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Merge branches 'fixes', 'pgt-next' and 'versatile' into devel
[deliverable/linux.git] / sound / soc / codecs / ssm2602.c
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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>
5a0e3ad6 36#include <linux/slab.h>
b7138212
CC		 37#include <sound/core.h>
38#include <sound/pcm.h>
39#include <sound/pcm_params.h>
40#include <sound/soc.h>
b7138212
CC		 41#include <sound/initval.h>
42
43#include "ssm2602.h"
44
b7138212
CC		 45#define SSM2602_VERSION "0.1"
46
b7138212
CC		 47/* codec private data */
48struct ssm2602_priv {
49 unsigned int sysclk;
f0fba2ad
LG		 50 enum snd_soc_control_type control_type;
51 void *control_data;
b7138212
CC		 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),
4b527e29 142SOC_SINGLE("Mic Boost2 (+20dB)", SSM2602_APANA, 7, 1, 0),
b7138212
CC		 143SOC_SINGLE("Mic Switch", SSM2602_APANA, 1, 1, 1),
144
145SOC_SINGLE("Sidetone Playback Volume", SSM2602_APANA, 6, 3, 1),
146
147SOC_SINGLE("ADC High Pass Filter Switch", SSM2602_APDIGI, 0, 1, 1),
148SOC_SINGLE("Store DC Offset Switch", SSM2602_APDIGI, 4, 1, 0),
149
150SOC_ENUM("Capture Source", ssm2602_enum[0]),
151
152SOC_ENUM("Playback De-emphasis", ssm2602_enum[1]),
153};
154
b7138212
CC		 155/* Output Mixer */
156static const struct snd_kcontrol_new ssm2602_output_mixer_controls[] = {
157SOC_DAPM_SINGLE("Line Bypass Switch", SSM2602_APANA, 3, 1, 0),
158SOC_DAPM_SINGLE("Mic Sidetone Switch", SSM2602_APANA, 5, 1, 0),
159SOC_DAPM_SINGLE("HiFi Playback Switch", SSM2602_APANA, 4, 1, 0),
160};
161
162/* Input mux */
163static const struct snd_kcontrol_new ssm2602_input_mux_controls =
164SOC_DAPM_ENUM("Input Select", ssm2602_enum[0]);
165
166static const struct snd_soc_dapm_widget ssm2602_dapm_widgets[] = {
167SND_SOC_DAPM_MIXER("Output Mixer", SSM2602_PWR, 4, 1,
168 &ssm2602_output_mixer_controls[0],
169 ARRAY_SIZE(ssm2602_output_mixer_controls)),
170SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SSM2602_PWR, 3, 1),
171SND_SOC_DAPM_OUTPUT("LOUT"),
172SND_SOC_DAPM_OUTPUT("LHPOUT"),
173SND_SOC_DAPM_OUTPUT("ROUT"),
174SND_SOC_DAPM_OUTPUT("RHPOUT"),
175SND_SOC_DAPM_ADC("ADC", "HiFi Capture", SSM2602_PWR, 2, 1),
176SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &ssm2602_input_mux_controls),
177SND_SOC_DAPM_PGA("Line Input", SSM2602_PWR, 0, 1, NULL, 0),
178SND_SOC_DAPM_MICBIAS("Mic Bias", SSM2602_PWR, 1, 1),
179SND_SOC_DAPM_INPUT("MICIN"),
180SND_SOC_DAPM_INPUT("RLINEIN"),
181SND_SOC_DAPM_INPUT("LLINEIN"),
182};
183
184static const struct snd_soc_dapm_route audio_conn[] = {
185 /* output mixer */
186 {"Output Mixer", "Line Bypass Switch", "Line Input"},
187 {"Output Mixer", "HiFi Playback Switch", "DAC"},
188 {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"},
189
190 /* outputs */
191 {"RHPOUT", NULL, "Output Mixer"},
192 {"ROUT", NULL, "Output Mixer"},
193 {"LHPOUT", NULL, "Output Mixer"},
