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29#include <linux/module.h>
30#include <linux/moduleparam.h>
31#include <linux/init.h>
32#include <linux/delay.h>
33#include <linux/pm.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>
44
45#include "ssm2602.h"
46
47#define SSM2602_VERSION "0.1"
48
49enum ssm2602_type {
50 SSM2602,
51 SSM2604,
52};
53
54
55struct ssm2602_priv {
56 unsigned int sysclk;
57 enum snd_soc_control_type control_type;
58 struct snd_pcm_substream *master_substream;
59 struct snd_pcm_substream *slave_substream;
60
61 enum ssm2602_type type;
62};
63
64
65
66
67
68
69
70static const u16 ssm2602_reg[SSM2602_CACHEREGNUM] = {
71 0x0097, 0x0097, 0x0079, 0x0079,
72 0x000a, 0x0008, 0x009f, 0x000a,
73 0x0000, 0x0000
74};
75
76#define ssm2602_reset(c) snd_soc_write(c, SSM2602_RESET, 0)
77
78
79static const char *ssm2602_input_select[] = {
80 "Line", "Mic", "None", "None", "None",
81 "None", "None", "None",
82};
83
84static const char *ssm2602_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
85
86static 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),
89};
90
91static const unsigned int ssm260x_outmix_tlv[] = {
92 TLV_DB_RANGE_HEAD(2),
93 0, 47, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 0),
94 48, 127, TLV_DB_SCALE_ITEM(-7400, 100, 0),
95};
96
97static const DECLARE_TLV_DB_SCALE(ssm260x_inpga_tlv, -3450, 150, 0);
98static const DECLARE_TLV_DB_SCALE(ssm260x_sidetone_tlv, -1500, 300, 0);
99
100static const struct snd_kcontrol_new ssm260x_snd_controls[] = {
101SOC_DOUBLE_R_TLV("Capture Volume", SSM2602_LINVOL, SSM2602_RINVOL, 0, 45, 0,
102 ssm260x_inpga_tlv),
103SOC_DOUBLE_R("Capture Switch", SSM2602_LINVOL, SSM2602_RINVOL, 7, 1, 1),
104
105SOC_SINGLE("ADC High Pass Filter Switch", SSM2602_APDIGI, 0, 1, 1),
106SOC_SINGLE("Store DC Offset Switch", SSM2602_APDIGI, 4, 1, 0),
107
108SOC_ENUM("Playback De-emphasis", ssm2602_enum[1]),
109};
110
111static const struct snd_kcontrol_new ssm2602_snd_controls[] = {
112SOC_DOUBLE_R_TLV("Master Playback Volume", SSM2602_LOUT1V, SSM2602_ROUT1V,
113 0, 127, 0, ssm260x_outmix_tlv),
114SOC_DOUBLE_R("Master Playback ZC Switch", SSM2602_LOUT1V, SSM2602_ROUT1V,
115 7, 1, 0),
116SOC_SINGLE_TLV("Sidetone Playback Volume", SSM2602_APANA, 6, 3, 1,
117 ssm260x_sidetone_tlv),
118
119SOC_SINGLE("Mic Boost (+20dB)", SSM2602_APANA, 0, 1, 0),
120SOC_SINGLE("Mic Boost2 (+20dB)", SSM2602_APANA, 8, 1, 0),
121SOC_SINGLE("Mic Switch", SSM2602_APANA, 1, 1, 1),
122};
123
124
125static const struct snd_kcontrol_new ssm260x_output_mixer_controls[] = {
126SOC_DAPM_SINGLE("Line Bypass Switch", SSM2602_APANA, 3, 1, 0),
127SOC_DAPM_SINGLE("HiFi Playback Switch", SSM2602_APANA, 4, 1, 0),
128SOC_DAPM_SINGLE("Mic Sidetone Switch", SSM2602_APANA, 5, 1, 0),
129};
130
131
132static const struct snd_kcontrol_new ssm2602_input_mux_controls =
133SOC_DAPM_ENUM("Input Select", ssm2602_enum[0]);
134
135static const struct snd_soc_dapm_widget ssm260x_dapm_widgets[] = {
136SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SSM2602_PWR, 3, 1),
137SND_SOC_DAPM_ADC("ADC", "HiFi Capture", SSM2602_PWR, 2, 1),
138SND_SOC_DAPM_PGA("Line Input", SSM2602_PWR, 0, 1, NULL, 0),
139
140SND_SOC_DAPM_SUPPLY("Digital Core Power", SSM2602_ACTIVE, 0, 0, NULL, 0),
141
142SND_SOC_DAPM_OUTPUT("LOUT"),
143SND_SOC_DAPM_OUTPUT("ROUT"),
144SND_SOC_DAPM_INPUT("RLINEIN"),
145SND_SOC_DAPM_INPUT("LLINEIN"),
146};
147
148static const struct snd_soc_dapm_widget ssm2602_dapm_widgets[] = {
