2 * File: sound/soc/codecs/ssm2602.c
3 * Author: Cliff Cai <Cliff.Cai@analog.com>
5 * Created: Tue June 06 2008
6 * Description: Driver for ssm2602 sound chip
9 * Copyright 2008 Analog Devices Inc.
11 * Bugs: Enter bugs at http://blackfin.uclinux.org/
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, see the file COPYING, or write
25 * to the Free Software Foundation, Inc.,
26 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
29 #include <linux/module.h>
30 #include <linux/moduleparam.h>
31 #include <linux/init.h>
32 #include <linux/delay.h>
34 #include <linux/i2c.h>
35 #include <linux/platform_device.h>
36 #include <sound/core.h>
37 #include <sound/pcm.h>
38 #include <sound/pcm_params.h>
39 #include <sound/soc.h>
40 #include <sound/soc-dapm.h>
41 #include <sound/initval.h>
45 #define SSM2602_VERSION "0.1"
47 struct snd_soc_codec_device soc_codec_dev_ssm2602;
49 /* codec private data */
52 struct snd_pcm_substream *master_substream;
53 struct snd_pcm_substream *slave_substream;
57 * ssm2602 register cache
58 * We can't read the ssm2602 register space when we are
59 * using 2 wire for device control, so we cache them instead.
60 * There is no point in caching the reset register
62 static const u16 ssm2602_reg[SSM2602_CACHEREGNUM] = {
63 0x0017, 0x0017, 0x0079, 0x0079,
64 0x0000, 0x0000, 0x0000, 0x000a,
69 * read ssm2602 register cache
71 static inline unsigned int ssm2602_read_reg_cache(struct snd_soc_codec *codec,
74 u16 *cache = codec->reg_cache;
75 if (reg == SSM2602_RESET)
77 if (reg >= SSM2602_CACHEREGNUM)
83 * write ssm2602 register cache
85 static inline void ssm2602_write_reg_cache(struct snd_soc_codec *codec,
86 u16 reg, unsigned int value)
88 u16 *cache = codec->reg_cache;
89 if (reg >= SSM2602_CACHEREGNUM)
95 * write to the ssm2602 register space
97 static int ssm2602_write(struct snd_soc_codec *codec, unsigned int reg,
103 * D15..D9 ssm2602 register offset
104 * D8...D0 register data
106 data[0] = (reg << 1) | ((value >> 8) & 0x0001);
107 data[1] = value & 0x00ff;
109 ssm2602_write_reg_cache(codec, reg, value);
110 if (codec->hw_write(codec->control_data, data, 2) == 2)
116 #define ssm2602_reset(c) ssm2602_write(c, SSM2602_RESET, 0)
118 /*Appending several "None"s just for OSS mixer use*/
119 static const char *ssm2602_input_select[] = {
120 "Line", "Mic", "None", "None", "None",
121 "None", "None", "None",
124 static const char *ssm2602_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
126 static const struct soc_enum ssm2602_enum[] = {
127 SOC_ENUM_SINGLE(SSM2602_APANA, 2, 2, ssm2602_input_select),
128 SOC_ENUM_SINGLE(SSM2602_APDIGI, 1, 4, ssm2602_deemph),
131 static const struct snd_kcontrol_new ssm2602_snd_controls[] = {
133 SOC_DOUBLE_R("Master Playback Volume", SSM2602_LOUT1V, SSM2602_ROUT1V,
