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/spi/spi.h>
36 #include <linux/platform_device.h>
37 #include <linux/slab.h>
38 #include <sound/core.h>
39 #include <sound/pcm.h>
40 #include <sound/pcm_params.h>
41 #include <sound/soc.h>
42 #include <sound/initval.h>
43 #include <sound/tlv.h>
47 #define SSM2602_VERSION "0.1"
54 /* codec private data */
57 enum snd_soc_control_type control_type;
58 struct snd_pcm_substream *master_substream;
59 struct snd_pcm_substream *slave_substream;
61 enum ssm2602_type type;
65 * ssm2602 register cache
66 * We can't read the ssm2602 register space when we are
67 * using 2 wire for device control, so we cache them instead.
68 * There is no point in caching the reset register
70 static const u16 ssm2602_reg[SSM2602_CACHEREGNUM] = {
71 0x0097, 0x0097, 0x0079, 0x0079,
72 0x000a, 0x0008, 0x009f, 0x000a,
76 #define ssm2602_reset(c) snd_soc_write(c, SSM2602_RESET, 0)
78 /*Appending several "None"s just for OSS mixer use*/
79 static const char *ssm2602_input_select[] = {
80 "Line", "Mic", "None", "None", "None",
81 "None", "None", "None",
84 static const char *ssm2602_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
86 static const struct soc_enum ssm2602_enum[] = {
87 SOC_ENUM_SINGLE(SSM2602_APANA, 2, 2, ssm2602_input_select),
88 SOC_ENUM_SINGLE(SSM2602_APDIGI, 1, 4, ssm2602_deemph),
91 static const unsigned int ssm260x_outmix_tlv[] = {
93 0, 47, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 0),
94 48, 127, TLV_DB_SCALE_ITEM(-7400, 100, 0),
97 static const DECLARE_TLV_DB_SCALE(ssm260x_inpga_tlv, -3450, 150, 0);
98 static const DECLARE_TLV_DB_SCALE(ssm260x_sidetone_tlv, -1500, 300, 0);
100 static const struct snd_kcontrol_new ssm260x_snd_controls[] = {
101 SOC_DOUBLE_R_TLV("Capture Volume", SSM2602_LINVOL, SSM2602_RINVOL, 0, 45, 0,
103 SOC_DOUBLE_R("Capture Switch", SSM2602_LINVOL, SSM2602_RINVOL, 7, 1, 1),
105 SOC_SINGLE("ADC High Pass Filter Switch", SSM2602_APDIGI, 0, 1, 1),
106 SOC_SINGLE("Store DC Offset Switch", SSM2602_APDIGI, 4, 1, 0),
108 SOC_ENUM("Playback De-emphasis", ssm2602_enum[1]),
111 static const struct snd_kcontrol_new ssm2602_snd_controls[] = {
112 SOC_DOUBLE_R_TLV("Master Playback Volume", SSM2602_LOUT1V, SSM2602_ROUT1V,
113 0, 127, 0, ssm260x_outmix_tlv),
114 SOC_DOUBLE_R("Master Playback ZC Switch", SSM2602_LOUT1V, SSM2602_ROUT1V,
116 SOC_SINGLE_TLV("Sidetone Playback Volume", SSM2602_APANA, 6, 3, 1,
117 ssm260x_sidetone_tlv),
119 SOC_SINGLE("Mic Boost (+20dB)", SSM2602_APANA, 0, 1, 0),
120 SOC_SINGLE("Mic Boost2 (+20dB)", SSM2602_APANA, 8, 1, 0),
121 SOC_SINGLE("Mic Switch", SSM2602_APANA, 1, 1, 1),
125 static const struct snd_kcontrol_new ssm260x_output_mixer_controls[] = {
