projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
ASoC: make ops a pointer in 'struct snd_soc_dai'
[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
b7138212
CC		 154/* Output Mixer */
155static const struct snd_kcontrol_new ssm2602_output_mixer_controls[] = {
156SOC_DAPM_SINGLE("Line Bypass Switch", SSM2602_APANA, 3, 1, 0),
157SOC_DAPM_SINGLE("Mic Sidetone Switch", SSM2602_APANA, 5, 1, 0),
158SOC_DAPM_SINGLE("HiFi Playback Switch", SSM2602_APANA, 4, 1, 0),
159};
160
161/* Input mux */
162static const struct snd_kcontrol_new ssm2602_input_mux_controls =
163SOC_DAPM_ENUM("Input Select", ssm2602_enum[0]);
164
165static const struct snd_soc_dapm_widget ssm2602_dapm_widgets[] = {
166SND_SOC_DAPM_MIXER("Output Mixer", SSM2602_PWR, 4, 1,
167 &ssm2602_output_mixer_controls[0],
168 ARRAY_SIZE(ssm2602_output_mixer_controls)),
169SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SSM2602_PWR, 3, 1),
170SND_SOC_DAPM_OUTPUT("LOUT"),
171SND_SOC_DAPM_OUTPUT("LHPOUT"),
172SND_SOC_DAPM_OUTPUT("ROUT"),
173SND_SOC_DAPM_OUTPUT("RHPOUT"),
174SND_SOC_DAPM_ADC("ADC", "HiFi Capture", SSM2602_PWR, 2, 1),
175SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &ssm2602_input_mux_controls),
176SND_SOC_DAPM_PGA("Line Input", SSM2602_PWR, 0, 1, NULL, 0),
177SND_SOC_DAPM_MICBIAS("Mic Bias", SSM2602_PWR, 1, 1),
178SND_SOC_DAPM_INPUT("MICIN"),
179SND_SOC_DAPM_INPUT("RLINEIN"),
180SND_SOC_DAPM_INPUT("LLINEIN"),
181};
182
183static const struct snd_soc_dapm_route audio_conn[] = {
184 /* output mixer */
185 {"Output Mixer", "Line Bypass Switch", "Line Input"},
186 {"Output Mixer", "HiFi Playback Switch", "DAC"},
187 {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"},
188
189 /* outputs */
190 {"RHPOUT", NULL, "Output Mixer"},
191 {"ROUT", NULL, "Output Mixer"},
192 {"LHPOUT", NULL, "Output Mixer"},
193 {"LOUT", NULL, "Output Mixer"},
194
195 /* input mux */
196 {"Input Mux", "Line", "Line Input"},
197 {"Input Mux", "Mic", "Mic Bias"},
198 {"ADC", NULL, "Input Mux"},
199
200 /* inputs */
201 {"Line Input", NULL, "LLINEIN"},
202 {"Line Input", NULL, "RLINEIN"},
203 {"Mic Bias", NULL, "MICIN"},
204};
205
206static int ssm2602_add_widgets(struct snd_soc_codec *codec)
207{
208 snd_soc_dapm_new_controls(codec, ssm2602_dapm_widgets,
209 ARRAY_SIZE(ssm2602_dapm_widgets));
210
211 snd_soc_dapm_add_routes(codec, audio_conn, ARRAY_SIZE(audio_conn));
212
213 snd_soc_dapm_new_widgets(codec);
214 return 0;
215}
216
217struct _coeff_div {
218 u32 mclk;
219 u32 rate;
220 u16 fs;
221 u8 sr:4;
222 u8 bosr:1;
223 u8 usb:1;
224};
225
226/* codec mclk clock divider coefficients */
227static const struct _coeff_div coeff_div[] = {
228 /* 48k */
229 {12288000, 48000, 256, 0x0, 0x0, 0x0},
230 {18432000, 48000, 384, 0x0, 0x1, 0x0},
231 {12000000, 48000, 250, 0x0, 0x0, 0x1},
232
233 /* 32k */
234 {12288000, 32000, 384, 0x6, 0x0, 0x0},
235 {18432000, 32000, 576, 0x6, 0x1, 0x0},
236 {12000000, 32000, 375, 0x6, 0x0, 0x1},
237
238 /* 8k */
239 {12288000, 8000, 1536, 0x3, 0x0, 0x0},
