xref: /linux/sound/soc/codecs/ssm2602.c (revision 068df0f34e81bc06c5eb5012ec2eda25624e87aa)
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 	unsigned int clk_out_pwr;
63 };
64 
65 /*
66  * ssm2602 register cache
67  * We can't read the ssm2602 register space when we are
68  * using 2 wire for device control, so we cache them instead.
69  * There is no point in caching the reset register
70  */
71 static const u16 ssm2602_reg[SSM2602_CACHEREGNUM] = {
72 	0x0097, 0x0097, 0x0079, 0x0079,
73 	0x000a, 0x0008, 0x009f, 0x000a,
74 	0x0000, 0x0000
75 };
76 
77 #define ssm2602_reset(c)	snd_soc_write(c, SSM2602_RESET, 0)
78 
79 /*Appending several "None"s just for OSS mixer use*/
80 static const char *ssm2602_input_select[] = {
81 	"Line", "Mic", "None", "None", "None",
82 	"None", "None", "None",
83 };
84 
85 static const char *ssm2602_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
86 
87 static const struct soc_enum ssm2602_enum[] = {
88 	SOC_ENUM_SINGLE(SSM2602_APANA, 2, 2, ssm2602_input_select),
89 	SOC_ENUM_SINGLE(SSM2602_APDIGI, 1, 4, ssm2602_deemph),
90 };
91 
92 static const unsigned int ssm260x_outmix_tlv[] = {
93 	TLV_DB_RANGE_HEAD(2),
94 	0, 47, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 0),
95 	48, 127, TLV_DB_SCALE_ITEM(-7400, 100, 0),
96 };
97 
98 static const DECLARE_TLV_DB_SCALE(ssm260x_inpga_tlv, -3450, 150, 0);
99 static const DECLARE_TLV_DB_SCALE(ssm260x_sidetone_tlv, -1500, 300, 0);
100 
101 static const struct snd_kcontrol_new ssm260x_snd_controls[] = {
102 SOC_DOUBLE_R_TLV("Capture Volume", SSM2602_LINVOL, SSM2602_RINVOL, 0, 45, 0,
103 	ssm260x_inpga_tlv),
104 SOC_DOUBLE_R("Capture Switch", SSM2602_LINVOL, SSM2602_RINVOL, 7, 1, 1),
105 
106 SOC_SINGLE("ADC High Pass Filter Switch", SSM2602_APDIGI, 0, 1, 1),
107 SOC_SINGLE("Store DC Offset Switch", SSM2602_APDIGI, 4, 1, 0),
108 
109 SOC_ENUM("Playback De-emphasis", ssm2602_enum[1]),
110 };
111 
112 static const struct snd_kcontrol_new ssm2602_snd_controls[] = {
113 SOC_DOUBLE_R_TLV("Master Playback Volume", SSM2602_LOUT1V, SSM2602_ROUT1V,
114 	0, 127, 0, ssm260x_outmix_tlv),
115 SOC_DOUBLE_R("Master Playback ZC Switch", SSM2602_LOUT1V, SSM2602_ROUT1V,
116 	7, 1, 0),
117 SOC_SINGLE_TLV("Sidetone Playback Volume", SSM2602_APANA, 6, 3, 1,
118 	ssm260x_sidetone_tlv),
119 
120 SOC_SINGLE("Mic Boost (+20dB)", SSM2602_APANA, 0, 1, 0),
121 SOC_SINGLE("Mic Boost2 (+20dB)", SSM2602_APANA, 8, 1, 0),
122 SOC_SINGLE("Mic Switch", SSM2602_APANA, 1, 1, 1),
123 };
124 
125 /* Output Mixer */
126 static const struct snd_kcontrol_new ssm260x_output_mixer_controls[] = {
127 SOC_DAPM_SINGLE("Line Bypass Switch", SSM2602_APANA, 3, 1, 0),
128 SOC_DAPM_SINGLE("HiFi Playback Switch", SSM2602_APANA, 4, 1, 0),
129 SOC_DAPM_SINGLE("Mic Sidetone Switch", SSM2602_APANA, 5, 1, 0),
130 };
131 
132 /* Input mux */
133 static const struct snd_kcontrol_new ssm2602_input_mux_controls =
134 SOC_DAPM_ENUM("Input Select", ssm2602_enum[0]);
135 
136 static const struct snd_soc_dapm_widget ssm260x_dapm_widgets[] = {