126 SOC_DAPM_SINGLE("Line Bypass Switch", SSM2602_APANA, 3, 1, 0),
127 SOC_DAPM_SINGLE("HiFi Playback Switch", SSM2602_APANA, 4, 1, 0),
128 SOC_DAPM_SINGLE("Mic Sidetone Switch", SSM2602_APANA, 5, 1, 0),
132 static const struct snd_kcontrol_new ssm2602_input_mux_controls =
133 SOC_DAPM_ENUM("Input Select", ssm2602_enum[0]);
135 static const struct snd_soc_dapm_widget ssm260x_dapm_widgets[] = {
136 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SSM2602_PWR, 3, 1),
137 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", SSM2602_PWR, 2, 1),
138 SND_SOC_DAPM_PGA("Line Input", SSM2602_PWR, 0, 1, NULL, 0),
140 SND_SOC_DAPM_SUPPLY("Digital Core Power", SSM2602_ACTIVE, 0, 0, NULL, 0),
142 SND_SOC_DAPM_OUTPUT("LOUT"),
143 SND_SOC_DAPM_OUTPUT("ROUT"),
144 SND_SOC_DAPM_INPUT("RLINEIN"),
145 SND_SOC_DAPM_INPUT("LLINEIN"),
148 static const struct snd_soc_dapm_widget ssm2602_dapm_widgets[] = {
149 SND_SOC_DAPM_MIXER("Output Mixer", SSM2602_PWR, 4, 1,
150 ssm260x_output_mixer_controls,
151 ARRAY_SIZE(ssm260x_output_mixer_controls)),
153 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &ssm2602_input_mux_controls),
154 SND_SOC_DAPM_MICBIAS("Mic Bias", SSM2602_PWR, 1, 1),
156 SND_SOC_DAPM_OUTPUT("LHPOUT"),
157 SND_SOC_DAPM_OUTPUT("RHPOUT"),
158 SND_SOC_DAPM_INPUT("MICIN"),
161 static const struct snd_soc_dapm_widget ssm2604_dapm_widgets[] = {
162 SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0,
163 ssm260x_output_mixer_controls,
164 ARRAY_SIZE(ssm260x_output_mixer_controls) - 1), /* Last element is the mic */
167 static const struct snd_soc_dapm_route ssm260x_routes[] = {
168 {"DAC", NULL, "Digital Core Power"},
169 {"ADC", NULL, "Digital Core Power"},
171 {"Output Mixer", "Line Bypass Switch", "Line Input"},
172 {"Output Mixer", "HiFi Playback Switch", "DAC"},
174 {"ROUT", NULL, "Output Mixer"},
175 {"LOUT", NULL, "Output Mixer"},
177 {"Line Input", NULL, "LLINEIN"},
178 {"Line Input", NULL, "RLINEIN"},
181 static const struct snd_soc_dapm_route ssm2602_routes[] = {
182 {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"},
184 {"RHPOUT", NULL, "Output Mixer"},
185 {"LHPOUT", NULL, "Output Mixer"},
187 {"Input Mux", "Line", "Line Input"},
188 {"Input Mux", "Mic", "Mic Bias"},
189 {"ADC", NULL, "Input Mux"},
191 {"Mic Bias", NULL, "MICIN"},
194 static const struct snd_soc_dapm_route ssm2604_routes[] = {
195 {"ADC", NULL, "Line Input"},
198 struct ssm2602_coeff {
204 #define SSM2602_COEFF_SRATE(sr, bosr, usb) (((sr) << 2) | ((bosr) << 1) | (usb))
206 /* codec mclk clock coefficients */
207 static const struct ssm2602_coeff ssm2602_coeff_table[] = {
209 {12288000, 48000, SSM2602_COEFF_SRATE(0x0, 0x0, 0x0)},