149SND_SOC_DAPM_MIXER("Output Mixer", SSM2602_PWR, 4, 1,
150 ssm260x_output_mixer_controls,
151 ARRAY_SIZE(ssm260x_output_mixer_controls)),
152
153SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &ssm2602_input_mux_controls),
154SND_SOC_DAPM_MICBIAS("Mic Bias", SSM2602_PWR, 1, 1),
155
156SND_SOC_DAPM_OUTPUT("LHPOUT"),
157SND_SOC_DAPM_OUTPUT("RHPOUT"),
158SND_SOC_DAPM_INPUT("MICIN"),
159};
160
161static const struct snd_soc_dapm_widget ssm2604_dapm_widgets[] = {
162SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0,
163 ssm260x_output_mixer_controls,
164 ARRAY_SIZE(ssm260x_output_mixer_controls) - 1),
165};
166
167static const struct snd_soc_dapm_route ssm260x_routes[] = {
168 {"DAC", NULL, "Digital Core Power"},
169 {"ADC", NULL, "Digital Core Power"},
170
171 {"Output Mixer", "Line Bypass Switch", "Line Input"},
172 {"Output Mixer", "HiFi Playback Switch", "DAC"},
173
174 {"ROUT", NULL, "Output Mixer"},
175 {"LOUT", NULL, "Output Mixer"},
176
177 {"Line Input", NULL, "LLINEIN"},
178 {"Line Input", NULL, "RLINEIN"},
179};
180
181static const struct snd_soc_dapm_route ssm2602_routes[] = {
182 {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"},
183
184 {"RHPOUT", NULL, "Output Mixer"},
185 {"LHPOUT", NULL, "Output Mixer"},
186
187 {"Input Mux", "Line", "Line Input"},
188 {"Input Mux", "Mic", "Mic Bias"},
189 {"ADC", NULL, "Input Mux"},
190
191 {"Mic Bias", NULL, "MICIN"},
192};
193
194static const struct snd_soc_dapm_route ssm2604_routes[] = {
195 {"ADC", NULL, "Line Input"},
196};
197
198struct ssm2602_coeff {
199 u32 mclk;
200 u32 rate;
201 u8 srate;
202};
203
204#define SSM2602_COEFF_SRATE(sr, bosr, usb) (((sr) << 2) | ((bosr) << 1) | (usb))
205
206
207static const struct ssm2602_coeff ssm2602_coeff_table[] = {
208
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)},
212
213
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)},
217
218
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)},
224
225
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)},
229
230
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)},
234
235
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)},
239};
240
241static inline int ssm2602_get_coeff(int mclk, int rate)
242{
243 int i;
244
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;
249 }
250 return -EINVAL;
251}
252
253static int ssm2602_hw_params(struct snd_pcm_substream *substream,
254 struct snd_pcm_hw_params *params,
255 struct snd_soc_dai *dai)
256{
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));
262
263 if (substream == ssm2602->slave_substream) {
264 dev_dbg(codec->dev, "Ignoring hw_params for slave substream\n");
265 return 0;
266 }
267
268 if (srate < 0)
269 return srate;
270
271 snd_soc_write(codec, SSM2602_SRATE, srate);
272
273
274 switch (params_format(params)) {
275 case SNDRV_PCM_FORMAT_S16_LE:
276 break;
277 case SNDRV_PCM_FORMAT_S20_3LE:
278 iface |= 0x0004;
279 break;
280 case SNDRV_PCM_FORMAT_S24_LE:
281 iface |= 0x0008;
282 break;
283 case SNDRV_PCM_FORMAT_S32_LE:
284 iface |= 0x000c;
285 break;
286 }
287 snd_soc_write(codec, SSM2602_IFACE, iface);
288 return 0;
289}
290
291static int ssm2602_startup(struct snd_pcm_substream *substream,
292 struct snd_soc_dai *dai)
293{
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;
299
300
301
302
303
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);
309
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);
315
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);