194 {"LOUT", NULL, "Output Mixer"},
195
196 /* input mux */
197 {"Input Mux", "Line", "Line Input"},
198 {"Input Mux", "Mic", "Mic Bias"},
199 {"ADC", NULL, "Input Mux"},
200
201 /* inputs */
202 {"Line Input", NULL, "LLINEIN"},
203 {"Line Input", NULL, "RLINEIN"},
204 {"Mic Bias", NULL, "MICIN"},
205};
206
207static int ssm2602_add_widgets(struct snd_soc_codec *codec)
208{
ce6120cc 209 struct snd_soc_dapm_context *dapm = &codec->dapm;
b7138212 210
ce6120cc
LG		 211 snd_soc_dapm_new_controls(dapm, ssm2602_dapm_widgets,
212 ARRAY_SIZE(ssm2602_dapm_widgets));
213 snd_soc_dapm_add_routes(dapm, audio_conn, ARRAY_SIZE(audio_conn));
b7138212 214
b7138212
CC		 215 return 0;
216}
217
218struct _coeff_div {
219 u32 mclk;
220 u32 rate;
221 u16 fs;
222 u8 sr:4;
223 u8 bosr:1;
224 u8 usb:1;
225};
226
227/* codec mclk clock divider coefficients */
228static const struct _coeff_div coeff_div[] = {
229 /* 48k */
230 {12288000, 48000, 256, 0x0, 0x0, 0x0},
231 {18432000, 48000, 384, 0x0, 0x1, 0x0},
232 {12000000, 48000, 250, 0x0, 0x0, 0x1},
233
234 /* 32k */
235 {12288000, 32000, 384, 0x6, 0x0, 0x0},
236 {18432000, 32000, 576, 0x6, 0x1, 0x0},
237 {12000000, 32000, 375, 0x6, 0x0, 0x1},
238
239 /* 8k */
240 {12288000, 8000, 1536, 0x3, 0x0, 0x0},
241 {18432000, 8000, 2304, 0x3, 0x1, 0x0},
242 {11289600, 8000, 1408, 0xb, 0x0, 0x0},
243 {16934400, 8000, 2112, 0xb, 0x1, 0x0},
244 {12000000, 8000, 1500, 0x3, 0x0, 0x1},
245
246 /* 96k */
247 {12288000, 96000, 128, 0x7, 0x0, 0x0},
248 {18432000, 96000, 192, 0x7, 0x1, 0x0},
249 {12000000, 96000, 125, 0x7, 0x0, 0x1},
250
251 /* 44.1k */
252 {11289600, 44100, 256, 0x8, 0x0, 0x0},
253 {16934400, 44100, 384, 0x8, 0x1, 0x0},
254 {12000000, 44100, 272, 0x8, 0x1, 0x1},
255
256 /* 88.2k */
257 {11289600, 88200, 128, 0xf, 0x0, 0x0},
258 {16934400, 88200, 192, 0xf, 0x1, 0x0},
259 {12000000, 88200, 136, 0xf, 0x1, 0x1},
260};
261
262static inline int get_coeff(int mclk, int rate)
263{
264 int i;
265
266 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
267 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
268 return i;
269 }
270 return i;
271}
272
273static int ssm2602_hw_params(struct snd_pcm_substream *substream,
dee89c4d
MB		 274 struct snd_pcm_hw_params *params,
275 struct snd_soc_dai *dai)
b7138212
CC		 276{
277 u16 srate;
278 struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad 279 struct snd_soc_codec *codec = rtd->codec;
b2c812e2 280 struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
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;
f0fba2ad 323 struct snd_soc_codec *codec = rtd->codec;
b2c812e2 324 struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
faab5a32 325 struct i2c_client *i2c = codec->control_data;
b7138212
CC		 326 struct snd_pcm_runtime *master_runtime;
327
328 /* The DAI has shared clocks so if we already have a playback or
329 * capture going then constrain this substream to match it.