135 SOC_DOUBLE_R("Master Playback ZC Switch", SSM2602_LOUT1V, SSM2602_ROUT1V,
138 SOC_DOUBLE_R("Capture Volume", SSM2602_LINVOL, SSM2602_RINVOL, 0, 31, 0),
139 SOC_DOUBLE_R("Capture Switch", SSM2602_LINVOL, SSM2602_RINVOL, 7, 1, 1),
141 SOC_SINGLE("Mic Boost (+20dB)", SSM2602_APANA, 0, 1, 0),
142 SOC_SINGLE("Mic Switch", SSM2602_APANA, 1, 1, 1),
144 SOC_SINGLE("Sidetone Playback Volume", SSM2602_APANA, 6, 3, 1),
146 SOC_SINGLE("ADC High Pass Filter Switch", SSM2602_APDIGI, 0, 1, 1),
147 SOC_SINGLE("Store DC Offset Switch", SSM2602_APDIGI, 4, 1, 0),
149 SOC_ENUM("Capture Source", ssm2602_enum[0]),
151 SOC_ENUM("Playback De-emphasis", ssm2602_enum[1]),
154 /* add non dapm controls */
155 static int ssm2602_add_controls(struct snd_soc_codec *codec)
159 for (i = 0; i < ARRAY_SIZE(ssm2602_snd_controls); i++) {
160 err = snd_ctl_add(codec->card,
161 snd_soc_cnew(&ssm2602_snd_controls[i], codec, NULL));
170 static const struct snd_kcontrol_new ssm2602_output_mixer_controls[] = {
171 SOC_DAPM_SINGLE("Line Bypass Switch", SSM2602_APANA, 3, 1, 0),
172 SOC_DAPM_SINGLE("Mic Sidetone Switch", SSM2602_APANA, 5, 1, 0),
173 SOC_DAPM_SINGLE("HiFi Playback Switch", SSM2602_APANA, 4, 1, 0),
177 static const struct snd_kcontrol_new ssm2602_input_mux_controls =
178 SOC_DAPM_ENUM("Input Select", ssm2602_enum[0]);
180 static const struct snd_soc_dapm_widget ssm2602_dapm_widgets[] = {
181 SND_SOC_DAPM_MIXER("Output Mixer", SSM2602_PWR, 4, 1,
182 &ssm2602_output_mixer_controls[0],
183 ARRAY_SIZE(ssm2602_output_mixer_controls)),
184 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SSM2602_PWR, 3, 1),
185 SND_SOC_DAPM_OUTPUT("LOUT"),
186 SND_SOC_DAPM_OUTPUT("LHPOUT"),
187 SND_SOC_DAPM_OUTPUT("ROUT"),
188 SND_SOC_DAPM_OUTPUT("RHPOUT"),
189 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", SSM2602_PWR, 2, 1),
190 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &ssm2602_input_mux_controls),
191 SND_SOC_DAPM_PGA("Line Input", SSM2602_PWR, 0, 1, NULL, 0),
192 SND_SOC_DAPM_MICBIAS("Mic Bias", SSM2602_PWR, 1, 1),
193 SND_SOC_DAPM_INPUT("MICIN"),
194 SND_SOC_DAPM_INPUT("RLINEIN"),
195 SND_SOC_DAPM_INPUT("LLINEIN"),
198 static const struct snd_soc_dapm_route audio_conn[] = {
200 {"Output Mixer", "Line Bypass Switch", "Line Input"},
201 {"Output Mixer", "HiFi Playback Switch", "DAC"},
202 {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"},
205 {"RHPOUT", NULL, "Output Mixer"},
206 {"ROUT", NULL, "Output Mixer"},
207 {"LHPOUT", NULL, "Output Mixer"},
208 {"LOUT", NULL, "Output Mixer"},
211 {"Input Mux", "Line", "Line Input"},
212 {"Input Mux", "Mic", "Mic Bias"},
213 {"ADC", NULL, "Input Mux"},
216 {"Line Input", NULL, "LLINEIN"},
217 {"Line Input", NULL, "RLINEIN"},
218 {"Mic Bias", NULL, "MICIN"},
221 static int ssm2602_add_widgets(struct snd_soc_codec *codec)