321
322 ssm2602->slave_substream = substream;
323 } else
324 ssm2602->master_substream = substream;
325
326 return 0;
327}
328
329static void ssm2602_shutdown(struct snd_pcm_substream *substream,
330 struct snd_soc_dai *dai)
331{
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);
335
336 if (ssm2602->master_substream == substream)
337 ssm2602->master_substream = ssm2602->slave_substream;
338
339 ssm2602->slave_substream = NULL;
340}
341
342
343static int ssm2602_mute(struct snd_soc_dai *dai, int mute)
344{
345 struct snd_soc_codec *codec = dai->codec;
346 u16 mute_reg = snd_soc_read(codec, SSM2602_APDIGI) & ~APDIGI_ENABLE_DAC_MUTE;
347 if (mute)
348 snd_soc_write(codec, SSM2602_APDIGI,
349 mute_reg | APDIGI_ENABLE_DAC_MUTE);
350 else
351 snd_soc_write(codec, SSM2602_APDIGI, mute_reg);
352 return 0;
353}
354
355static int ssm2602_set_dai_sysclk(struct snd_soc_dai *codec_dai,
356 int clk_id, unsigned int freq, int dir)
357{
358 struct snd_soc_codec *codec = codec_dai->codec;
359 struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
360 switch (freq) {
361 case 11289600:
362 case 12000000:
363 case 12288000:
364 case 16934400:
365 case 18432000:
366 ssm2602->sysclk = freq;
367 return 0;
368 }
369 return -EINVAL;
370}
371
372static int ssm2602_set_dai_fmt(struct snd_soc_dai *codec_dai,
373 unsigned int fmt)
374{
375 struct snd_soc_codec *codec = codec_dai->codec;
376 u16 iface = 0;
377
378
379 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
380 case SND_SOC_DAIFMT_CBM_CFM:
381 iface |= 0x0040;
382 break;
383 case SND_SOC_DAIFMT_CBS_CFS:
384 break;
385 default:
386 return -EINVAL;
387 }
388
389
390 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
391 case SND_SOC_DAIFMT_I2S:
392 iface |= 0x0002;
393 break;
394 case SND_SOC_DAIFMT_RIGHT_J:
395 break;
396 case SND_SOC_DAIFMT_LEFT_J:
397 iface |= 0x0001;
398 break;
399 case SND_SOC_DAIFMT_DSP_A:
400 iface |= 0x0013;
401 break;
402 case SND_SOC_DAIFMT_DSP_B:
403 iface |= 0x0003;
404 break;
405 default:
406 return -EINVAL;
407 }
408
409
410 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
411 case SND_SOC_DAIFMT_NB_NF:
412 break;
413 case SND_SOC_DAIFMT_IB_IF:
414 iface |= 0x0090;
415 break;
416 case SND_SOC_DAIFMT_IB_NF:
417 iface |= 0x0080;
418 break;
419 case SND_SOC_DAIFMT_NB_IF:
420 iface |= 0x0010;
421 break;
422 default:
423 return -EINVAL;
424 }
425
426
427 snd_soc_write(codec, SSM2602_IFACE, iface);
428 return 0;
429}
430
431static int ssm2602_set_bias_level(struct snd_soc_codec *codec,
432 enum snd_soc_bias_level level)
433{
434 u16 reg = snd_soc_read(codec, SSM2602_PWR) & 0xff7f;
435
436 switch (level) {
437 case SND_SOC_BIAS_ON:
438
439 snd_soc_write(codec, SSM2602_PWR, reg);
440 break;
441 case SND_SOC_BIAS_PREPARE:
442 break;
443 case SND_SOC_BIAS_STANDBY:
444
445 snd_soc_write(codec, SSM2602_PWR, reg | PWR_CLK_OUT_PDN);
446 break;
447 case SND_SOC_BIAS_OFF:
448
449 snd_soc_write(codec, SSM2602_PWR, 0xffff);
450 break;
451
452 }
453 codec->dapm.bias_level = level;
454 return 0;
455}
456
457#define SSM2602_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_32000 |\
458 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
459 SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
460
461#define SSM2602_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
462 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
463
464static struct snd_soc_dai_ops ssm2602_dai_ops = {
465 .startup = ssm2602_startup,