240 {18432000, 8000, 2304, 0x3, 0x1, 0x0},
241 {11289600, 8000, 1408, 0xb, 0x0, 0x0},
242 {16934400, 8000, 2112, 0xb, 0x1, 0x0},
243 {12000000, 8000, 1500, 0x3, 0x0, 0x1},
244
245 /* 96k */
246 {12288000, 96000, 128, 0x7, 0x0, 0x0},
247 {18432000, 96000, 192, 0x7, 0x1, 0x0},
248 {12000000, 96000, 125, 0x7, 0x0, 0x1},
249
250 /* 44.1k */
251 {11289600, 44100, 256, 0x8, 0x0, 0x0},
252 {16934400, 44100, 384, 0x8, 0x1, 0x0},
253 {12000000, 44100, 272, 0x8, 0x1, 0x1},
254
255 /* 88.2k */
256 {11289600, 88200, 128, 0xf, 0x0, 0x0},
257 {16934400, 88200, 192, 0xf, 0x1, 0x0},
258 {12000000, 88200, 136, 0xf, 0x1, 0x1},
259};
260
261static inline int get_coeff(int mclk, int rate)
262{
263 int i;
264
265 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
266 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
267 return i;
268 }
269 return i;
270}
271
272static int ssm2602_hw_params(struct snd_pcm_substream *substream,
dee89c4d
MB		 273 struct snd_pcm_hw_params *params,
274 struct snd_soc_dai *dai)
b7138212
CC		 275{
276 u16 srate;
277 struct snd_soc_pcm_runtime *rtd = substream->private_data;
278 struct snd_soc_device *socdev = rtd->socdev;
6627a653 279 struct snd_soc_codec *codec = socdev->card->codec;
b7138212 280 struct ssm2602_priv *ssm2602 = codec->private_data;
faab5a32 281 struct i2c_client *i2c = codec->control_data;
b7138212
CC		 282 u16 iface = ssm2602_read_reg_cache(codec, SSM2602_IFACE) & 0xfff3;
283 int i = get_coeff(ssm2602->sysclk, params_rate(params));
284
faab5a32
KB		 285 if (substream == ssm2602->slave_substream) {
286 dev_dbg(&i2c->dev, "Ignoring hw_params for slave substream\n");
287 return 0;
288 }
289
b7138212
CC		 290 /*no match is found*/
291 if (i == ARRAY_SIZE(coeff_div))
292 return -EINVAL;
293
294 srate = (coeff_div[i].sr << 2) |
295 (coeff_div[i].bosr << 1) | coeff_div[i].usb;
296
297 ssm2602_write(codec, SSM2602_ACTIVE, 0);
298 ssm2602_write(codec, SSM2602_SRATE, srate);
299
300 /* bit size */
301 switch (params_format(params)) {
302 case SNDRV_PCM_FORMAT_S16_LE:
303 break;
304 case SNDRV_PCM_FORMAT_S20_3LE:
305 iface |= 0x0004;
306 break;
307 case SNDRV_PCM_FORMAT_S24_LE:
308 iface |= 0x0008;
309 break;
310 case SNDRV_PCM_FORMAT_S32_LE:
311 iface |= 0x000c;
312 break;
313 }
314 ssm2602_write(codec, SSM2602_IFACE, iface);
315 ssm2602_write(codec, SSM2602_ACTIVE, ACTIVE_ACTIVATE_CODEC);
316 return 0;
317}
318
dee89c4d
MB		 319static int ssm2602_startup(struct snd_pcm_substream *substream,
320 struct snd_soc_dai *dai)
b7138212
CC		 321{
322 struct snd_soc_pcm_runtime *rtd = substream->private_data;
323 struct snd_soc_device *socdev = rtd->socdev;
6627a653 324 struct snd_soc_codec *codec = socdev->card->codec;
b7138212 325 struct ssm2602_priv *ssm2602 = codec->private_data;
faab5a32 326 struct i2c_client *i2c = codec->control_data;
b7138212
CC		 327 struct snd_pcm_runtime *master_runtime;
328
329 /* The DAI has shared clocks so if we already have a playback or
330 * capture going then constrain this substream to match it.