faab5a32 330 * TODO: the ssm2602 allows pairs of non-matching PB/REC rates
b7138212
CC		 331 */
332 if (ssm2602->master_substream) {
333 master_runtime = ssm2602->master_substream->runtime;
faab5a32
KB		 334 dev_dbg(&i2c->dev, "Constraining to %d bits at %dHz\n",
335 master_runtime->sample_bits,
336 master_runtime->rate);
337
f692fce0
CC		 338 if (master_runtime->rate != 0)
339 snd_pcm_hw_constraint_minmax(substream->runtime,
340 SNDRV_PCM_HW_PARAM_RATE,
341 master_runtime->rate,
342 master_runtime->rate);
343
344 if (master_runtime->sample_bits != 0)
345 snd_pcm_hw_constraint_minmax(substream->runtime,
346 SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
347 master_runtime->sample_bits,
348 master_runtime->sample_bits);
b7138212
CC		 349
350 ssm2602->slave_substream = substream;
351 } else
352 ssm2602->master_substream = substream;
353
354 return 0;
355}
356
dee89c4d
MB		 357static int ssm2602_pcm_prepare(struct snd_pcm_substream *substream,
358 struct snd_soc_dai *dai)
b7138212
CC		 359{
360 struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad 361 struct snd_soc_codec *codec = rtd->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;
f0fba2ad 372 struct snd_soc_codec *codec = rtd->codec;
b2c812e2 373 struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
f692fce0 374
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;
b2c812e2 401 struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
b7138212
CC		 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 }
ce6120cc 496 codec->dapm.bias_level = level;
b7138212
CC		 497 return 0;
498}
499
2552a710
CC		 500#define SSM2602_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_32000 |\
501 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
502 SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
b7138212 503
5de27b6c
KB		 504#define SSM2602_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
505 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
506
6335d055
EM		 507static struct snd_soc_dai_ops ssm2602_dai_ops = {
508 .startup = ssm2602_startup,
509 .prepare = ssm2602_pcm_prepare,
510 .hw_params = ssm2602_hw_params,
511 .shutdown = ssm2602_shutdown,
512 .digital_mute = ssm2602_mute,
513 .set_sysclk = ssm2602_set_dai_sysclk,
514 .set_fmt = ssm2602_set_dai_fmt,
515};
516
f0fba2ad
LG		 517static struct snd_soc_dai_driver ssm2602_dai = {
518 .name = "ssm2602-hifi",
b7138212
CC		 519 .playback = {
520 .stream_name = "Playback",
521 .channels_min = 2,
522 .channels_max = 2,
523 .rates = SSM2602_RATES,
5de27b6c 524 .formats = SSM2602_FORMATS,},
b7138212
CC		 525 .capture = {
526 .stream_name = "Capture",
527 .channels_min = 2,
528 .channels_max = 2,
529 .rates = SSM2602_RATES,
5de27b6c 530 .formats = SSM2602_FORMATS,},
6335d055 531 .ops = &ssm2602_dai_ops,
b7138212 532};
b7138212 533
f0fba2ad 534static int ssm2602_suspend(struct snd_soc_codec *codec, pm_message_t state)
b7138212 535{
b7138212
CC		 536 ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF);
537 return 0;
538}
539
f0fba2ad 540static int ssm2602_resume(struct snd_soc_codec *codec)
b7138212 541{
b7138212
CC		 542 int i;
543 u8 data[2];
544 u16 *cache = codec->reg_cache;