137 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SSM2602_PWR, 3, 1),
138 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", SSM2602_PWR, 2, 1),
139 SND_SOC_DAPM_PGA("Line Input", SSM2602_PWR, 0, 1, NULL, 0),
140 
141 SND_SOC_DAPM_SUPPLY("Digital Core Power", SSM2602_ACTIVE, 0, 0, NULL, 0),
142 
143 SND_SOC_DAPM_OUTPUT("LOUT"),
144 SND_SOC_DAPM_OUTPUT("ROUT"),
145 SND_SOC_DAPM_INPUT("RLINEIN"),
146 SND_SOC_DAPM_INPUT("LLINEIN"),
147 };
148 
149 static const struct snd_soc_dapm_widget ssm2602_dapm_widgets[] = {
150 SND_SOC_DAPM_MIXER("Output Mixer", SSM2602_PWR, 4, 1,
151 	ssm260x_output_mixer_controls,
152 	ARRAY_SIZE(ssm260x_output_mixer_controls)),
153 
154 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &ssm2602_input_mux_controls),
155 SND_SOC_DAPM_MICBIAS("Mic Bias", SSM2602_PWR, 1, 1),
156 
157 SND_SOC_DAPM_OUTPUT("LHPOUT"),
158 SND_SOC_DAPM_OUTPUT("RHPOUT"),
159 SND_SOC_DAPM_INPUT("MICIN"),
160 };
161 
162 static const struct snd_soc_dapm_widget ssm2604_dapm_widgets[] = {
163 SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0,
164 	ssm260x_output_mixer_controls,
165 	ARRAY_SIZE(ssm260x_output_mixer_controls) - 1), /* Last element is the mic */
166 };
167 
168 static const struct snd_soc_dapm_route ssm260x_routes[] = {
169 	{"DAC", NULL, "Digital Core Power"},
170 	{"ADC", NULL, "Digital Core Power"},
171 
172 	{"Output Mixer", "Line Bypass Switch", "Line Input"},
173 	{"Output Mixer", "HiFi Playback Switch", "DAC"},
174 
175 	{"ROUT", NULL, "Output Mixer"},
176 	{"LOUT", NULL, "Output Mixer"},
177 
178 	{"Line Input", NULL, "LLINEIN"},
179 	{"Line Input", NULL, "RLINEIN"},
180 };
181 
182 static const struct snd_soc_dapm_route ssm2602_routes[] = {
183 	{"Output Mixer", "Mic Sidetone Switch", "Mic Bias"},
184 
185 	{"RHPOUT", NULL, "Output Mixer"},
186 	{"LHPOUT", NULL, "Output Mixer"},
187 
188 	{"Input Mux", "Line", "Line Input"},
189 	{"Input Mux", "Mic", "Mic Bias"},
190 	{"ADC", NULL, "Input Mux"},
191 
192 	{"Mic Bias", NULL, "MICIN"},
193 };
194 
195 static const struct snd_soc_dapm_route ssm2604_routes[] = {
196 	{"ADC", NULL, "Line Input"},
197 };
198 
199 struct ssm2602_coeff {
200 	u32 mclk;
201 	u32 rate;
202 	u8 srate;
203 };
204 
205 #define SSM2602_COEFF_SRATE(sr, bosr, usb) (((sr) << 2) | ((bosr) << 1) | (usb))
206 
207 /* codec mclk clock coefficients */
208 static const struct ssm2602_coeff ssm2602_coeff_table[] = {
209 	/* 48k */
210 	{12288000, 48000, SSM2602_COEFF_SRATE(0x0, 0x0, 0x0)},
211 	{18432000, 48000, SSM2602_COEFF_SRATE(0x0, 0x1, 0x0)},
212 	{12000000, 48000, SSM2602_COEFF_SRATE(0x0, 0x0, 0x1)},
213 
214 	/* 32k */
215 	{12288000, 32000, SSM2602_COEFF_SRATE(0x6, 0x0, 0x0)},
216 	{18432000, 32000, SSM2602_COEFF_SRATE(0x6, 0x1, 0x0)},
217 	{12000000, 32000, SSM2602_COEFF_SRATE(0x6, 0x0, 0x1)},
218 
219 	/* 8k */
220 	{12288000, 8000, SSM2602_COEFF_SRATE(0x3, 0x0, 0x0)},
221 	{18432000, 8000, SSM2602_COEFF_SRATE(0x3, 0x1, 0x0)},
222 	{11289600, 8000, SSM2602_COEFF_SRATE(0xb, 0x0, 0x0)},