223 snd_soc_dapm_new_controls(codec, ssm2602_dapm_widgets,
224 ARRAY_SIZE(ssm2602_dapm_widgets));
226 snd_soc_dapm_add_routes(codec, audio_conn, ARRAY_SIZE(audio_conn));
228 snd_soc_dapm_new_widgets(codec);
241 /* codec mclk clock divider coefficients */
242 static const struct _coeff_div coeff_div[] = {
244 {12288000, 48000, 256, 0x0, 0x0, 0x0},
245 {18432000, 48000, 384, 0x0, 0x1, 0x0},
246 {12000000, 48000, 250, 0x0, 0x0, 0x1},
249 {12288000, 32000, 384, 0x6, 0x0, 0x0},
250 {18432000, 32000, 576, 0x6, 0x1, 0x0},
251 {12000000, 32000, 375, 0x6, 0x0, 0x1},
254 {12288000, 8000, 1536, 0x3, 0x0, 0x0},
255 {18432000, 8000, 2304, 0x3, 0x1, 0x0},
256 {11289600, 8000, 1408, 0xb, 0x0, 0x0},
257 {16934400, 8000, 2112, 0xb, 0x1, 0x0},
258 {12000000, 8000, 1500, 0x3, 0x0, 0x1},
261 {12288000, 96000, 128, 0x7, 0x0, 0x0},
262 {18432000, 96000, 192, 0x7, 0x1, 0x0},
263 {12000000, 96000, 125, 0x7, 0x0, 0x1},
266 {11289600, 44100, 256, 0x8, 0x0, 0x0},
267 {16934400, 44100, 384, 0x8, 0x1, 0x0},
268 {12000000, 44100, 272, 0x8, 0x1, 0x1},
271 {11289600, 88200, 128, 0xf, 0x0, 0x0},
272 {16934400, 88200, 192, 0xf, 0x1, 0x0},
273 {12000000, 88200, 136, 0xf, 0x1, 0x1},
276 static inline int get_coeff(int mclk, int rate)
280 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
281 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
287 static int ssm2602_hw_params(struct snd_pcm_substream *substream,
288 struct snd_pcm_hw_params *params)
291 struct snd_soc_pcm_runtime *rtd = substream->private_data;
292 struct snd_soc_device *socdev = rtd->socdev;
293 struct snd_soc_codec *codec = socdev->codec;
294 struct ssm2602_priv *ssm2602 = codec->private_data;
295 u16 iface = ssm2602_read_reg_cache(codec, SSM2602_IFACE) & 0xfff3;
296 int i = get_coeff(ssm2602->sysclk, params_rate(params));
298 /*no match is found*/
299 if (i == ARRAY_SIZE(coeff_div))
302 srate = (coeff_div[i].sr << 2) |
303 (coeff_div[i].bosr << 1) | coeff_div[i].usb;
305 ssm2602_write(codec, SSM2602_ACTIVE, 0);
306 ssm2602_write(codec, SSM2602_SRATE, srate);
309 switch (params_format(params)) {
310 case SNDRV_PCM_FORMAT_S16_LE:
312 case SNDRV_PCM_FORMAT_S20_3LE:
315 case SNDRV_PCM_FORMAT_S24_LE:
318 case SNDRV_PCM_FORMAT_S32_LE:
322 ssm2602_write(codec, SSM2602_IFACE, iface);
323 ssm2602_write(codec, SSM2602_ACTIVE, ACTIVE_ACTIVATE_CODEC);
327 static int ssm2602_startup(struct snd_pcm_substream *substream)
329 struct snd_soc_pcm_runtime *rtd = substream->private_data;
330 struct snd_soc_device *socdev = rtd->socdev;
331 struct snd_soc_codec *codec = socdev->codec;
332 struct ssm2602_priv *ssm2602 = codec->private_data;
333 struct snd_pcm_runtime *master_runtime;
335 /* The DAI has shared clocks so if we already have a playback or
336 * capture going then constrain this substream to match it.