210 {18432000, 48000, SSM2602_COEFF_SRATE(0x0, 0x1, 0x0)},
211 {12000000, 48000, SSM2602_COEFF_SRATE(0x0, 0x0, 0x1)},
214 {12288000, 32000, SSM2602_COEFF_SRATE(0x6, 0x0, 0x0)},
215 {18432000, 32000, SSM2602_COEFF_SRATE(0x6, 0x1, 0x0)},
216 {12000000, 32000, SSM2602_COEFF_SRATE(0x6, 0x0, 0x1)},
219 {12288000, 8000, SSM2602_COEFF_SRATE(0x3, 0x0, 0x0)},
220 {18432000, 8000, SSM2602_COEFF_SRATE(0x3, 0x1, 0x0)},
221 {11289600, 8000, SSM2602_COEFF_SRATE(0xb, 0x0, 0x0)},
222 {16934400, 8000, SSM2602_COEFF_SRATE(0xb, 0x1, 0x0)},
223 {12000000, 8000, SSM2602_COEFF_SRATE(0x3, 0x0, 0x1)},
226 {12288000, 96000, SSM2602_COEFF_SRATE(0x7, 0x0, 0x0)},
227 {18432000, 96000, SSM2602_COEFF_SRATE(0x7, 0x1, 0x0)},
228 {12000000, 96000, SSM2602_COEFF_SRATE(0x7, 0x0, 0x1)},
231 {11289600, 44100, SSM2602_COEFF_SRATE(0x8, 0x0, 0x0)},
232 {16934400, 44100, SSM2602_COEFF_SRATE(0x8, 0x1, 0x0)},
233 {12000000, 44100, SSM2602_COEFF_SRATE(0x8, 0x1, 0x1)},
236 {11289600, 88200, SSM2602_COEFF_SRATE(0xf, 0x0, 0x0)},
237 {16934400, 88200, SSM2602_COEFF_SRATE(0xf, 0x1, 0x0)},
238 {12000000, 88200, SSM2602_COEFF_SRATE(0xf, 0x1, 0x1)},
241 static inline int ssm2602_get_coeff(int mclk, int rate)
245 for (i = 0; i < ARRAY_SIZE(ssm2602_coeff_table); i++) {
246 if (ssm2602_coeff_table[i].rate == rate &&
247 ssm2602_coeff_table[i].mclk == mclk)
248 return ssm2602_coeff_table[i].srate;
253 static int ssm2602_hw_params(struct snd_pcm_substream *substream,
254 struct snd_pcm_hw_params *params,
255 struct snd_soc_dai *dai)
257 struct snd_soc_pcm_runtime *rtd = substream->private_data;
258 struct snd_soc_codec *codec = rtd->codec;
259 struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
260 u16 iface = snd_soc_read(codec, SSM2602_IFACE) & 0xfff3;
261 int srate = ssm2602_get_coeff(ssm2602->sysclk, params_rate(params));
263 if (substream == ssm2602->slave_substream) {
264 dev_dbg(codec->dev, "Ignoring hw_params for slave substream\n");
271 snd_soc_write(codec, SSM2602_SRATE, srate);
274 switch (params_format(params)) {
275 case SNDRV_PCM_FORMAT_S16_LE:
277 case SNDRV_PCM_FORMAT_S20_3LE:
280 case SNDRV_PCM_FORMAT_S24_LE:
283 case SNDRV_PCM_FORMAT_S32_LE:
287 snd_soc_write(codec, SSM2602_IFACE, iface);
291 static int ssm2602_startup(struct snd_pcm_substream *substream,
292 struct snd_soc_dai *dai)
294 struct snd_soc_pcm_runtime *rtd = substream->private_data;
295 struct snd_soc_codec *codec = rtd->codec;
296 struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
297 struct i2c_client *i2c = codec->control_data;
298 struct snd_pcm_runtime *master_runtime;
300 /* The DAI has shared clocks so if we already have a playback or
301 * capture going then constrain this substream to match it.
