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ASoC: Register non-AC97 codec DAIs
[deliverable/linux.git] / sound / soc / codecs / ssm2602.c
CommitLineData
b7138212
CC		 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/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>
42
43#include "ssm2602.h"
44
b7138212
CC		 45#define SSM2602_VERSION "0.1"
46
47struct snd_soc_codec_device soc_codec_dev_ssm2602;
48
49/* codec private data */
50struct ssm2602_priv {
51 unsigned int sysclk;
52 struct snd_pcm_substream *master_substream;
53 struct snd_pcm_substream *slave_substream;
54};
55
56/*
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
61 */
62static const u16 ssm2602_reg[SSM2602_CACHEREGNUM] = {
63 0x0017, 0x0017, 0x0079, 0x0079,
64 0x0000, 0x0000, 0x0000, 0x000a,
65 0x0000, 0x0000
66};
67
68/*
69 * read ssm2602 register cache
70 */
71static inline unsigned int ssm2602_read_reg_cache(struct snd_soc_codec *codec,
72 unsigned int reg)
73{
74 u16 *cache = codec->reg_cache;
75 if (reg == SSM2602_RESET)
76 return 0;
77 if (reg >= SSM2602_CACHEREGNUM)
78 return -1;
79 return cache[reg];
80}
81
82/*
83 * write ssm2602 register cache
84 */
85static inline void ssm2602_write_reg_cache(struct snd_soc_codec *codec,
86 u16 reg, unsigned int value)
87{
88 u16 *cache = codec->reg_cache;
89 if (reg >= SSM2602_CACHEREGNUM)
90 return;
91 cache[reg] = value;
92}
93
94/*
95 * write to the ssm2602 register space
96 */
97static int ssm2602_write(struct snd_soc_codec *codec, unsigned int reg,
98 unsigned int value)
99{
100 u8 data[2];
101
102 /* data is
103 * D15..D9 ssm2602 register offset
104 * D8...D0 register data
105 */
106 data[0] = (reg << 1) | ((value >> 8) & 0x0001);
107 data[1] = value & 0x00ff;
108
109 ssm2602_write_reg_cache(codec, reg, value);
110 if (codec->hw_write(codec->control_data, data, 2) == 2)
111 return 0;
112 else
113 return -EIO;
114}
115
116#define ssm2602_reset(c) ssm2602_write(c, SSM2602_RESET, 0)
117
118/*Appending several "None"s just for OSS mixer use*/
119static const char *ssm2602_input_select[] = {
120 "Line", "Mic", "None", "None", "None",
121 "None", "None", "None",
122};
123
124static const char *ssm2602_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
125
126static 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),
129};
130
131static const struct snd_kcontrol_new ssm2602_snd_controls[] = {
132
133SOC_DOUBLE_R("Master Playback Volume", SSM2602_LOUT1V, SSM2602_ROUT1V,
134 0, 127, 0),
135SOC_DOUBLE_R("Master Playback ZC Switch", SSM2602_LOUT1V, SSM2602_ROUT1V,
136 7, 1, 0),
137
138SOC_DOUBLE_R("Capture Volume", SSM2602_LINVOL, SSM2602_RINVOL, 0, 31, 0),
139SOC_DOUBLE_R("Capture Switch", SSM2602_LINVOL, SSM2602_RINVOL, 7, 1, 1),
140
141SOC_SINGLE("Mic Boost (+20dB)", SSM2602_APANA, 0, 1, 0),
142SOC_SINGLE("Mic Switch", SSM2602_APANA, 1, 1, 1),
143
144SOC_SINGLE("Sidetone Playback Volume", SSM2602_APANA, 6, 3, 1),
145
146SOC_SINGLE("ADC High Pass Filter Switch", SSM2602_APDIGI, 0, 1, 1),
