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");