0x0C, 0}, /* 32000 */
272 {44100, 0x11, 0}, /* 44100 */
273 {48000, 0x00, 0}, /* 48000 */
274 {88200, 0x1F, 0}, /* 88200 */
275 {96000, 0x0E, 0}, /* 96000 */
278 static int tlv320aic23_add_widgets(struct snd_soc_codec *codec)
280 snd_soc_dapm_new_controls(codec, tlv320aic23_dapm_widgets,
281 ARRAY_SIZE(tlv320aic23_dapm_widgets));
283 /* set up audio path interconnects */
284 snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
286 snd_soc_dapm_new_widgets(codec);
290 static int tlv320aic23_hw_params(struct snd_pcm_substream *substream,
291 struct snd_pcm_hw_params *params)
293 struct snd_soc_pcm_runtime *rtd = substream->private_data;
294 struct snd_soc_device *socdev = rtd->socdev;
295 struct snd_soc_codec *codec = socdev->codec;
300 tlv320aic23_read_reg_cache(codec,
301 TLV320AIC23_DIGT_FMT) & ~(0x03 << 2);
303 /* Search for the right sample rate */
304 /* Verify what happens if the rate is not supported
305 * now it goes to 96Khz */
306 while ((srate_reg_info[count].sample_rate != params_rate(params)) &&
307 (count < ARRAY_SIZE(srate_reg_info))) {
311 data = (srate_reg_info[count].divider << TLV320AIC23_CLKIN_SHIFT) |
312 (srate_reg_info[count]. control << TLV320AIC23_BOSR_SHIFT) |
313 TLV320AIC23_USB_CLK_ON;
315 tlv320aic23_write(codec, TLV320AIC23_SRATE, data);
317 switch (params_format(params)) {
318 case SNDRV_PCM_FORMAT_S16_LE:
320 case SNDRV_PCM_FORMAT_S20_3LE:
321 iface_reg |= (0x01 << 2);
323 case SNDRV_PCM_FORMAT_S24_LE:
324 iface_reg |= (0x02 << 2);
326 case SNDRV_PCM_FORMAT_S32_LE:
327 iface_reg |= (0x03 << 2);
330 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);
335 static int tlv320aic23_pcm_prepare(struct snd_pcm_substream *substream)
337 struct snd_soc_pcm_runtime *rtd = substream->private_data;
338 struct snd_soc_device *socdev = rtd->socdev;
339 struct snd_soc_codec *codec = socdev->codec;
342 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0001);
347 static void tlv320aic23_shutdown(struct snd_pcm_substream *substream)
349 struct snd_soc_pcm_runtime *rtd = substream->private_data;
350 struct snd_soc_device *socdev = rtd->socdev;
351 struct snd_soc_codec *codec = socdev->codec;
354 if (!codec->active) {
356 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0);
360 static int tlv320aic23_mute(struct snd_soc_dai *dai, int mute)
362 struct snd_soc_codec *codec = dai->codec;
365 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT);
367 reg |= TLV320AIC23_DACM_MUTE;
370 reg &= ~TLV320AIC23_DACM_MUTE;
372 tlv320aic23_write(codec, TLV320AIC23_DIGT, reg);
377 static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai,
380 struct snd_soc_codec *codec = codec_dai->codec;
384 tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT_FMT) & (~0x03);
386 /* set master/slave audio interface */
387 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
388 case SND_SOC_DAIFMT_CBM_CFM:
389 iface_reg |= TLV320AIC23_MS_MASTER;
391 case SND_SOC_DAIFMT_CBS_CFS:
398 /* interface format */
399 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
400 case SND_SOC_DAIFMT_I2S:
401 iface_reg |= TLV320AIC23_FOR_I2S;
403 case SND_SOC_DAIFMT_DSP_A:
404 iface_reg |= TLV320AIC23_FOR_DSP;
406 case SND_SOC_DAIFMT_RIGHT_J:
408 case SND_SOC_DAIFMT_LEFT_J:
409 iface_reg |= TLV320AIC23_FOR_LJUST;
416 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);
421 static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai,
422 int clk_id, unsigned int freq, int dir)