302 * TODO: the ssm2602 allows pairs of non-matching PB/REC rates
304 if (ssm2602->master_substream) {
305 master_runtime = ssm2602->master_substream->runtime;
306 dev_dbg(&i2c->dev, "Constraining to %d bits at %dHz\n",
307 master_runtime->sample_bits,
308 master_runtime->rate);
310 if (master_runtime->rate != 0)
311 snd_pcm_hw_constraint_minmax(substream->runtime,
312 SNDRV_PCM_HW_PARAM_RATE,
313 master_runtime->rate,
314 master_runtime->rate);
316 if (master_runtime->sample_bits != 0)
317 snd_pcm_hw_constraint_minmax(substream->runtime,
318 SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
319 master_runtime->sample_bits,
320 master_runtime->sample_bits);
322 ssm2602->slave_substream = substream;
324 ssm2602->master_substream = substream;
329 static void ssm2602_shutdown(struct snd_pcm_substream *substream,
330 struct snd_soc_dai *dai)
332 struct snd_soc_pcm_runtime *rtd = substream->private_data;
333 struct snd_soc_codec *codec = rtd->codec;
334 struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
336 if (ssm2602->master_substream == substream)
337 ssm2602->master_substream = ssm2602->slave_substream;
339 ssm2602->slave_substream = NULL;
343 static int ssm2602_mute(struct snd_soc_dai *dai, int mute)
345 struct snd_soc_codec *codec = dai->codec;
346 u16 mute_reg = snd_soc_read(codec, SSM2602_APDIGI) & ~APDIGI_ENABLE_DAC_MUTE;
348 snd_soc_write(codec, SSM2602_APDIGI,
349 mute_reg | APDIGI_ENABLE_DAC_MUTE);
351 snd_soc_write(codec, SSM2602_APDIGI, mute_reg);
355 static int ssm2602_set_dai_sysclk(struct snd_soc_dai *codec_dai,
356 int clk_id, unsigned int freq, int dir)
358 struct snd_soc_codec *codec = codec_dai->codec;
359 struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
366 ssm2602->sysclk = freq;
372 static int ssm2602_set_dai_fmt(struct snd_soc_dai *codec_dai,
375 struct snd_soc_codec *codec = codec_dai->codec;
378 /* set master/slave audio interface */
379 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
380 case SND_SOC_DAIFMT_CBM_CFM:
383 case SND_SOC_DAIFMT_CBS_CFS:
389 /* interface format */
390 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
391 case SND_SOC_DAIFMT_I2S:
394 case SND_SOC_DAIFMT_RIGHT_J:
396 case SND_SOC_DAIFMT_LEFT_J:
399 case SND_SOC_DAIFMT_DSP_A:
402 case SND_SOC_DAIFMT_DSP_B:
409 /* clock inversion */
410 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
411 case SND_SOC_DAIFMT_NB_NF:
413 case SND_SOC_DAIFMT_IB_IF:
416 case SND_SOC_DAIFMT_IB_NF:
419 case SND_SOC_DAIFMT_NB_IF:
427 snd_soc_write(codec, SSM2602_IFACE, iface);
431 static int ssm2602_set_bias_level(struct snd_soc_codec *codec,
432 enum snd_soc_bias_level level)
434 u16 reg = snd_soc_read(codec, SSM2602_PWR);
435 reg &= ~(PWR_POWER_OFF | PWR_OSC_PDN);
438 case SND_SOC_BIAS_ON:
439 /* vref/mid, osc on, dac unmute */
440 snd_soc_write(codec, SSM2602_PWR, reg);
442 case SND_SOC_BIAS_PREPARE:
444 case SND_SOC_BIAS_STANDBY:
445 /* everything off except vref/vmid, */
446 snd_soc_write(codec, SSM2602_PWR, reg | PWR_CLK_OUT_PDN);
448 case SND_SOC_BIAS_OFF:
449 /* everything off, dac mute, inactive */
450 snd_soc_write(codec, SSM2602_PWR, 0xffff);