223 	{16934400, 8000, SSM2602_COEFF_SRATE(0xb, 0x1, 0x0)},
224 	{12000000, 8000, SSM2602_COEFF_SRATE(0x3, 0x0, 0x1)},
225 
226 	/* 96k */
227 	{12288000, 96000, SSM2602_COEFF_SRATE(0x7, 0x0, 0x0)},
228 	{18432000, 96000, SSM2602_COEFF_SRATE(0x7, 0x1, 0x0)},
229 	{12000000, 96000, SSM2602_COEFF_SRATE(0x7, 0x0, 0x1)},
230 
231 	/* 44.1k */
232 	{11289600, 44100, SSM2602_COEFF_SRATE(0x8, 0x0, 0x0)},
233 	{16934400, 44100, SSM2602_COEFF_SRATE(0x8, 0x1, 0x0)},
234 	{12000000, 44100, SSM2602_COEFF_SRATE(0x8, 0x1, 0x1)},
235 
236 	/* 88.2k */
237 	{11289600, 88200, SSM2602_COEFF_SRATE(0xf, 0x0, 0x0)},
238 	{16934400, 88200, SSM2602_COEFF_SRATE(0xf, 0x1, 0x0)},
239 	{12000000, 88200, SSM2602_COEFF_SRATE(0xf, 0x1, 0x1)},
240 };
241 
242 static inline int ssm2602_get_coeff(int mclk, int rate)
243 {
244 	int i;
245 
246 	for (i = 0; i < ARRAY_SIZE(ssm2602_coeff_table); i++) {
247 		if (ssm2602_coeff_table[i].rate == rate &&
248 			ssm2602_coeff_table[i].mclk == mclk)
249 			return ssm2602_coeff_table[i].srate;
250 	}
251 	return -EINVAL;
252 }
253 
254 static int ssm2602_hw_params(struct snd_pcm_substream *substream,
255 	struct snd_pcm_hw_params *params,
256 	struct snd_soc_dai *dai)
257 {
258 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
259 	struct snd_soc_codec *codec = rtd->codec;
260 	struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
261 	u16 iface = snd_soc_read(codec, SSM2602_IFACE) & 0xfff3;
262 	int srate = ssm2602_get_coeff(ssm2602->sysclk, params_rate(params));
263 
264 	if (substream == ssm2602->slave_substream) {
265 		dev_dbg(codec->dev, "Ignoring hw_params for slave substream\n");
266 		return 0;
267 	}
268 
269 	if (srate < 0)
270 		return srate;
271 
272 	snd_soc_write(codec, SSM2602_SRATE, srate);
273 
274 	/* bit size */
275 	switch (params_format(params)) {
276 	case SNDRV_PCM_FORMAT_S16_LE:
277 		break;
278 	case SNDRV_PCM_FORMAT_S20_3LE:
279 		iface |= 0x0004;
280 		break;
281 	case SNDRV_PCM_FORMAT_S24_LE:
282 		iface |= 0x0008;
283 		break;
284 	case SNDRV_PCM_FORMAT_S32_LE:
285 		iface |= 0x000c;
286 		break;
287 	}
288 	snd_soc_write(codec, SSM2602_IFACE, iface);
289 	return 0;
290 }
291 
292 static int ssm2602_startup(struct snd_pcm_substream *substream,
293 			   struct snd_soc_dai *dai)
294 {
295 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
296 	struct snd_soc_codec *codec = rtd->codec;
297 	struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
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(codec->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 
347 	if (mute)
348 		snd_soc_update_bits(codec, SSM2602_APDIGI,
349 				    APDIGI_ENABLE_DAC_MUTE,
350 				    APDIGI_ENABLE_DAC_MUTE);
351 	else
352 		snd_soc_update_bits(codec, SSM2602_APDIGI,
353 				    APDIGI_ENABLE_DAC_MUTE, 0);
354 	return 0;
355 }
356 
357 static int ssm2602_set_dai_sysclk(struct snd_soc_dai *codec_dai,
358 		int clk_id, unsigned int freq, int dir)
359 {
360 	struct snd_soc_codec *codec = codec_dai->codec;