424 struct snd_soc_codec *codec = codec_dai->codec;
433 static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec,
434 enum snd_soc_bias_level level)
436 u16 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_PWR) & 0xff7f;
439 case SND_SOC_BIAS_ON:
440 /* vref/mid, osc on, dac unmute */
441 tlv320aic23_write(codec, TLV320AIC23_PWR, reg);
443 case SND_SOC_BIAS_PREPARE:
445 case SND_SOC_BIAS_STANDBY:
446 /* everything off except vref/vmid, */
447 tlv320aic23_write(codec, TLV320AIC23_PWR, reg | 0x0040);
449 case SND_SOC_BIAS_OFF:
450 /* everything off, dac mute, inactive */
451 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0);
452 tlv320aic23_write(codec, TLV320AIC23_PWR, 0xffff);
455 codec->bias_level = level;
459 #define AIC23_RATES SNDRV_PCM_RATE_8000_96000
460 #define AIC23_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
461 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE)
463 struct snd_soc_dai tlv320aic23_dai = {
464 .name = "tlv320aic23",
466 .stream_name = "Playback",
469 .rates = AIC23_RATES,
470 .formats = AIC23_FORMATS,},
472 .stream_name = "Capture",
475 .rates = AIC23_RATES,
476 .formats = AIC23_FORMATS,},
478 .prepare = tlv320aic23_pcm_prepare,
479 .hw_params = tlv320aic23_hw_params,
480 .shutdown = tlv320aic23_shutdown,
483 .digital_mute = tlv320aic23_mute,
484 .set_fmt = tlv320aic23_set_dai_fmt,
485 .set_sysclk = tlv320aic23_set_dai_sysclk,
488 EXPORT_SYMBOL_GPL(tlv320aic23_dai);
490 static int tlv320aic23_suspend(struct platform_device *pdev,
493 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
494 struct snd_soc_codec *codec = socdev->codec;
496 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0);
497 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF);
502 static int tlv320aic23_resume(struct platform_device *pdev)
504 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
505 struct snd_soc_codec *codec = socdev->codec;
509 /* Sync reg_cache with the hardware */
510 for (reg = 0; reg < ARRAY_SIZE(tlv320aic23_reg); i++) {
511 u16 val = tlv320aic23_read_reg_cache(codec, reg);
512 tlv320aic23_write(codec, reg, val);
515 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
516 tlv320aic23_set_bias_level(codec, codec->suspend_bias_level);
522 * initialise the AIC23 driver
523 * register the mixer and dsp interfaces with the kernel
525 static int tlv320aic23_init(struct snd_soc_device *socdev)
527 struct snd_soc_codec *codec = socdev->codec;
531 codec->name = "tlv320aic23";
532 codec->owner = THIS_MODULE;
533 codec->read = tlv320aic23_read_reg_cache;
534 codec->write = tlv320aic23_write;
535 codec->set_bias_level = tlv320aic23_set_bias_level;
536 codec->dai = &tlv320aic23_dai;
538 codec->reg_cache_size = ARRAY_SIZE(tlv320aic23_reg);
540 kmemdup(tlv320aic23_reg, sizeof(tlv320aic23_reg), GFP_KERNEL);
541 if (codec->reg_cache == NULL)
545 tlv320aic23_write(codec, TLV320AIC23_RESET, 0);
548 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
550 printk(KERN_ERR "tlv320aic23: failed to create pcms\n");
554 /* power on device */
555 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
557 tlv320aic23_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K);
560 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_LINVOL);
561 tlv320aic23_write(codec, TLV320AIC23_LINVOL,
562 (reg & (~TLV320AIC23_LIM_MUTED)) |
563 (TLV320AIC23_LRS_ENABLED));
565 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_RINVOL);