454 codec->dapm.bias_level = level;
458 #define SSM2602_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_32000 |\
459 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
460 SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
462 #define SSM2602_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
463 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
465 static struct snd_soc_dai_ops ssm2602_dai_ops = {
466 .startup = ssm2602_startup,
467 .hw_params = ssm2602_hw_params,
468 .shutdown = ssm2602_shutdown,
469 .digital_mute = ssm2602_mute,
470 .set_sysclk = ssm2602_set_dai_sysclk,
471 .set_fmt = ssm2602_set_dai_fmt,
474 static struct snd_soc_dai_driver ssm2602_dai = {
475 .name = "ssm2602-hifi",
477 .stream_name = "Playback",
480 .rates = SSM2602_RATES,
481 .formats = SSM2602_FORMATS,},
483 .stream_name = "Capture",
486 .rates = SSM2602_RATES,
487 .formats = SSM2602_FORMATS,},
488 .ops = &ssm2602_dai_ops,
491 static int ssm2602_suspend(struct snd_soc_codec *codec, pm_message_t state)
493 ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF);
497 static int ssm2602_resume(struct snd_soc_codec *codec)
499 snd_soc_cache_sync(codec);
501 ssm2602_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
506 static int ssm2602_probe(struct snd_soc_codec *codec)
508 struct snd_soc_dapm_context *dapm = &codec->dapm;
511 reg = snd_soc_read(codec, SSM2602_LOUT1V);
512 snd_soc_write(codec, SSM2602_LOUT1V, reg | LOUT1V_LRHP_BOTH);
513 reg = snd_soc_read(codec, SSM2602_ROUT1V);
514 snd_soc_write(codec, SSM2602_ROUT1V, reg | ROUT1V_RLHP_BOTH);
516 ret = snd_soc_add_controls(codec, ssm2602_snd_controls,
517 ARRAY_SIZE(ssm2602_snd_controls));
521 ret = snd_soc_dapm_new_controls(dapm, ssm2602_dapm_widgets,
522 ARRAY_SIZE(ssm2602_dapm_widgets));
526 return snd_soc_dapm_add_routes(dapm, ssm2602_routes,
527 ARRAY_SIZE(ssm2602_routes));
530 static int ssm2604_probe(struct snd_soc_codec *codec)
532 struct snd_soc_dapm_context *dapm = &codec->dapm;
535 ret = snd_soc_dapm_new_controls(dapm, ssm2604_dapm_widgets,
536 ARRAY_SIZE(ssm2604_dapm_widgets));
540 return snd_soc_dapm_add_routes(dapm, ssm2604_routes,
541 ARRAY_SIZE(ssm2604_routes));
544 static int ssm260x_probe(struct snd_soc_codec *codec)
546 struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
549 pr_info("ssm2602 Audio Codec %s", SSM2602_VERSION);
551 ret = snd_soc_codec_set_cache_io(codec, 7, 9, ssm2602->control_type);
553 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
557 ret = ssm2602_reset(codec);
559 dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
563 /* set the update bits */
564 reg = snd_soc_read(codec, SSM2602_LINVOL);
565 snd_soc_write(codec, SSM2602_LINVOL, reg | LINVOL_LRIN_BOTH);
566 reg = snd_soc_read(codec, SSM2602_RINVOL);
567 snd_soc_write(codec, SSM2602_RINVOL, reg | RINVOL_RLIN_BOTH);
568 /*select Line in as default input*/
569 snd_soc_write(codec, SSM2602_APANA, APANA_SELECT_DAC |
570 APANA_ENABLE_MIC_BOOST);
572 switch (ssm2602->type) {
574 ret = ssm2602_probe(codec);
577 ret = ssm2604_probe(codec);
584 /* remove everything here */
585 static int ssm2602_remove(struct snd_soc_codec *codec)