147SOC_SINGLE("Store DC Offset Switch", SSM2602_APDIGI, 4, 1, 0),
148
149SOC_ENUM("Capture Source", ssm2602_enum[0]),
150
151SOC_ENUM("Playback De-emphasis", ssm2602_enum[1]),
152};
153
154/* add non dapm controls */
155static int ssm2602_add_controls(struct snd_soc_codec *codec)
156{
157 int err, i;
158
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));
162 if (err < 0)
163 return err;
164 }
165
166 return 0;
167}
168
169/* Output Mixer */
170static const struct snd_kcontrol_new ssm2602_output_mixer_controls[] = {
171SOC_DAPM_SINGLE("Line Bypass Switch", SSM2602_APANA, 3, 1, 0),
172SOC_DAPM_SINGLE("Mic Sidetone Switch", SSM2602_APANA, 5, 1, 0),
173SOC_DAPM_SINGLE("HiFi Playback Switch", SSM2602_APANA, 4, 1, 0),
174};
175
176/* Input mux */
177static const struct snd_kcontrol_new ssm2602_input_mux_controls =
178SOC_DAPM_ENUM("Input Select", ssm2602_enum[0]);
179
180static const struct snd_soc_dapm_widget ssm2602_dapm_widgets[] = {
181SND_SOC_DAPM_MIXER("Output Mixer", SSM2602_PWR, 4, 1,
182 &ssm2602_output_mixer_controls[0],
183 ARRAY_SIZE(ssm2602_output_mixer_controls)),
184SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SSM2602_PWR, 3, 1),
185SND_SOC_DAPM_OUTPUT("LOUT"),
186SND_SOC_DAPM_OUTPUT("LHPOUT"),
187SND_SOC_DAPM_OUTPUT("ROUT"),
188SND_SOC_DAPM_OUTPUT("RHPOUT"),
189SND_SOC_DAPM_ADC("ADC", "HiFi Capture", SSM2602_PWR, 2, 1),
190SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &ssm2602_input_mux_controls),
191SND_SOC_DAPM_PGA("Line Input", SSM2602_PWR, 0, 1, NULL, 0),
192SND_SOC_DAPM_MICBIAS("Mic Bias", SSM2602_PWR, 1, 1),
193SND_SOC_DAPM_INPUT("MICIN"),
194SND_SOC_DAPM_INPUT("RLINEIN"),
195SND_SOC_DAPM_INPUT("LLINEIN"),
196};
197
198static const struct snd_soc_dapm_route audio_conn[] = {
199 /* output mixer */
200 {"Output Mixer", "Line Bypass Switch", "Line Input"},
201 {"Output Mixer", "HiFi Playback Switch", "DAC"},
202 {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"},
203
204 /* outputs */
205 {"RHPOUT", NULL, "Output Mixer"},
206 {"ROUT", NULL, "Output Mixer"},
207 {"LHPOUT", NULL, "Output Mixer"},
208 {"LOUT", NULL, "Output Mixer"},
209
210 /* input mux */
211 {"Input Mux", "Line", "Line Input"},
212 {"Input Mux", "Mic", "Mic Bias"},
213 {"ADC", NULL, "Input Mux"},
214
215 /* inputs */
216 {"Line Input", NULL, "LLINEIN"},
217 {"Line Input", NULL, "RLINEIN"},
218 {"Mic Bias", NULL, "MICIN"},
219};
220
221static int ssm2602_add_widgets(struct snd_soc_codec *codec)
222{
223 snd_soc_dapm_new_controls(codec, ssm2602_dapm_widgets,
224 ARRAY_SIZE(ssm2602_dapm_widgets));
225
226 snd_soc_dapm_add_routes(codec, audio_conn, ARRAY_SIZE(audio_conn));
227
228 snd_soc_dapm_new_widgets(codec);
229 return 0;
230}
231
232struct _coeff_div {
233 u32 mclk;
234 u32 rate;
235 u16 fs;
236 u8 sr:4;
237 u8 bosr:1;
238 u8 usb:1;
239};
240
241/* codec mclk clock divider coefficients */
242static const struct _coeff_div coeff_div[] = {
243 /* 48k */
244 {12288000, 48000, 256, 0x0, 0x0, 0x0},
245 {18432000, 48000, 384, 0x0, 0x1, 0x0},
246 {12000000, 48000, 250, 0x0, 0x0, 0x1},