361 	struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
362 
363 	if (dir == SND_SOC_CLOCK_IN) {
364 		if (clk_id != SSM2602_SYSCLK)
365 			return -EINVAL;
366 
367 		switch (freq) {
368 		case 11289600:
369 		case 12000000:
370 		case 12288000:
371 		case 16934400:
372 		case 18432000:
373 			ssm2602->sysclk = freq;
374 			break;
375 		default:
376 			return -EINVAL;
377 		}
378 	} else {
379 		unsigned int mask;
380 
381 		switch (clk_id) {
382 		case SSM2602_CLK_CLKOUT:
383 			mask = PWR_CLK_OUT_PDN;
384 			break;
385 		case SSM2602_CLK_XTO:
386 			mask = PWR_OSC_PDN;
387 			break;
388 		default:
389 			return -EINVAL;
390 		}
391 
392 		if (freq == 0)
393 			ssm2602->clk_out_pwr |= mask;
394 		else
395 			ssm2602->clk_out_pwr &= ~mask;
396 
397 		snd_soc_update_bits(codec, SSM2602_PWR,
398 			PWR_CLK_OUT_PDN | PWR_OSC_PDN, ssm2602->clk_out_pwr);
399 	}
400 
401 	return 0;
402 }
403 
404 static int ssm2602_set_dai_fmt(struct snd_soc_dai *codec_dai,
405 		unsigned int fmt)
406 {
407 	struct snd_soc_codec *codec = codec_dai->codec;
408 	u16 iface = 0;
409 
410 	/* set master/slave audio interface */
411 	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
412 	case SND_SOC_DAIFMT_CBM_CFM:
413 		iface |= 0x0040;
414 		break;
415 	case SND_SOC_DAIFMT_CBS_CFS:
416 		break;
417 	default:
418 		return -EINVAL;
419 	}
420 
421 	/* interface format */
422 	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
423 	case SND_SOC_DAIFMT_I2S:
424 		iface |= 0x0002;
425 		break;
426 	case SND_SOC_DAIFMT_RIGHT_J:
427 		break;
428 	case SND_SOC_DAIFMT_LEFT_J:
429 		iface |= 0x0001;
430 		break;
431 	case SND_SOC_DAIFMT_DSP_A:
432 		iface |= 0x0013;
433 		break;
434 	case SND_SOC_DAIFMT_DSP_B:
435 		iface |= 0x0003;
436 		break;
437 	default:
438 		return -EINVAL;
439 	}
440 
441 	/* clock inversion */
442 	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
443 	case SND_SOC_DAIFMT_NB_NF:
444 		break;
445 	case SND_SOC_DAIFMT_IB_IF:
446 		iface |= 0x0090;
447 		break;
448 	case SND_SOC_DAIFMT_IB_NF:
449 		iface |= 0x0080;
450 		break;
451 	case SND_SOC_DAIFMT_NB_IF:
452 		iface |= 0x0010;
453 		break;
454 	default:
455 		return -EINVAL;
456 	}
457 
458 	/* set iface */
459 	snd_soc_write(codec, SSM2602_IFACE, iface);
460 	return 0;
461 }
462 
463 static int ssm2602_set_bias_level(struct snd_soc_codec *codec,
464 				 enum snd_soc_bias_level level)
465 {
466 	struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
467 
468 	switch (level) {
469 	case SND_SOC_BIAS_ON:
470 		/* vref/mid on, osc and clkout on if enabled */
471 		snd_soc_update_bits(codec, SSM2602_PWR,
472 			PWR_POWER_OFF | PWR_CLK_OUT_PDN | PWR_OSC_PDN,
473 			ssm2602->clk_out_pwr);
474 		break;
475 	case SND_SOC_BIAS_PREPARE:
476 		break;
477 	case SND_SOC_BIAS_STANDBY:
478 		/* everything off except vref/vmid, */
479 		snd_soc_update_bits(codec, SSM2602_PWR,
480 			PWR_POWER_OFF | PWR_CLK_OUT_PDN | PWR_OSC_PDN,
481 			PWR_CLK_OUT_PDN | PWR_OSC_PDN);