338 if (ssm2602->master_substream) {
339 master_runtime = ssm2602->master_substream->runtime;
340 snd_pcm_hw_constraint_minmax(substream->runtime,
341 SNDRV_PCM_HW_PARAM_RATE,
342 master_runtime->rate,
343 master_runtime->rate);
345 snd_pcm_hw_constraint_minmax(substream->runtime,
346 SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
347 master_runtime->sample_bits,
348 master_runtime->sample_bits);
350 ssm2602->slave_substream = substream;
352 ssm2602->master_substream = substream;
357 static int ssm2602_pcm_prepare(struct snd_pcm_substream *substream)
359 struct snd_soc_pcm_runtime *rtd = substream->private_data;
360 struct snd_soc_device *socdev = rtd->socdev;
361 struct snd_soc_codec *codec = socdev->codec;
363 ssm2602_write(codec, SSM2602_ACTIVE, ACTIVE_ACTIVATE_CODEC);
368 static void ssm2602_shutdown(struct snd_pcm_substream *substream)
370 struct snd_soc_pcm_runtime *rtd = substream->private_data;
371 struct snd_soc_device *socdev = rtd->socdev;
372 struct snd_soc_codec *codec = socdev->codec;
375 ssm2602_write(codec, SSM2602_ACTIVE, 0);
378 static int ssm2602_mute(struct snd_soc_dai *dai, int mute)
380 struct snd_soc_codec *codec = dai->codec;
381 u16 mute_reg = ssm2602_read_reg_cache(codec, SSM2602_APDIGI) & ~APDIGI_ENABLE_DAC_MUTE;
383 ssm2602_write(codec, SSM2602_APDIGI,
384 mute_reg | APDIGI_ENABLE_DAC_MUTE);
386 ssm2602_write(codec, SSM2602_APDIGI, mute_reg);
390 static int ssm2602_set_dai_sysclk(struct snd_soc_dai *codec_dai,
391 int clk_id, unsigned int freq, int dir)
393 struct snd_soc_codec *codec = codec_dai->codec;
394 struct ssm2602_priv *ssm2602 = codec->private_data;
401 ssm2602->sysclk = freq;
407 static int ssm2602_set_dai_fmt(struct snd_soc_dai *codec_dai,
410 struct snd_soc_codec *codec = codec_dai->codec;
413 /* set master/slave audio interface */
414 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
415 case SND_SOC_DAIFMT_CBM_CFM:
418 case SND_SOC_DAIFMT_CBS_CFS:
424 /* interface format */
425 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
426 case SND_SOC_DAIFMT_I2S:
429 case SND_SOC_DAIFMT_RIGHT_J:
431 case SND_SOC_DAIFMT_LEFT_J:
434 case SND_SOC_DAIFMT_DSP_A:
437 case SND_SOC_DAIFMT_DSP_B:
444 /* clock inversion */
445 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
446 case SND_SOC_DAIFMT_NB_NF:
448 case SND_SOC_DAIFMT_IB_IF:
451 case SND_SOC_DAIFMT_IB_NF:
454 case SND_SOC_DAIFMT_NB_IF:
462 ssm2602_write(codec, SSM2602_IFACE, iface);
466 static int ssm2602_set_bias_level(struct snd_soc_codec *codec,
467 enum snd_soc_bias_level level)
469 u16 reg = ssm2602_read_reg_cache(codec, SSM2602_PWR) & 0xff7f;
472 case SND_SOC_BIAS_ON:
473 /* vref/mid, osc on, dac unmute */
474 ssm2602_write(codec, SSM2602_PWR, reg);
476 case SND_SOC_BIAS_PREPARE:
478 case SND_SOC_BIAS_STANDBY:
479 /* everything off except vref/vmid, */
480 ssm2602_write(codec, SSM2602_PWR, reg | PWR_CLK_OUT_PDN);
482 case SND_SOC_BIAS_OFF:
483 /* everything off, dac mute, inactive */
484 ssm2602_write(codec, SSM2602_ACTIVE, 0);
485 ssm2602_write(codec, SSM2602_PWR, 0xffff);
489 codec->bias_level = level;
493 #define SSM2602_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
494 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
495 SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
496 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