faab5a32 331 * TODO: the ssm2602 allows pairs of non-matching PB/REC rates
b7138212
CC		 332 */
333 if (ssm2602->master_substream) {
334 master_runtime = ssm2602->master_substream->runtime;
faab5a32
KB		 335 dev_dbg(&i2c->dev, "Constraining to %d bits at %dHz\n",
336 master_runtime->sample_bits,
337 master_runtime->rate);
338
b7138212
CC		 339 snd_pcm_hw_constraint_minmax(substream->runtime,
340 SNDRV_PCM_HW_PARAM_RATE,
341 master_runtime->rate,
342 master_runtime->rate);
343
344 snd_pcm_hw_constraint_minmax(substream->runtime,
345 SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
346 master_runtime->sample_bits,
347 master_runtime->sample_bits);
348
349 ssm2602->slave_substream = substream;
350 } else
351 ssm2602->master_substream = substream;
352
353 return 0;
354}
355
dee89c4d
MB		 356static int ssm2602_pcm_prepare(struct snd_pcm_substream *substream,
357 struct snd_soc_dai *dai)
b7138212
CC		 358{
359 struct snd_soc_pcm_runtime *rtd = substream->private_data;
360 struct snd_soc_device *socdev = rtd->socdev;
6627a653 361 struct snd_soc_codec *codec = socdev->card->codec;
b7138212
CC		 362 /* set active */
363 ssm2602_write(codec, SSM2602_ACTIVE, ACTIVE_ACTIVATE_CODEC);
364
365 return 0;
366}
367
dee89c4d
MB		 368static void ssm2602_shutdown(struct snd_pcm_substream *substream,
369 struct snd_soc_dai *dai)
b7138212
CC		 370{
371 struct snd_soc_pcm_runtime *rtd = substream->private_data;
372 struct snd_soc_device *socdev = rtd->socdev;
6627a653 373 struct snd_soc_codec *codec = socdev->card->codec;
faab5a32 374 struct ssm2602_priv *ssm2602 = codec->private_data;
b7138212
CC		 375 /* deactivate */
376 if (!codec->active)
377 ssm2602_write(codec, SSM2602_ACTIVE, 0);
faab5a32
KB		 378
379 if (ssm2602->master_substream == substream)
380 ssm2602->master_substream = ssm2602->slave_substream;
381
382 ssm2602->slave_substream = NULL;
b7138212
CC		 383}
384
385static int ssm2602_mute(struct snd_soc_dai *dai, int mute)
386{
387 struct snd_soc_codec *codec = dai->codec;
388 u16 mute_reg = ssm2602_read_reg_cache(codec, SSM2602_APDIGI) & ~APDIGI_ENABLE_DAC_MUTE;
389 if (mute)
390 ssm2602_write(codec, SSM2602_APDIGI,
391 mute_reg | APDIGI_ENABLE_DAC_MUTE);
392 else
393 ssm2602_write(codec, SSM2602_APDIGI, mute_reg);
394 return 0;
395}
396
397static int ssm2602_set_dai_sysclk(struct snd_soc_dai *codec_dai,
398 int clk_id, unsigned int freq, int dir)
399{
400 struct snd_soc_codec *codec = codec_dai->codec;
401 struct ssm2602_priv *ssm2602 = codec->private_data;
402 switch (freq) {
403 case 11289600:
404 case 12000000:
405 case 12288000:
406 case 16934400:
407 case 18432000:
408 ssm2602->sysclk = freq;
409 return 0;
410 }
411 return -EINVAL;
412}
413
414static int ssm2602_set_dai_fmt(struct snd_soc_dai *codec_dai,
415 unsigned int fmt)
416{
417 struct snd_soc_codec *codec = codec_dai->codec;
418 u16 iface = 0;
419
420 /* set master/slave audio interface */
421 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
422 case SND_SOC_DAIFMT_CBM_CFM:
423 iface |= 0x0040;
424 break;
425 case SND_SOC_DAIFMT_CBS_CFS:
426 break;
427 default:
428 return -EINVAL;
429 }
430
431 /* interface format */