466 .hw_params = ssm2602_hw_params,
467 .shutdown = ssm2602_shutdown,
468 .digital_mute = ssm2602_mute,
469 .set_sysclk = ssm2602_set_dai_sysclk,
470 .set_fmt = ssm2602_set_dai_fmt,
471};
472
473static struct snd_soc_dai_driver ssm2602_dai = {
474 .name = "ssm2602-hifi",
475 .playback = {
476 .stream_name = "Playback",
477 .channels_min = 2,
478 .channels_max = 2,
479 .rates = SSM2602_RATES,
480 .formats = SSM2602_FORMATS,},
481 .capture = {
482 .stream_name = "Capture",
483 .channels_min = 2,
484 .channels_max = 2,
485 .rates = SSM2602_RATES,
486 .formats = SSM2602_FORMATS,},
487 .ops = &ssm2602_dai_ops,
488};
489
490static int ssm2602_suspend(struct snd_soc_codec *codec, pm_message_t state)
491{
492 ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF);
493 return 0;
494}
495
496static int ssm2602_resume(struct snd_soc_codec *codec)
497{
498 snd_soc_cache_sync(codec);
499
500 ssm2602_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
501
502 return 0;
503}
504
505static int ssm2602_probe(struct snd_soc_codec *codec)
506{
507 struct snd_soc_dapm_context *dapm = &codec->dapm;
508 int ret, reg;
509
510 reg = snd_soc_read(codec, SSM2602_LOUT1V);
511 snd_soc_write(codec, SSM2602_LOUT1V, reg | LOUT1V_LRHP_BOTH);
512 reg = snd_soc_read(codec, SSM2602_ROUT1V);
513 snd_soc_write(codec, SSM2602_ROUT1V, reg | ROUT1V_RLHP_BOTH);
514
515 ret = snd_soc_add_controls(codec, ssm2602_snd_controls,
516 ARRAY_SIZE(ssm2602_snd_controls));
517 if (ret)
518 return ret;
519
520 ret = snd_soc_dapm_new_controls(dapm, ssm2602_dapm_widgets,
521 ARRAY_SIZE(ssm2602_dapm_widgets));
522 if (ret)
523 return ret;
524
525 return snd_soc_dapm_add_routes(dapm, ssm2602_routes,
526 ARRAY_SIZE(ssm2602_routes));
527}
528
529static int ssm2604_probe(struct snd_soc_codec *codec)
530{
531 struct snd_soc_dapm_context *dapm = &codec->dapm;
532 int ret;
533
534 ret = snd_soc_dapm_new_controls(dapm, ssm2604_dapm_widgets,
535 ARRAY_SIZE(ssm2604_dapm_widgets));
536 if (ret)
537 return ret;
538
539 return snd_soc_dapm_add_routes(dapm, ssm2604_routes,
540 ARRAY_SIZE(ssm2604_routes));
541}
542
543static int ssm260x_probe(struct snd_soc_codec *codec)
544{
545 struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
546 int ret, reg;
547
548 pr_info("ssm2602 Audio Codec %s", SSM2602_VERSION);
549
550 ret = snd_soc_codec_set_cache_io(codec, 7, 9, ssm2602->control_type);
551 if (ret < 0) {
552 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
553 return ret;
554 }
555
556 ret = ssm2602_reset(codec);
557 if (ret < 0) {
558 dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
559 return ret;
560 }
561
562
563 reg = snd_soc_read(codec, SSM2602_LINVOL);
564 snd_soc_write(codec, SSM2602_LINVOL, reg | LINVOL_LRIN_BOTH);
565 reg = snd_soc_read(codec, SSM2602_RINVOL);
566 snd_soc_write(codec, SSM2602_RINVOL, reg | RINVOL_RLIN_BOTH);
567
568 snd_soc_write(codec, SSM2602_APANA, APANA_SELECT_DAC |
569 APANA_ENABLE_MIC_BOOST);
570
571 switch (ssm2602->type) {
572 case SSM2602:
573 ret = ssm2602_probe(codec);
574 break;
575 case SSM2604:
576 ret = ssm2604_probe(codec);
577 break;
578 }
579
580 return ret;
581}
582
583
584static int ssm2602_remove(struct snd_soc_codec *codec)
585{
586 ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF);
587 return 0;
588}
589
590static struct snd_soc_codec_driver soc_codec_dev_ssm2602 = {
591 .probe = ssm260x_probe,
592 .remove = ssm2602_remove,
593 .suspend = ssm2602_suspend,
594 .resume = ssm2602_resume,