497 SNDRV_PCM_RATE_96000)
499 struct snd_soc_dai ssm2602_dai = {
502 .stream_name = "Playback",
505 .rates = SSM2602_RATES,
506 .formats = SNDRV_PCM_FMTBIT_S32_LE,},
508 .stream_name = "Capture",
511 .rates = SSM2602_RATES,
512 .formats = SNDRV_PCM_FMTBIT_S32_LE,},
514 .startup = ssm2602_startup,
515 .prepare = ssm2602_pcm_prepare,
516 .hw_params = ssm2602_hw_params,
517 .shutdown = ssm2602_shutdown,
520 .digital_mute = ssm2602_mute,
521 .set_sysclk = ssm2602_set_dai_sysclk,
522 .set_fmt = ssm2602_set_dai_fmt,
525 EXPORT_SYMBOL_GPL(ssm2602_dai);
527 static int ssm2602_suspend(struct platform_device *pdev, pm_message_t state)
529 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
530 struct snd_soc_codec *codec = socdev->codec;
532 ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF);
536 static int ssm2602_resume(struct platform_device *pdev)
538 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
539 struct snd_soc_codec *codec = socdev->codec;
542 u16 *cache = codec->reg_cache;
544 /* Sync reg_cache with the hardware */
545 for (i = 0; i < ARRAY_SIZE(ssm2602_reg); i++) {
546 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
547 data[1] = cache[i] & 0x00ff;
548 codec->hw_write(codec->control_data, data, 2);
550 ssm2602_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
551 ssm2602_set_bias_level(codec, codec->suspend_bias_level);
556 * initialise the ssm2602 driver
557 * register the mixer and dsp interfaces with the kernel
559 static int ssm2602_init(struct snd_soc_device *socdev)
561 struct snd_soc_codec *codec = socdev->codec;
564 codec->name = "SSM2602";
565 codec->owner = THIS_MODULE;
566 codec->read = ssm2602_read_reg_cache;
567 codec->write = ssm2602_write;
568 codec->set_bias_level = ssm2602_set_bias_level;
569 codec->dai = &ssm2602_dai;
571 codec->reg_cache_size = sizeof(ssm2602_reg);
572 codec->reg_cache = kmemdup(ssm2602_reg, sizeof(ssm2602_reg),
574 if (codec->reg_cache == NULL)
577 ssm2602_reset(codec);
580 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
582 pr_err("ssm2602: failed to create pcms\n");
586 ssm2602_write(codec, SSM2602_ACTIVE, 0);
587 /* set the update bits */
588 reg = ssm2602_read_reg_cache(codec, SSM2602_LINVOL);
589 ssm2602_write(codec, SSM2602_LINVOL, reg | LINVOL_LRIN_BOTH);
590 reg = ssm2602_read_reg_cache(codec, SSM2602_RINVOL);
591 ssm2602_write(codec, SSM2602_RINVOL, reg | RINVOL_RLIN_BOTH);
592 reg = ssm2602_read_reg_cache(codec, SSM2602_LOUT1V);
593 ssm2602_write(codec, SSM2602_LOUT1V, reg | LOUT1V_LRHP_BOTH);
594 reg = ssm2602_read_reg_cache(codec, SSM2602_ROUT1V);
595 ssm2602_write(codec, SSM2602_ROUT1V, reg | ROUT1V_RLHP_BOTH);
596 /*select Line in as default input*/
597 ssm2602_write(codec, SSM2602_APANA,
598 APANA_ENABLE_MIC_BOOST2 | APANA_SELECT_DAC |
599 APANA_ENABLE_MIC_BOOST);
600 ssm2602_write(codec, SSM2602_PWR, 0);
602 ssm2602_add_controls(codec);
603 ssm2602_add_widgets(codec);
604 ret = snd_soc_register_card(socdev);
606 pr_err("ssm2602: failed to register card\n");
613 snd_soc_free_pcms(socdev);
614 snd_soc_dapm_free(socdev);
616 kfree(codec->reg_cache);
620 static struct snd_soc_device *ssm2602_socdev;
622 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
624 * ssm2602 2 wire address is determined by GPIO5
625 * state during powerup.