432 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
433 case SND_SOC_DAIFMT_I2S:
434 iface |= 0x0002;
435 break;
436 case SND_SOC_DAIFMT_RIGHT_J:
437 break;
438 case SND_SOC_DAIFMT_LEFT_J:
439 iface |= 0x0001;
440 break;
441 case SND_SOC_DAIFMT_DSP_A:
c6913485 442 iface |= 0x0013;
b7138212
CC		 443 break;
444 case SND_SOC_DAIFMT_DSP_B:
c6913485 445 iface |= 0x0003;
b7138212
CC		 446 break;
447 default:
448 return -EINVAL;
449 }
450
451 /* clock inversion */
452 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
453 case SND_SOC_DAIFMT_NB_NF:
454 break;
455 case SND_SOC_DAIFMT_IB_IF:
456 iface |= 0x0090;
457 break;
458 case SND_SOC_DAIFMT_IB_NF:
459 iface |= 0x0080;
460 break;
461 case SND_SOC_DAIFMT_NB_IF:
462 iface |= 0x0010;
463 break;
464 default:
465 return -EINVAL;
466 }
467
468 /* set iface */
469 ssm2602_write(codec, SSM2602_IFACE, iface);
470 return 0;
471}
472
473static int ssm2602_set_bias_level(struct snd_soc_codec *codec,
474 enum snd_soc_bias_level level)
475{
476 u16 reg = ssm2602_read_reg_cache(codec, SSM2602_PWR) & 0xff7f;
477
478 switch (level) {
479 case SND_SOC_BIAS_ON:
480 /* vref/mid, osc on, dac unmute */
481 ssm2602_write(codec, SSM2602_PWR, reg);
482 break;
483 case SND_SOC_BIAS_PREPARE:
484 break;
485 case SND_SOC_BIAS_STANDBY:
486 /* everything off except vref/vmid, */
487 ssm2602_write(codec, SSM2602_PWR, reg | PWR_CLK_OUT_PDN);
488 break;
489 case SND_SOC_BIAS_OFF:
490 /* everything off, dac mute, inactive */
491 ssm2602_write(codec, SSM2602_ACTIVE, 0);
492 ssm2602_write(codec, SSM2602_PWR, 0xffff);
493 break;
494
495 }
496 codec->bias_level = level;
497 return 0;
498}
499
500#define SSM2602_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
501 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
502 SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
503 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
504 SNDRV_PCM_RATE_96000)
505
5de27b6c
KB		 506#define SSM2602_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
507 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
508
6335d055
EM		 509static struct snd_soc_dai_ops ssm2602_dai_ops = {
510 .startup = ssm2602_startup,
511 .prepare = ssm2602_pcm_prepare,
512 .hw_params = ssm2602_hw_params,
513 .shutdown = ssm2602_shutdown,
514 .digital_mute = ssm2602_mute,
515 .set_sysclk = ssm2602_set_dai_sysclk,
516 .set_fmt = ssm2602_set_dai_fmt,
517};
518
b7138212
CC		 519struct snd_soc_dai ssm2602_dai = {
520 .name = "SSM2602",
521 .playback = {
522 .stream_name = "Playback",
523 .channels_min = 2,
524 .channels_max = 2,
525 .rates = SSM2602_RATES,
5de27b6c 526 .formats = SSM2602_FORMATS,},
b7138212
CC		 527 .capture = {
528 .stream_name = "Capture",
529 .channels_min = 2,
530 .channels_max = 2,
531 .rates = SSM2602_RATES,
5de27b6c 532 .formats = SSM2602_FORMATS,},
6335d055 533 .ops = &ssm2602_dai_ops,
b7138212
CC		 534};
535EXPORT_SYMBOL_GPL(ssm2602_dai);
536
537static int ssm2602_suspend(struct platform_device *pdev, pm_message_t state)
538{
539 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
6627a653 540 struct snd_soc_codec *codec = socdev->card->codec;
b7138212