247
248 /* 32k */
249 {12288000, 32000, 384, 0x6, 0x0, 0x0},
250 {18432000, 32000, 576, 0x6, 0x1, 0x0},
251 {12000000, 32000, 375, 0x6, 0x0, 0x1},
252
253 /* 8k */
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},
259
260 /* 96k */
261 {12288000, 96000, 128, 0x7, 0x0, 0x0},
262 {18432000, 96000, 192, 0x7, 0x1, 0x0},
263 {12000000, 96000, 125, 0x7, 0x0, 0x1},
264
265 /* 44.1k */
266 {11289600, 44100, 256, 0x8, 0x0, 0x0},
267 {16934400, 44100, 384, 0x8, 0x1, 0x0},
268 {12000000, 44100, 272, 0x8, 0x1, 0x1},
269
270 /* 88.2k */
271 {11289600, 88200, 128, 0xf, 0x0, 0x0},
272 {16934400, 88200, 192, 0xf, 0x1, 0x0},
273 {12000000, 88200, 136, 0xf, 0x1, 0x1},
274};
275
276static inline int get_coeff(int mclk, int rate)
277{
278 int i;
279
280 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
281 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
282 return i;
283 }
284 return i;
285}
286
287static int ssm2602_hw_params(struct snd_pcm_substream *substream,
dee89c4d
MB		 288 struct snd_pcm_hw_params *params,
289 struct snd_soc_dai *dai)
b7138212
CC		 290{
291 u16 srate;
292 struct snd_soc_pcm_runtime *rtd = substream->private_data;
293 struct snd_soc_device *socdev = rtd->socdev;
294 struct snd_soc_codec *codec = socdev->codec;
295 struct ssm2602_priv *ssm2602 = codec->private_data;
faab5a32 296 struct i2c_client *i2c = codec->control_data;
b7138212
CC		 297 u16 iface = ssm2602_read_reg_cache(codec, SSM2602_IFACE) & 0xfff3;
298 int i = get_coeff(ssm2602->sysclk, params_rate(params));
299
faab5a32
KB		 300 if (substream == ssm2602->slave_substream) {
301 dev_dbg(&i2c->dev, "Ignoring hw_params for slave substream\n");
302 return 0;
303 }
304
b7138212
CC		 305 /*no match is found*/
306 if (i == ARRAY_SIZE(coeff_div))
307 return -EINVAL;
308
309 srate = (coeff_div[i].sr << 2) |
310 (coeff_div[i].bosr << 1) | coeff_div[i].usb;
311
312 ssm2602_write(codec, SSM2602_ACTIVE, 0);
313 ssm2602_write(codec, SSM2602_SRATE, srate);
314
315 /* bit size */
316 switch (params_format(params)) {
317 case SNDRV_PCM_FORMAT_S16_LE:
318 break;
319 case SNDRV_PCM_FORMAT_S20_3LE:
320 iface |= 0x0004;
321 break;
322 case SNDRV_PCM_FORMAT_S24_LE:
323 iface |= 0x0008;
324 break;
325 case SNDRV_PCM_FORMAT_S32_LE:
326 iface |= 0x000c;
327 break;
328 }
329 ssm2602_write(codec, SSM2602_IFACE, iface);
330 ssm2602_write(codec, SSM2602_ACTIVE, ACTIVE_ACTIVATE_CODEC);
331 return 0;
332}
333
dee89c4d
MB		 334static int ssm2602_startup(struct snd_pcm_substream *substream,
335 struct snd_soc_dai *dai)
b7138212
CC		 336{
337 struct snd_soc_pcm_runtime *rtd = substream->private_data;
338 struct snd_soc_device *socdev = rtd->socdev;
339 struct snd_soc_codec *codec = socdev->codec;
340 struct ssm2602_priv *ssm2602 = codec->private_data;
faab5a32 341 struct i2c_client *i2c = codec->control_data;
b7138212
CC		 342 struct snd_pcm_runtime *master_runtime;
343
344 /* The DAI has shared clocks so if we already have a playback or
345 * capture going then constrain this substream to match it.