595 .set_bias_level = ssm2602_set_bias_level,
596 .reg_cache_size = ARRAY_SIZE(ssm2602_reg),
597 .reg_word_size = sizeof(u16),
598 .reg_cache_default = ssm2602_reg,
599
600 .controls = ssm260x_snd_controls,
601 .num_controls = ARRAY_SIZE(ssm260x_snd_controls),
602 .dapm_widgets = ssm260x_dapm_widgets,
603 .num_dapm_widgets = ARRAY_SIZE(ssm260x_dapm_widgets),
604 .dapm_routes = ssm260x_routes,
605 .num_dapm_routes = ARRAY_SIZE(ssm260x_routes),
606};
607
608#if defined(CONFIG_SPI_MASTER)
609static int __devinit ssm2602_spi_probe(struct spi_device *spi)
610{
611 struct ssm2602_priv *ssm2602;
612 int ret;
613
614 ssm2602 = kzalloc(sizeof(struct ssm2602_priv), GFP_KERNEL);
615 if (ssm2602 == NULL)
616 return -ENOMEM;
617
618 spi_set_drvdata(spi, ssm2602);
619 ssm2602->control_type = SND_SOC_SPI;
620 ssm2602->type = SSM2602;
621
622 ret = snd_soc_register_codec(&spi->dev,
623 &soc_codec_dev_ssm2602, &ssm2602_dai, 1);
624 if (ret < 0)
625 kfree(ssm2602);
626 return ret;
627}
628
629static int __devexit ssm2602_spi_remove(struct spi_device *spi)
630{
631 snd_soc_unregister_codec(&spi->dev);
632 kfree(spi_get_drvdata(spi));
633 return 0;
634}
635
636static struct spi_driver ssm2602_spi_driver = {
637 .driver = {
638 .name = "ssm2602",
639 .owner = THIS_MODULE,
640 },
641 .probe = ssm2602_spi_probe,
642 .remove = __devexit_p(ssm2602_spi_remove),
643};
644#endif
645
646#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
647
648
649
650
651
652
653static int __devinit ssm2602_i2c_probe(struct i2c_client *i2c,
654 const struct i2c_device_id *id)
655{
656 struct ssm2602_priv *ssm2602;
657 int ret;
658
659 ssm2602 = kzalloc(sizeof(struct ssm2602_priv), GFP_KERNEL);
660 if (ssm2602 == NULL)
661 return -ENOMEM;
662
663 i2c_set_clientdata(i2c, ssm2602);
664 ssm2602->control_type = SND_SOC_I2C;
665 ssm2602->type = id->driver_data;
666
667 ret = snd_soc_register_codec(&i2c->dev,
668 &soc_codec_dev_ssm2602, &ssm2602_dai, 1);
669 if (ret < 0)
670 kfree(ssm2602);
671 return ret;
672}
673
674static int __devexit ssm2602_i2c_remove(struct i2c_client *client)
675{
676 snd_soc_unregister_codec(&client->dev);
677 kfree(i2c_get_clientdata(client));
678 return 0;
679}
680
681static const struct i2c_device_id ssm2602_i2c_id[] = {
682 { "ssm2602", SSM2602 },
683 { "ssm2603", SSM2602 },
684 { "ssm2604", SSM2604 },
685 { }
686};
687MODULE_DEVICE_TABLE(i2c, ssm2602_i2c_id);
688
689
690static struct i2c_driver ssm2602_i2c_driver = {
691 .driver = {
692 .name = "ssm2602",
693 .owner = THIS_MODULE,
694 },
695 .probe = ssm2602_i2c_probe,
696 .remove = __devexit_p(ssm2602_i2c_remove),
697 .id_table = ssm2602_i2c_id,
698};
699#endif
700
701
702static int __init ssm2602_modinit(void)
703{
704 int ret = 0;
705
706#if defined(CONFIG_SPI_MASTER)
707 ret = spi_register_driver(&ssm2602_spi_driver);
708 if (ret)
709 return ret;
710#endif
711
712#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
713 ret = i2c_add_driver(&ssm2602_i2c_driver);
714 if (ret)
715 return ret;
716#endif
717
718 return ret;
719}
720module_init(ssm2602_modinit);
721
722static void __exit ssm2602_exit(void)
723{
724#if defined(CONFIG_SPI_MASTER)
725 spi_unregister_driver(&ssm2602_spi_driver);
726#endif
727
728#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
729 i2c_del_driver(&ssm2602_i2c_driver);
730#endif
731}
732module_exit(ssm2602_exit);
733
734MODULE_DESCRIPTION("ASoC SSM2602/SSM2603/SSM2604 driver");
735MODULE_AUTHOR("Cliff Cai");
736MODULE_LICENSE("GPL");
737