CC		 541
542 ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF);
543 return 0;
544}
545
546static int ssm2602_resume(struct platform_device *pdev)
547{
548 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
6627a653 549 struct snd_soc_codec *codec = socdev->card->codec;
b7138212
CC		 550 int i;
551 u8 data[2];
552 u16 *cache = codec->reg_cache;
553
554 /* Sync reg_cache with the hardware */
555 for (i = 0; i < ARRAY_SIZE(ssm2602_reg); i++) {
556 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
557 data[1] = cache[i] & 0x00ff;
558 codec->hw_write(codec->control_data, data, 2);
559 }
560 ssm2602_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
561 ssm2602_set_bias_level(codec, codec->suspend_bias_level);
562 return 0;
563}
564
565/*
566 * initialise the ssm2602 driver
567 * register the mixer and dsp interfaces with the kernel
568 */
569static int ssm2602_init(struct snd_soc_device *socdev)
570{
6627a653 571 struct snd_soc_codec *codec = socdev->card->codec;
b7138212
CC		 572 int reg, ret = 0;
573
574 codec->name = "SSM2602";
575 codec->owner = THIS_MODULE;
576 codec->read = ssm2602_read_reg_cache;
577 codec->write = ssm2602_write;
578 codec->set_bias_level = ssm2602_set_bias_level;
579 codec->dai = &ssm2602_dai;
580 codec->num_dai = 1;
581 codec->reg_cache_size = sizeof(ssm2602_reg);
582 codec->reg_cache = kmemdup(ssm2602_reg, sizeof(ssm2602_reg),
583 GFP_KERNEL);
584 if (codec->reg_cache == NULL)
585 return -ENOMEM;
586
587 ssm2602_reset(codec);
588
589 /* register pcms */
590 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
591 if (ret < 0) {
592 pr_err("ssm2602: failed to create pcms\n");
593 goto pcm_err;
594 }
595 /*power on device*/
596 ssm2602_write(codec, SSM2602_ACTIVE, 0);
597 /* set the update bits */
598 reg = ssm2602_read_reg_cache(codec, SSM2602_LINVOL);
599 ssm2602_write(codec, SSM2602_LINVOL, reg | LINVOL_LRIN_BOTH);
600 reg = ssm2602_read_reg_cache(codec, SSM2602_RINVOL);
601 ssm2602_write(codec, SSM2602_RINVOL, reg | RINVOL_RLIN_BOTH);
602 reg = ssm2602_read_reg_cache(codec, SSM2602_LOUT1V);
603 ssm2602_write(codec, SSM2602_LOUT1V, reg | LOUT1V_LRHP_BOTH);
604 reg = ssm2602_read_reg_cache(codec, SSM2602_ROUT1V);
605 ssm2602_write(codec, SSM2602_ROUT1V, reg | ROUT1V_RLHP_BOTH);
606 /*select Line in as default input*/
607 ssm2602_write(codec, SSM2602_APANA,
608 APANA_ENABLE_MIC_BOOST2 | APANA_SELECT_DAC |
609 APANA_ENABLE_MIC_BOOST);
610 ssm2602_write(codec, SSM2602_PWR, 0);
611
3e8e1952
IM		 612 snd_soc_add_controls(codec, ssm2602_snd_controls,
613 ARRAY_SIZE(ssm2602_snd_controls));
b7138212 614 ssm2602_add_widgets(codec);
968a6025 615 ret = snd_soc_init_card(socdev);
b7138212
CC		 616 if (ret < 0) {
617 pr_err("ssm2602: failed to register card\n");
618 goto card_err;
619 }
620
621 return ret;
622
623card_err:
624 snd_soc_free_pcms(socdev);
625 snd_soc_dapm_free(socdev);
626pcm_err:
627 kfree(codec->reg_cache);
628 return ret;
629}
630
631static struct snd_soc_device *ssm2602_socdev;
632
633#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
634/*
635 * ssm2602 2 wire address is determined by GPIO5
636 * state during powerup.