482 		break;
483 	case SND_SOC_BIAS_OFF:
484 		/* everything off */
485 		snd_soc_update_bits(codec, SSM2602_PWR,
486 			PWR_POWER_OFF, PWR_POWER_OFF);
487 		break;
488 
489 	}
490 	codec->dapm.bias_level = level;
491 	return 0;
492 }
493 
494 #define SSM2602_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_32000 |\
495 		SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
496 		SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
497 
498 #define SSM2602_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
499 		SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
500 
501 static struct snd_soc_dai_ops ssm2602_dai_ops = {
502 	.startup	= ssm2602_startup,
503 	.hw_params	= ssm2602_hw_params,
504 	.shutdown	= ssm2602_shutdown,
505 	.digital_mute	= ssm2602_mute,
506 	.set_sysclk	= ssm2602_set_dai_sysclk,
507 	.set_fmt	= ssm2602_set_dai_fmt,
508 };
509 
510 static struct snd_soc_dai_driver ssm2602_dai = {
511 	.name = "ssm2602-hifi",
512 	.playback = {
513 		.stream_name = "Playback",
514 		.channels_min = 2,
515 		.channels_max = 2,
516 		.rates = SSM2602_RATES,
517 		.formats = SSM2602_FORMATS,},
518 	.capture = {
519 		.stream_name = "Capture",
520 		.channels_min = 2,
521 		.channels_max = 2,
522 		.rates = SSM2602_RATES,
523 		.formats = SSM2602_FORMATS,},
524 	.ops = &ssm2602_dai_ops,
525 };
526 
527 static int ssm2602_suspend(struct snd_soc_codec *codec, pm_message_t state)
528 {
529 	ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF);
530 	return 0;
531 }
532 
533 static int ssm2602_resume(struct snd_soc_codec *codec)
534 {
535 	snd_soc_cache_sync(codec);
536 
537 	ssm2602_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
538 
539 	return 0;
540 }
541 
542 static int ssm2602_probe(struct snd_soc_codec *codec)
543 {
544 	struct snd_soc_dapm_context *dapm = &codec->dapm;
545 	int ret;
546 
547 	snd_soc_update_bits(codec, SSM2602_LOUT1V,
548 			    LOUT1V_LRHP_BOTH, LOUT1V_LRHP_BOTH);
549 	snd_soc_update_bits(codec, SSM2602_ROUT1V,
550 			    ROUT1V_RLHP_BOTH, ROUT1V_RLHP_BOTH);
551 
552 	ret = snd_soc_add_controls(codec, ssm2602_snd_controls,
553 			ARRAY_SIZE(ssm2602_snd_controls));
554 	if (ret)
555 		return ret;
556 
557 	ret = snd_soc_dapm_new_controls(dapm, ssm2602_dapm_widgets,
558 			ARRAY_SIZE(ssm2602_dapm_widgets));
559 	if (ret)
560 		return ret;
561 
562 	return snd_soc_dapm_add_routes(dapm, ssm2602_routes,
563 			ARRAY_SIZE(ssm2602_routes));
564 }
565 
566 static int ssm2604_probe(struct snd_soc_codec *codec)
567 {
568 	struct snd_soc_dapm_context *dapm = &codec->dapm;
569 	int ret;
570 
571 	ret = snd_soc_dapm_new_controls(dapm, ssm2604_dapm_widgets,
572 			ARRAY_SIZE(ssm2604_dapm_widgets));
573 	if (ret)
574 		return ret;
575 
576 	return snd_soc_dapm_add_routes(dapm, ssm2604_routes,
577 			ARRAY_SIZE(ssm2604_routes));
578 }
579 
580 static int ssm260x_probe(struct snd_soc_codec *codec)
581 {
582 	struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
583 	int ret;
584 
585 	pr_info("ssm2602 Audio Codec %s", SSM2602_VERSION);