faab5a32 346 * TODO: the ssm2602 allows pairs of non-matching PB/REC rates
b7138212
CC		 347 */
348 if (ssm2602->master_substream) {
349 master_runtime = ssm2602->master_substream->runtime;
faab5a32
KB		 350 dev_dbg(&i2c->dev, "Constraining to %d bits at %dHz\n",
351 master_runtime->sample_bits,
352 master_runtime->rate);
353
b7138212
CC		 354 snd_pcm_hw_constraint_minmax(substream->runtime,
355 SNDRV_PCM_HW_PARAM_RATE,
356 master_runtime->rate,
357 master_runtime->rate);
358
359 snd_pcm_hw_constraint_minmax(substream->runtime,
360 SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
361 master_runtime->sample_bits,
362 master_runtime->sample_bits);
363
364 ssm2602->slave_substream = substream;
365 } else
366 ssm2602->master_substream = substream;
367
368 return 0;
369}
370
dee89c4d
MB		 371static int ssm2602_pcm_prepare(struct snd_pcm_substream *substream,
372 struct snd_soc_dai *dai)
b7138212
CC		 373{
374 struct snd_soc_pcm_runtime *rtd = substream->private_data;
375 struct snd_soc_device *socdev = rtd->socdev;
376 struct snd_soc_codec *codec = socdev->codec;
377 /* set active */
378 ssm2602_write(codec, SSM2602_ACTIVE, ACTIVE_ACTIVATE_CODEC);
379
380 return 0;
381}
382
dee89c4d
MB		 383static void ssm2602_shutdown(struct snd_pcm_substream *substream,
384 struct snd_soc_dai *dai)
b7138212
CC		 385{
386 struct snd_soc_pcm_runtime *rtd = substream->private_data;
387 struct snd_soc_device *socdev = rtd->socdev;
388 struct snd_soc_codec *codec = socdev->codec;
faab5a32 389 struct ssm2602_priv *ssm2602 = codec->private_data;
b7138212
CC		 390 /* deactivate */
391 if (!codec->active)
392 ssm2602_write(codec, SSM2602_ACTIVE, 0);
faab5a32
KB		 393
394 if (ssm2602->master_substream == substream)
395 ssm2602->master_substream = ssm2602->slave_substream;
396
397 ssm2602->slave_substream = NULL;
b7138212
CC		 398}
399
400static int ssm2602_mute(struct snd_soc_dai *dai, int mute)
401{
402 struct snd_soc_codec *codec = dai->codec;
403 u16 mute_reg = ssm2602_read_reg_cache(codec, SSM2602_APDIGI) & ~APDIGI_ENABLE_DAC_MUTE;
404 if (mute)
405 ssm2602_write(codec, SSM2602_APDIGI,
406 mute_reg | APDIGI_ENABLE_DAC_MUTE);
407 else
408 ssm2602_write(codec, SSM2602_APDIGI, mute_reg);
409 return 0;
410}
411
412static int ssm2602_set_dai_sysclk(struct snd_soc_dai *codec_dai,
413 int clk_id, unsigned int freq, int dir)
414{
415 struct snd_soc_codec *codec = codec_dai->codec;
416 struct ssm2602_priv *ssm2602 = codec->private_data;
417 switch (freq) {
418 case 11289600:
419 case 12000000:
420 case 12288000:
421 case 16934400:
422 case 18432000:
423 ssm2602->sysclk = freq;
424 return 0;
425 }
426 return -EINVAL;
427}
428
429static int ssm2602_set_dai_fmt(struct snd_soc_dai *codec_dai,
430 unsigned int fmt)
431{
432 struct snd_soc_codec *codec = codec_dai->codec;
433 u16 iface = 0;
434
435 /* set master/slave audio interface */
436 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
437 case SND_SOC_DAIFMT_CBM_CFM:
438 iface |= 0x0040;
439 break;
440 case SND_SOC_DAIFMT_CBS_CFS:
441 break;
442 default:
443 return -EINVAL;
444 }
445
446 /* interface format */
447 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
448 case SND_SOC_DAIFMT_I2S:
449 iface |= 0x0002;
450 break;
451 case SND_SOC_DAIFMT_RIGHT_J:
452 break;
453 case SND_SOC_DAIFMT_LEFT_J:
454 iface |= 0x0001;
455 break;
456 case SND_SOC_DAIFMT_DSP_A:
457 iface |= 0x0003;
458 break;
459 case SND_SOC_DAIFMT_DSP_B:
460 iface |= 0x0013;
461 break;
462 default:
463 return -EINVAL;
464 }
465
466 /* clock inversion */
467 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
468 case SND_SOC_DAIFMT_NB_NF:
469 break;
470 case SND_SOC_DAIFMT_IB_IF:
471 iface |= 0x0090;
472 break;
473 case SND_SOC_DAIFMT_IB_NF:
474 iface |= 0x0080;
475 break;
476 case SND_SOC_DAIFMT_NB_IF:
477 iface |= 0x0010;
478 break;
479 default:
480 return -EINVAL;
481 }
482
483 /* set iface */
484 ssm2602_write(codec, SSM2602_IFACE, iface);
485 return 0;
486}
487
488static int ssm2602_set_bias_level(struct snd_soc_codec *codec,
489 enum snd_soc_bias_level level)
490{
491 u16 reg = ssm2602_read_reg_cache(codec, SSM2602_PWR) & 0xff7f;
492
493 switch (level) {
494 case SND_SOC_BIAS_ON:
495 /* vref/mid, osc on, dac unmute */
496 ssm2602_write(codec, SSM2602_PWR, reg);
497 break;
498 case SND_SOC_BIAS_PREPARE:
499 break;
500 case SND_SOC_BIAS_STANDBY:
501 /* everything off except vref/vmid, */
502 ssm2602_write(codec, SSM2602_PWR, reg | PWR_CLK_OUT_PDN);
503 break;
504 case SND_SOC_BIAS_OFF:
505 /* everything off, dac mute, inactive */
506 ssm2602_write(codec, SSM2602_ACTIVE, 0);
507 ssm2602_write(codec, SSM2602_PWR, 0xffff);
508 break;
509
510 }
511 codec->bias_level = level;
512 return 0;
513}
514
515#define SSM2602_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
516 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
517 SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
518 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
519 SNDRV_PCM_RATE_96000)
520
5de27b6c
KB		 521#define SSM2602_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
522 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
523
b7138212
CC		 524struct snd_soc_dai ssm2602_dai = {
525 .name = "SSM2602",
526 .playback = {
527 .stream_name = "Playback",
528 .channels_min = 2,
529 .channels_max = 2,
530 .rates = SSM2602_RATES,
5de27b6c 531 .formats = SSM2602_FORMATS,},
b7138212
CC		 532 .capture = {
533 .stream_name = "Capture",
534 .channels_min = 2,
535 .channels_max = 2,
536 .rates = SSM2602_RATES,
5de27b6c 537 .formats = SSM2602_FORMATS,},
b7138212
CC		 538 .ops = {
539 .startup = ssm2602_startup,
540 .prepare = ssm2602_pcm_prepare,
541 .hw_params = ssm2602_hw_params,
542 .shutdown = ssm2602_shutdown,
b7138212
CC		 543 .digital_mute = ssm2602_mute,
544 .set_sysclk = ssm2602_set_dai_sysclk,
545 .set_fmt = ssm2602_set_dai_fmt,
546 }
547};
548EXPORT_SYMBOL_GPL(ssm2602_dai);
549
550static int ssm2602_suspend(struct platform_device *pdev, pm_message_t state)
551{
552 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