566 tlv320aic23_write(codec, TLV320AIC23_RINVOL,
567 (reg & (~TLV320AIC23_LIM_MUTED)) |
568 TLV320AIC23_LRS_ENABLED);
570 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG);
571 tlv320aic23_write(codec, TLV320AIC23_ANLG,
572 (reg) & (~TLV320AIC23_BYPASS_ON) &
573 (~TLV320AIC23_MICM_MUTED));
575 /* Default output volume */
576 tlv320aic23_write(codec, TLV320AIC23_LCHNVOL,
577 TLV320AIC23_DEFAULT_OUT_VOL &
578 TLV320AIC23_OUT_VOL_MASK);
579 tlv320aic23_write(codec, TLV320AIC23_RCHNVOL,
580 TLV320AIC23_DEFAULT_OUT_VOL &
581 TLV320AIC23_OUT_VOL_MASK);
583 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x1);
585 tlv320aic23_add_controls(codec);
586 tlv320aic23_add_widgets(codec);
587 ret = snd_soc_register_card(socdev);
589 printk(KERN_ERR "tlv320aic23: failed to register card\n");
596 snd_soc_free_pcms(socdev);
597 snd_soc_dapm_free(socdev);
599 kfree(codec->reg_cache);
602 static struct snd_soc_device *tlv320aic23_socdev;
604 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
606 * If the i2c layer weren't so broken, we could pass this kind of data
609 static int tlv320aic23_codec_probe(struct i2c_client *i2c,
610 const struct i2c_device_id *i2c_id)
612 struct snd_soc_device *socdev = tlv320aic23_socdev;
613 struct snd_soc_codec *codec = socdev->codec;
616 if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
619 i2c_set_clientdata(i2c, codec);
620 codec->control_data = i2c;
622 ret = tlv320aic23_init(socdev);
624 printk(KERN_ERR "tlv320aic23: failed to initialise AIC23\n");
634 static int __exit tlv320aic23_i2c_remove(struct i2c_client *i2c)
636 put_device(&i2c->dev);
640 static const struct i2c_device_id tlv320aic23_id[] = {
645 MODULE_DEVICE_TABLE(i2c, tlv320aic23_id);
647 static struct i2c_driver tlv320aic23_i2c_driver = {
649 .name = "tlv320aic23",
651 .probe = tlv320aic23_codec_probe,
652 .remove = __exit_p(tlv320aic23_i2c_remove),
653 .id_table = tlv320aic23_id,
658 static int tlv320aic23_probe(struct platform_device *pdev)
660 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
661 struct snd_soc_codec *codec;
664 printk(KERN_INFO "AIC23 Audio Codec %s\n", AIC23_VERSION);
666 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
670 socdev->codec = codec;
671 mutex_init(&codec->mutex);
672 INIT_LIST_HEAD(&codec->dapm_widgets);
673 INIT_LIST_HEAD(&codec->dapm_paths);
675 tlv320aic23_socdev = socdev;
676 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
677 codec->hw_write = (hw_write_t) i2c_master_send;
678 codec->hw_read = NULL;
679 ret = i2c_add_driver(&tlv320aic23_i2c_driver);
681 printk(KERN_ERR "can't add i2c driver");
686 static int tlv320aic23_remove(struct platform_device *pdev)
688 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
689 struct snd_soc_codec *codec = socdev->codec;
691 if (codec->control_data)
692 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF);
694 snd_soc_free_pcms(socdev);
695 snd_soc_dapm_free(socdev);
696 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
697 i2c_del_driver(&tlv320aic23_i2c_driver);
699 kfree(codec->reg_cache);
704 struct snd_soc_codec_device soc_codec_dev_tlv320aic23 = {
705 .probe = tlv320aic23_probe,
706 .remove = tlv320aic23_remove,
707 .suspend = tlv320aic23_suspend,
708 .resume = tlv320aic23_resume,
710 EXPORT_SYMBOL_GPL(soc_codec_dev_tlv320aic23);
712 MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver");
713 MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>");
714 MODULE_LICENSE("GPL");