586 
587 	ret = snd_soc_codec_set_cache_io(codec, 7, 9, ssm2602->control_type);
588 	if (ret < 0) {
589 		dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
590 		return ret;
591 	}
592 
593 	ret = ssm2602_reset(codec);
594 	if (ret < 0) {
595 		dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
596 		return ret;
597 	}
598 
599 	/* set the update bits */
600 	snd_soc_update_bits(codec, SSM2602_LINVOL,
601 			    LINVOL_LRIN_BOTH, LINVOL_LRIN_BOTH);
602 	snd_soc_update_bits(codec, SSM2602_RINVOL,
603 			    RINVOL_RLIN_BOTH, RINVOL_RLIN_BOTH);
604 	/*select Line in as default input*/
605 	snd_soc_write(codec, SSM2602_APANA, APANA_SELECT_DAC |
606 			APANA_ENABLE_MIC_BOOST);
607 
608 	switch (ssm2602->type) {
609 	case SSM2602:
610 		ret = ssm2602_probe(codec);
611 		break;
612 	case SSM2604:
613 		ret = ssm2604_probe(codec);
614 		break;
615 	}
616 
617 	if (ret)
618 		return ret;
619 
620 	ssm2602_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
621 
622 	return 0;
623 }
624 
625 /* remove everything here */
626 static int ssm2602_remove(struct snd_soc_codec *codec)
627 {
628 	ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF);
629 	return 0;
630 }
631 
632 static struct snd_soc_codec_driver soc_codec_dev_ssm2602 = {
633 	.probe =	ssm260x_probe,
634 	.remove =	ssm2602_remove,
635 	.suspend =	ssm2602_suspend,
636 	.resume =	ssm2602_resume,
637 	.set_bias_level = ssm2602_set_bias_level,
638 	.reg_cache_size = ARRAY_SIZE(ssm2602_reg),
639 	.reg_word_size = sizeof(u16),
640 	.reg_cache_default = ssm2602_reg,
641 
642 	.controls = ssm260x_snd_controls,
643 	.num_controls = ARRAY_SIZE(ssm260x_snd_controls),
644 	.dapm_widgets = ssm260x_dapm_widgets,
645 	.num_dapm_widgets = ARRAY_SIZE(ssm260x_dapm_widgets),
646 	.dapm_routes = ssm260x_routes,
647 	.num_dapm_routes = ARRAY_SIZE(ssm260x_routes),
648 };
649 
650 #if defined(CONFIG_SPI_MASTER)
651 static int __devinit ssm2602_spi_probe(struct spi_device *spi)
652 {
653 	struct ssm2602_priv *ssm2602;
654 	int ret;
655 
656 	ssm2602 = kzalloc(sizeof(struct ssm2602_priv), GFP_KERNEL);
657 	if (ssm2602 == NULL)
658 		return -ENOMEM;
659 
660 	spi_set_drvdata(spi, ssm2602);
661 	ssm2602->control_type = SND_SOC_SPI;
662 	ssm2602->type = SSM2602;
663 
664 	ret = snd_soc_register_codec(&spi->dev,
665 			&soc_codec_dev_ssm2602, &ssm2602_dai, 1);
666 	if (ret < 0)
667 		kfree(ssm2602);
668 	return ret;
669 }
670 
671 static int __devexit ssm2602_spi_remove(struct spi_device *spi)
672 {
673 	snd_soc_unregister_codec(&spi->dev);
674 	kfree(spi_get_drvdata(spi));
675 	return 0;
676 }
677 
678 static struct spi_driver ssm2602_spi_driver = {
679 	.driver = {
680 		.name	= "ssm2602",
681 		.owner	= THIS_MODULE,
682 	},
683 	.probe		= ssm2602_spi_probe,
684 	.remove		= __devexit_p(ssm2602_spi_remove),
685 };
686 #endif
687 
688 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
689 /*
690  * ssm2602 2 wire address is determined by GPIO5
691  * state during powerup.