553 struct snd_soc_codec *codec = socdev->codec;
554
555 ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF);
556 return 0;
557}
558
559static int ssm2602_resume(struct platform_device *pdev)
560{
561 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
562 struct snd_soc_codec *codec = socdev->codec;
563 int i;
564 u8 data[2];
565 u16 *cache = codec->reg_cache;
566
567 /* Sync reg_cache with the hardware */
568 for (i = 0; i < ARRAY_SIZE(ssm2602_reg); i++) {
569 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
570 data[1] = cache[i] & 0x00ff;
571 codec->hw_write(codec->control_data, data, 2);
572 }
573 ssm2602_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
574 ssm2602_set_bias_level(codec, codec->suspend_bias_level);
575 return 0;
576}
577
578/*
579 * initialise the ssm2602 driver
580 * register the mixer and dsp interfaces with the kernel
581 */
582static int ssm2602_init(struct snd_soc_device *socdev)
583{
584 struct snd_soc_codec *codec = socdev->codec;
585 int reg, ret = 0;
586
587 codec->name = "SSM2602";
588 codec->owner = THIS_MODULE;
589 codec->read = ssm2602_read_reg_cache;
590 codec->write = ssm2602_write;
591 codec->set_bias_level = ssm2602_set_bias_level;
592 codec->dai = &ssm2602_dai;
593 codec->num_dai = 1;
594 codec->reg_cache_size = sizeof(ssm2602_reg);
595 codec->reg_cache = kmemdup(ssm2602_reg, sizeof(ssm2602_reg),
596 GFP_KERNEL);
597 if (codec->reg_cache == NULL)
598 return -ENOMEM;
599
600 ssm2602_reset(codec);
601
602 /* register pcms */
603 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
604 if (ret < 0) {
605 pr_err("ssm2602: failed to create pcms\n");
606 goto pcm_err;
607 }
608 /*power on device*/
609 ssm2602_write(codec, SSM2602_ACTIVE, 0);
610 /* set the update bits */
611 reg = ssm2602_read_reg_cache(codec, SSM2602_LINVOL);
612 ssm2602_write(codec, SSM2602_LINVOL, reg | LINVOL_LRIN_BOTH);
613 reg = ssm2602_read_reg_cache(codec, SSM2602_RINVOL);
614 ssm2602_write(codec, SSM2602_RINVOL, reg | RINVOL_RLIN_BOTH);
615 reg = ssm2602_read_reg_cache(codec, SSM2602_LOUT1V);
616 ssm2602_write(codec, SSM2602_LOUT1V, reg | LOUT1V_LRHP_BOTH);
617 reg = ssm2602_read_reg_cache(codec, SSM2602_ROUT1V);
618 ssm2602_write(codec, SSM2602_ROUT1V, reg | ROUT1V_RLHP_BOTH);
619 /*select Line in as default input*/
620 ssm2602_write(codec, SSM2602_APANA,
621 APANA_ENABLE_MIC_BOOST2 | APANA_SELECT_DAC |
622 APANA_ENABLE_MIC_BOOST);
623 ssm2602_write(codec, SSM2602_PWR, 0);
624
625 ssm2602_add_controls(codec);
626 ssm2602_add_widgets(codec);
968a6025 627 ret = snd_soc_init_card(socdev);
b7138212
CC		 628 if (ret < 0) {
629 pr_err("ssm2602: failed to register card\n");
630 goto card_err;
631 }
632
633 return ret;
634
635card_err:
636 snd_soc_free_pcms(socdev);
637 snd_soc_dapm_free(socdev);
638pcm_err:
639 kfree(codec->reg_cache);
640 return ret;
641}
642
643static struct snd_soc_device *ssm2602_socdev;
644
645#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
646/*
647 * ssm2602 2 wire address is determined by GPIO5
648 * state during powerup.
