xref: /linux/sound/soc/codecs/ssm2602.c (revision cff4fa8415a3224a5abdd2b1dd7f431e4ea49366)
1 /*
2  * File:         sound/soc/codecs/ssm2602.c
3  * Author:       Cliff Cai <Cliff.Cai@analog.com>
4  *
5  * Created:      Tue June 06 2008
6  * Description:  Driver for ssm2602 sound chip
7  *
8  * Modified:
9  *               Copyright 2008 Analog Devices Inc.
10  *
11  * Bugs:         Enter bugs at http://blackfin.uclinux.org/
12  *
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.
17  *
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.
22  *
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
27  */
28 
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 
49 enum ssm2602_type {
50 	SSM2602,
51 	SSM2604,
52 };
53 
54 /* codec private data */
55 struct 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  * 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
69  */
70 static 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 /*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",
82 };
83 
84 static const char *ssm2602_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
85 
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),
89 };
90 
91 static 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 
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);
99 
100 static const struct snd_kcontrol_new ssm260x_snd_controls[] = {
101 SOC_DOUBLE_R_TLV("Capture Volume", SSM2602_LINVOL, SSM2602_RINVOL, 0, 45, 0,
102 	ssm260x_inpga_tlv),
103 SOC_DOUBLE_R("Capture Switch", SSM2602_LINVOL, SSM2602_RINVOL, 7, 1, 1),
104 
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),
107 
108 SOC_ENUM("Playback De-emphasis", ssm2602_enum[1]),
109 };
110 
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,
115 	7, 1, 0),
116 SOC_SINGLE_TLV("Sidetone Playback Volume", SSM2602_APANA, 6, 3, 1,
117 	ssm260x_sidetone_tlv),
118 
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),
122 };
123 
124 /* Output Mixer */
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),
129 };
130 
131 /* Input mux */
132 static const struct snd_kcontrol_new ssm2602_input_mux_controls =
133 SOC_DAPM_ENUM("Input Select", ssm2602_enum[0]);
134 
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),
139 
140 SND_SOC_DAPM_SUPPLY("Digital Core Power", SSM2602_ACTIVE, 0, 0, NULL, 0),
141 
142 SND_SOC_DAPM_OUTPUT("LOUT"),
143 SND_SOC_DAPM_OUTPUT("ROUT"),
144 SND_SOC_DAPM_INPUT("RLINEIN"),
145 SND_SOC_DAPM_INPUT("LLINEIN"),
146 };
147 
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)),
152 
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),
155 
156 SND_SOC_DAPM_OUTPUT("LHPOUT"),
157 SND_SOC_DAPM_OUTPUT("RHPOUT"),
158 SND_SOC_DAPM_INPUT("MICIN"),
159 };
160 
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 */
165 };
166 
167 static 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 
181 static 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 
194 static const struct snd_soc_dapm_route ssm2604_routes[] = {
195 	{"ADC", NULL, "Line Input"},
196 };
197 
198 struct 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 /* codec mclk clock coefficients */
207 static const struct ssm2602_coeff ssm2602_coeff_table[] = {
208 	/* 48k */
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 	/* 32k */
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 	/* 8k */
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 	/* 96k */
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 	/* 44.1k */
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 	/* 88.2k */
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 
241 static 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 
253 static 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 	/* bit size */
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 
291 static 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 	/* 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
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 
329 static 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 
343 static 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 
355 static 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 
372 static 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 	/* set master/slave audio interface */
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 	/* interface format */
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 	/* clock inversion */
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 	/* set iface */
427 	snd_soc_write(codec, SSM2602_IFACE, iface);
428 	return 0;
429 }
430 
431 static 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 		/* vref/mid, osc on, dac unmute */
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 		/* everything off except vref/vmid, */
445 		snd_soc_write(codec, SSM2602_PWR, reg | PWR_CLK_OUT_PDN);
446 		break;
447 	case SND_SOC_BIAS_OFF:
448 		/* everything off, dac mute, inactive */
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 
464 static 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 
473 static 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 
490 static 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 
496 static 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 
505 static 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 
529 static 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 
543 static 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 	/* set the update bits */
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 	/*select Line in as default input*/
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 /* remove everything here */
584 static int ssm2602_remove(struct snd_soc_codec *codec)
585 {
586 	ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF);
587 	return 0;
588 }
589 
590 static 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)
609 static 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 
629 static 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 
636 static 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  * ssm2602 2 wire address is determined by GPIO5
649  * state during powerup.
650  *    low  = 0x1a
651  *    high = 0x1b
652  */
653 static 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 
674 static 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 
681 static const struct i2c_device_id ssm2602_i2c_id[] = {
682 	{ "ssm2602", SSM2602 },
683 	{ "ssm2603", SSM2602 },
684 	{ "ssm2604", SSM2604 },
685 	{ }
686 };
687 MODULE_DEVICE_TABLE(i2c, ssm2602_i2c_id);
688 
689 /* corgi i2c codec control layer */
690 static 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 
702 static 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 }
720 module_init(ssm2602_modinit);
721 
722 static 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 }
732 module_exit(ssm2602_exit);
733 
734 MODULE_DESCRIPTION("ASoC SSM2602/SSM2603/SSM2604 driver");
735 MODULE_AUTHOR("Cliff Cai");
736 MODULE_LICENSE("GPL");
737