629 static int ssm2602_i2c_probe(struct i2c_client *i2c,
630 const struct i2c_device_id *id)
632 struct snd_soc_device *socdev = ssm2602_socdev;
633 struct snd_soc_codec *codec = socdev->codec;
636 i2c_set_clientdata(i2c, codec);
637 codec->control_data = i2c;
639 ret = ssm2602_init(socdev);
641 pr_err("failed to initialise SSM2602\n");
646 static int ssm2602_i2c_remove(struct i2c_client *client)
648 struct snd_soc_codec *codec = i2c_get_clientdata(client);
649 kfree(codec->reg_cache);
653 static const struct i2c_device_id ssm2602_i2c_id[] = {
657 MODULE_DEVICE_TABLE(i2c, ssm2602_i2c_id);
658 /* corgi i2c codec control layer */
659 static struct i2c_driver ssm2602_i2c_driver = {
661 .name = "SSM2602 I2C Codec",
662 .owner = THIS_MODULE,
664 .probe = ssm2602_i2c_probe,
665 .remove = ssm2602_i2c_remove,
666 .id_table = ssm2602_i2c_id,
669 static int ssm2602_add_i2c_device(struct platform_device *pdev,
670 const struct ssm2602_setup_data *setup)
672 struct i2c_board_info info;
673 struct i2c_adapter *adapter;
674 struct i2c_client *client;
677 ret = i2c_add_driver(&ssm2602_i2c_driver);
679 dev_err(&pdev->dev, "can't add i2c driver\n");
682 memset(&info, 0, sizeof(struct i2c_board_info));
683 info.addr = setup->i2c_address;
684 strlcpy(info.type, "ssm2602", I2C_NAME_SIZE);
685 adapter = i2c_get_adapter(setup->i2c_bus);
687 dev_err(&pdev->dev, "can't get i2c adapter %d\n",
691 client = i2c_new_device(adapter, &info);
692 i2c_put_adapter(adapter);
694 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
695 (unsigned int)info.addr);
700 i2c_del_driver(&ssm2602_i2c_driver);
705 static int ssm2602_probe(struct platform_device *pdev)
707 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
708 struct ssm2602_setup_data *setup;
709 struct snd_soc_codec *codec;
710 struct ssm2602_priv *ssm2602;
713 pr_info("ssm2602 Audio Codec %s", SSM2602_VERSION);
715 setup = socdev->codec_data;
716 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
720 ssm2602 = kzalloc(sizeof(struct ssm2602_priv), GFP_KERNEL);
721 if (ssm2602 == NULL) {
726 codec->private_data = ssm2602;
727 socdev->codec = codec;
728 mutex_init(&codec->mutex);
729 INIT_LIST_HEAD(&codec->dapm_widgets);
730 INIT_LIST_HEAD(&codec->dapm_paths);
732 ssm2602_socdev = socdev;
733 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
734 if (setup->i2c_address) {
735 codec->hw_write = (hw_write_t)i2c_master_send;
736 ret = ssm2602_add_i2c_device(pdev, setup);
739 /* other interfaces */
744 /* remove everything here */
745 static int ssm2602_remove(struct platform_device *pdev)
747 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
748 struct snd_soc_codec *codec = socdev->codec;
750 if (codec->control_data)
751 ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF);
753 snd_soc_free_pcms(socdev);
754 snd_soc_dapm_free(socdev);
755 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
756 i2c_unregister_device(codec->control_data);
757 i2c_del_driver(&ssm2602_i2c_driver);
759 kfree(codec->private_data);
765 struct snd_soc_codec_device soc_codec_dev_ssm2602 = {
766 .probe = ssm2602_probe,
767 .remove = ssm2602_remove,
768 .suspend = ssm2602_suspend,
769 .resume = ssm2602_resume,
771 EXPORT_SYMBOL_GPL(soc_codec_dev_ssm2602);
773 MODULE_DESCRIPTION("ASoC ssm2602 driver");
774 MODULE_AUTHOR("Cliff Cai");
775 MODULE_LICENSE("GPL");