637 * low = 0x1a
638 * high = 0x1b
639 */
640static int ssm2602_i2c_probe(struct i2c_client *i2c,
641 const struct i2c_device_id *id)
642{
643 struct snd_soc_device *socdev = ssm2602_socdev;
6627a653 644 struct snd_soc_codec *codec = socdev->card->codec;
b7138212
CC		 645 int ret;
646
647 i2c_set_clientdata(i2c, codec);
648 codec->control_data = i2c;
649
650 ret = ssm2602_init(socdev);
651 if (ret < 0)
652 pr_err("failed to initialise SSM2602\n");
653
654 return ret;
655}
656
657static int ssm2602_i2c_remove(struct i2c_client *client)
658{
659 struct snd_soc_codec *codec = i2c_get_clientdata(client);
660 kfree(codec->reg_cache);
661 return 0;
662}
663
664static const struct i2c_device_id ssm2602_i2c_id[] = {
665 { "ssm2602", 0 },
666 { }
667};
668MODULE_DEVICE_TABLE(i2c, ssm2602_i2c_id);
669/* corgi i2c codec control layer */
670static struct i2c_driver ssm2602_i2c_driver = {
671 .driver = {
672 .name = "SSM2602 I2C Codec",
673 .owner = THIS_MODULE,
674 },
675 .probe = ssm2602_i2c_probe,
676 .remove = ssm2602_i2c_remove,
677 .id_table = ssm2602_i2c_id,
678};
679
680static int ssm2602_add_i2c_device(struct platform_device *pdev,
681 const struct ssm2602_setup_data *setup)
682{
683 struct i2c_board_info info;
684 struct i2c_adapter *adapter;
685 struct i2c_client *client;
686 int ret;
687
688 ret = i2c_add_driver(&ssm2602_i2c_driver);
689 if (ret != 0) {
690 dev_err(&pdev->dev, "can't add i2c driver\n");
691 return ret;
692 }
693 memset(&info, 0, sizeof(struct i2c_board_info));
694 info.addr = setup->i2c_address;
695 strlcpy(info.type, "ssm2602", I2C_NAME_SIZE);
696 adapter = i2c_get_adapter(setup->i2c_bus);
697 if (!adapter) {
698 dev_err(&pdev->dev, "can't get i2c adapter %d\n",
699 setup->i2c_bus);
700 goto err_driver;
701 }
702 client = i2c_new_device(adapter, &info);
703 i2c_put_adapter(adapter);
704 if (!client) {
705 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
706 (unsigned int)info.addr);
707 goto err_driver;
708 }
709 return 0;
710err_driver:
711 i2c_del_driver(&ssm2602_i2c_driver);
712 return -ENODEV;
713}
714#endif
715
716static int ssm2602_probe(struct platform_device *pdev)
717{
718 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
719 struct ssm2602_setup_data *setup;
720 struct snd_soc_codec *codec;
721 struct ssm2602_priv *ssm2602;
722 int ret = 0;
723
724 pr_info("ssm2602 Audio Codec %s", SSM2602_VERSION);
725
726 setup = socdev->codec_data;
727 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
728 if (codec == NULL)
729 return -ENOMEM;
730
731 ssm2602 = kzalloc(sizeof(struct ssm2602_priv), GFP_KERNEL);
732 if (ssm2602 == NULL) {
733 kfree(codec);
734 return -ENOMEM;
735 }
736
737 codec->private_data = ssm2602;
6627a653 738 socdev->card->codec = codec;
b7138212
CC		 739 mutex_init(&codec->mutex);
740 INIT_LIST_HEAD(&codec->dapm_widgets);
741 INIT_LIST_HEAD(&codec->dapm_paths);
742
743 ssm2602_socdev = socdev;
744#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
745 if (setup->i2c_address) {
746 codec->hw_write = (hw_write_t)i2c_master_send;
747 ret = ssm2602_add_i2c_device(pdev, setup);
748 }
749#else
750 /* other interfaces */
751#endif
752 return ret;
753}
754
755/* remove everything here */
756static int ssm2602_remove(struct platform_device *pdev)
757{
758 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
6627a653 759 struct snd_soc_codec *codec = socdev->card->codec;
b7138212
CC		 760
761 if (codec->control_data)
762 ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF);
763
764 snd_soc_free_pcms(socdev);
765 snd_soc_dapm_free(socdev);
766#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
767 i2c_unregister_device(codec->control_data);
768 i2c_del_driver(&ssm2602_i2c_driver);
769#endif
770 kfree(codec->private_data);
771 kfree(codec);
772
773 return 0;
774}
775
776struct snd_soc_codec_device soc_codec_dev_ssm2602 = {
777 .probe = ssm2602_probe,
778 .remove = ssm2602_remove,
779 .suspend = ssm2602_suspend,
780 .resume = ssm2602_resume,
781};
782EXPORT_SYMBOL_GPL(soc_codec_dev_ssm2602);
783
c9b3a40f 784static int __init ssm2602_modinit(void)
64089b84
MB		 785{
786 return snd_soc_register_dai(&ssm2602_dai);
787}
788module_init(ssm2602_modinit);
789
790static void __exit ssm2602_exit(void)
791{
792 snd_soc_unregister_dai(&ssm2602_dai);
793}
794module_exit(ssm2602_exit);
795
b7138212
CC		 796MODULE_DESCRIPTION("ASoC ssm2602 driver");
797MODULE_AUTHOR("Cliff Cai");
798MODULE_LICENSE("GPL");
Linux kernel - Deliverables
This page took 0.066267 seconds and 5 git commands to generate.