587 ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF);
591 static struct snd_soc_codec_driver soc_codec_dev_ssm2602 = {
592 .probe = ssm260x_probe,
593 .remove = ssm2602_remove,
594 .suspend = ssm2602_suspend,
595 .resume = ssm2602_resume,
596 .set_bias_level = ssm2602_set_bias_level,
597 .reg_cache_size = ARRAY_SIZE(ssm2602_reg),
598 .reg_word_size = sizeof(u16),
599 .reg_cache_default = ssm2602_reg,
601 .controls = ssm260x_snd_controls,
602 .num_controls = ARRAY_SIZE(ssm260x_snd_controls),
603 .dapm_widgets = ssm260x_dapm_widgets,
604 .num_dapm_widgets = ARRAY_SIZE(ssm260x_dapm_widgets),
605 .dapm_routes = ssm260x_routes,
606 .num_dapm_routes = ARRAY_SIZE(ssm260x_routes),
609 #if defined(CONFIG_SPI_MASTER)
610 static int __devinit ssm2602_spi_probe(struct spi_device *spi)
612 struct ssm2602_priv *ssm2602;
615 ssm2602 = kzalloc(sizeof(struct ssm2602_priv), GFP_KERNEL);
619 spi_set_drvdata(spi, ssm2602);
620 ssm2602->control_type = SND_SOC_SPI;
621 ssm2602->type = SSM2602;
623 ret = snd_soc_register_codec(&spi->dev,
624 &soc_codec_dev_ssm2602, &ssm2602_dai, 1);
630 static int __devexit ssm2602_spi_remove(struct spi_device *spi)
632 snd_soc_unregister_codec(&spi->dev);
633 kfree(spi_get_drvdata(spi));
637 static struct spi_driver ssm2602_spi_driver = {
640 .owner = THIS_MODULE,
642 .probe = ssm2602_spi_probe,
643 .remove = __devexit_p(ssm2602_spi_remove),
647 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
649 * ssm2602 2 wire address is determined by GPIO5
650 * state during powerup.
654 static int __devinit ssm2602_i2c_probe(struct i2c_client *i2c,
655 const struct i2c_device_id *id)
657 struct ssm2602_priv *ssm2602;
660 ssm2602 = kzalloc(sizeof(struct ssm2602_priv), GFP_KERNEL);
664 i2c_set_clientdata(i2c, ssm2602);
665 ssm2602->control_type = SND_SOC_I2C;
666 ssm2602->type = id->driver_data;
668 ret = snd_soc_register_codec(&i2c->dev,
669 &soc_codec_dev_ssm2602, &ssm2602_dai, 1);
675 static int __devexit ssm2602_i2c_remove(struct i2c_client *client)
677 snd_soc_unregister_codec(&client->dev);
678 kfree(i2c_get_clientdata(client));
682 static const struct i2c_device_id ssm2602_i2c_id[] = {
683 { "ssm2602", SSM2602 },
684 { "ssm2603", SSM2602 },
685 { "ssm2604", SSM2604 },
688 MODULE_DEVICE_TABLE(i2c, ssm2602_i2c_id);
690 /* corgi i2c codec control layer */
691 static struct i2c_driver ssm2602_i2c_driver = {
694 .owner = THIS_MODULE,
696 .probe = ssm2602_i2c_probe,
697 .remove = __devexit_p(ssm2602_i2c_remove),
698 .id_table = ssm2602_i2c_id,
703 static int __init ssm2602_modinit(void)
707 #if defined(CONFIG_SPI_MASTER)
708 ret = spi_register_driver(&ssm2602_spi_driver);
713 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
714 ret = i2c_add_driver(&ssm2602_i2c_driver);
721 module_init(ssm2602_modinit);
723 static void __exit ssm2602_exit(void)
725 #if defined(CONFIG_SPI_MASTER)
726 spi_unregister_driver(&ssm2602_spi_driver);
729 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
730 i2c_del_driver(&ssm2602_i2c_driver);
733 module_exit(ssm2602_exit);
735 MODULE_DESCRIPTION("ASoC SSM2602/SSM2603/SSM2604 driver");
736 MODULE_AUTHOR("Cliff Cai");
737 MODULE_LICENSE("GPL");