692  *    low  = 0x1a
693  *    high = 0x1b
694  */
695 static int __devinit ssm2602_i2c_probe(struct i2c_client *i2c,
696 			     const struct i2c_device_id *id)
697 {
698 	struct ssm2602_priv *ssm2602;
699 	int ret;
700 
701 	ssm2602 = kzalloc(sizeof(struct ssm2602_priv), GFP_KERNEL);
702 	if (ssm2602 == NULL)
703 		return -ENOMEM;
704 
705 	i2c_set_clientdata(i2c, ssm2602);
706 	ssm2602->control_type = SND_SOC_I2C;
707 	ssm2602->type = id->driver_data;
708 
709 	ret = snd_soc_register_codec(&i2c->dev,
710 			&soc_codec_dev_ssm2602, &ssm2602_dai, 1);
711 	if (ret < 0)
712 		kfree(ssm2602);
713 	return ret;
714 }
715 
716 static int __devexit ssm2602_i2c_remove(struct i2c_client *client)
717 {
718 	snd_soc_unregister_codec(&client->dev);
719 	kfree(i2c_get_clientdata(client));
720 	return 0;
721 }
722 
723 static const struct i2c_device_id ssm2602_i2c_id[] = {
724 	{ "ssm2602", SSM2602 },
725 	{ "ssm2603", SSM2602 },
726 	{ "ssm2604", SSM2604 },
727 	{ }
728 };
729 MODULE_DEVICE_TABLE(i2c, ssm2602_i2c_id);
730 
731 /* corgi i2c codec control layer */
732 static struct i2c_driver ssm2602_i2c_driver = {
733 	.driver = {
734 		.name = "ssm2602",
735 		.owner = THIS_MODULE,
736 	},
737 	.probe = ssm2602_i2c_probe,
738 	.remove = __devexit_p(ssm2602_i2c_remove),
739 	.id_table = ssm2602_i2c_id,
740 };
741 #endif
742 
743 
744 static int __init ssm2602_modinit(void)
745 {
746 	int ret = 0;
747 
748 #if defined(CONFIG_SPI_MASTER)
749 	ret = spi_register_driver(&ssm2602_spi_driver);
750 	if (ret)
751 		return ret;
752 #endif
753 
754 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
755 	ret = i2c_add_driver(&ssm2602_i2c_driver);
756 	if (ret)
757 		return ret;
758 #endif
759 
760 	return ret;
761 }
762 module_init(ssm2602_modinit);
763 
764 static void __exit ssm2602_exit(void)
765 {
766 #if defined(CONFIG_SPI_MASTER)
767 	spi_unregister_driver(&ssm2602_spi_driver);
768 #endif
769 
770 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
771 	i2c_del_driver(&ssm2602_i2c_driver);
772 #endif
773 }
774 module_exit(ssm2602_exit);
775 
776 MODULE_DESCRIPTION("ASoC SSM2602/SSM2603/SSM2604 driver");
777 MODULE_AUTHOR("Cliff Cai");
778 MODULE_LICENSE("GPL");
779