649 * low = 0x1a
650 * high = 0x1b
651 */
652static int ssm2602_i2c_probe(struct i2c_client *i2c,
653 const struct i2c_device_id *id)
654{
655 struct snd_soc_device *socdev = ssm2602_socdev;
656 struct snd_soc_codec *codec = socdev->codec;
657 int ret;
658
659 i2c_set_clientdata(i2c, codec);
660 codec->control_data = i2c;
661
662 ret = ssm2602_init(socdev);
663 if (ret < 0)
664 pr_err("failed to initialise SSM2602\n");
665
666 return ret;
667}
668
669static int ssm2602_i2c_remove(struct i2c_client *client)
670{
671 struct snd_soc_codec *codec = i2c_get_clientdata(client);
672 kfree(codec->reg_cache);
673 return 0;
674}
675
676static const struct i2c_device_id ssm2602_i2c_id[] = {
677 { "ssm2602", 0 },
678 { }
679};
680MODULE_DEVICE_TABLE(i2c, ssm2602_i2c_id);
681/* corgi i2c codec control layer */
682static struct i2c_driver ssm2602_i2c_driver = {
683 .driver = {
684 .name = "SSM2602 I2C Codec",
685 .owner = THIS_MODULE,
686 },
687 .probe = ssm2602_i2c_probe,
688 .remove = ssm2602_i2c_remove,
689 .id_table = ssm2602_i2c_id,
690};
691
692static int ssm2602_add_i2c_device(struct platform_device *pdev,
693 const struct ssm2602_setup_data *setup)
694{
695 struct i2c_board_info info;
696 struct i2c_adapter *adapter;
697 struct i2c_client *client;
698 int ret;
699
700 ret = i2c_add_driver(&ssm2602_i2c_driver);
701 if (ret != 0) {
702 dev_err(&pdev->dev, "can't add i2c driver\n");
703 return ret;
704 }
705 memset(&info, 0, sizeof(struct i2c_board_info));
706 info.addr = setup->i2c_address;
707 strlcpy(info.type, "ssm2602", I2C_NAME_SIZE);
708 adapter = i2c_get_adapter(setup->i2c_bus);
709 if (!adapter) {
710 dev_err(&pdev->dev, "can't get i2c adapter %d\n",
711 setup->i2c_bus);
712 goto err_driver;
713 }
714 client = i2c_new_device(adapter, &info);
715 i2c_put_adapter(adapter);
716 if (!client) {
717 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
718 (unsigned int)info.addr);
719 goto err_driver;
720 }
721 return 0;
722err_driver:
723 i2c_del_driver(&ssm2602_i2c_driver);
724 return -ENODEV;
725}
726#endif
727
728static int ssm2602_probe(struct platform_device *pdev)
729{
730 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
731 struct ssm2602_setup_data *setup;
732 struct snd_soc_codec *codec;
733 struct ssm2602_priv *ssm2602;
734 int ret = 0;
735
736 pr_info("ssm2602 Audio Codec %s", SSM2602_VERSION);
737
738 setup = socdev->codec_data;
739 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
740 if (codec == NULL)
741 return -ENOMEM;
742
743 ssm2602 = kzalloc(sizeof(struct ssm2602_priv), GFP_KERNEL);
744 if (ssm2602 == NULL) {
745 kfree(codec);
746 return -ENOMEM;
747 }
748
749 codec->private_data = ssm2602;
750 socdev->codec = codec;
751 mutex_init(&codec->mutex);
752 INIT_LIST_HEAD(&codec->dapm_widgets);
753 INIT_LIST_HEAD(&codec->dapm_paths);
754
755 ssm2602_socdev = socdev;
756#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
757 if (setup->i2c_address) {
758 codec->hw_write = (hw_write_t)i2c_master_send;
759 ret = ssm2602_add_i2c_device(pdev, setup);
760 }
761#else
762 /* other interfaces */
763#endif
764 return ret;
765}
766
767/* remove everything here */
768static int ssm2602_remove(struct platform_device *pdev)
769{
770 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
771 struct snd_soc_codec *codec = socdev->codec;
772
773 if (codec->control_data)
774 ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF);
775
776 snd_soc_free_pcms(socdev);
777 snd_soc_dapm_free(socdev);
778#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
779 i2c_unregister_device(codec->control_data);
780 i2c_del_driver(&ssm2602_i2c_driver);
781#endif
782 kfree(codec->private_data);
783 kfree(codec);
784
785 return 0;
786}
787
788struct snd_soc_codec_device soc_codec_dev_ssm2602 = {
789 .probe = ssm2602_probe,
790 .remove = ssm2602_remove,
791 .suspend = ssm2602_suspend,
792 .resume = ssm2602_resume,
793};
794EXPORT_SYMBOL_GPL(soc_codec_dev_ssm2602);
795
64089b84
MB		 796static int __devinit ssm2602_modinit(void)
797{
798 return snd_soc_register_dai(&ssm2602_dai);
799}
800module_init(ssm2602_modinit);
801
802static void __exit ssm2602_exit(void)
803{
804 snd_soc_unregister_dai(&ssm2602_dai);
805}
806module_exit(ssm2602_exit);
807
b7138212
CC		 808MODULE_DESCRIPTION("ASoC ssm2602 driver");
809MODULE_AUTHOR("Cliff Cai");
810MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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