545
546 /* Sync reg_cache with the hardware */
547 for (i = 0; i < ARRAY_SIZE(ssm2602_reg); i++) {
548 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
549 data[1] = cache[i] & 0x00ff;
550 codec->hw_write(codec->control_data, data, 2);
551 }
552 ssm2602_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
b7138212
CC		 553 return 0;
554}
555
f0fba2ad 556static int ssm2602_probe(struct snd_soc_codec *codec)
b7138212 557{
f0fba2ad
LG		 558 struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
559 int ret = 0, reg;
560
561 pr_info("ssm2602 Audio Codec %s", SSM2602_VERSION);
562
f0fba2ad 563 codec->control_data = ssm2602->control_data;
b7138212
CC		 564
565 ssm2602_reset(codec);
566
b7138212
CC		 567 /*power on device*/
568 ssm2602_write(codec, SSM2602_ACTIVE, 0);
569 /* set the update bits */
570 reg = ssm2602_read_reg_cache(codec, SSM2602_LINVOL);
571 ssm2602_write(codec, SSM2602_LINVOL, reg | LINVOL_LRIN_BOTH);
572 reg = ssm2602_read_reg_cache(codec, SSM2602_RINVOL);
573 ssm2602_write(codec, SSM2602_RINVOL, reg | RINVOL_RLIN_BOTH);
574 reg = ssm2602_read_reg_cache(codec, SSM2602_LOUT1V);
575 ssm2602_write(codec, SSM2602_LOUT1V, reg | LOUT1V_LRHP_BOTH);
576 reg = ssm2602_read_reg_cache(codec, SSM2602_ROUT1V);
577 ssm2602_write(codec, SSM2602_ROUT1V, reg | ROUT1V_RLHP_BOTH);
578 /*select Line in as default input*/
4b527e29 579 ssm2602_write(codec, SSM2602_APANA, APANA_SELECT_DAC |
b7138212
CC		 580 APANA_ENABLE_MIC_BOOST);
581 ssm2602_write(codec, SSM2602_PWR, 0);
582
3e8e1952
IM		 583 snd_soc_add_controls(codec, ssm2602_snd_controls,
584 ARRAY_SIZE(ssm2602_snd_controls));
b7138212 585 ssm2602_add_widgets(codec);
b7138212
CC		 586
587 return ret;
f0fba2ad 588}
b7138212 589
f0fba2ad
LG		 590/* remove everything here */
591static int ssm2602_remove(struct snd_soc_codec *codec)
592{
593 ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF);
594 return 0;
b7138212
CC		 595}
596
f0fba2ad
LG		 597static struct snd_soc_codec_driver soc_codec_dev_ssm2602 = {
598 .probe = ssm2602_probe,
599 .remove = ssm2602_remove,
600 .suspend = ssm2602_suspend,
601 .resume = ssm2602_resume,
602 .read = ssm2602_read_reg_cache,
603 .write = ssm2602_write,
604 .set_bias_level = ssm2602_set_bias_level,
605 .reg_cache_size = sizeof(ssm2602_reg),
606 .reg_word_size = sizeof(u16),
607 .reg_cache_default = ssm2602_reg,
608};
b7138212
CC		 609
610#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
611/*
612 * ssm2602 2 wire address is determined by GPIO5
613 * state during powerup.
614 * low = 0x1a
615 * high = 0x1b
616 */
617static int ssm2602_i2c_probe(struct i2c_client *i2c,
618 const struct i2c_device_id *id)
619{
f0fba2ad 620 struct ssm2602_priv *ssm2602;
b7138212
CC		 621 int ret;
622
f0fba2ad
LG		 623 ssm2602 = kzalloc(sizeof(struct ssm2602_priv), GFP_KERNEL);
624 if (ssm2602 == NULL)
625 return -ENOMEM;
b7138212 626
f0fba2ad
LG		 627 i2c_set_clientdata(i2c, ssm2602);
628 ssm2602->control_data = i2c;
629 ssm2602->control_type = SND_SOC_I2C;
b7138212 630
f0fba2ad
LG		 631 ret = snd_soc_register_codec(&i2c->dev,
632 &soc_codec_dev_ssm2602, &ssm2602_dai, 1);
633 if (ret < 0)
634 kfree(ssm2602);
b7138212
CC		 635 return ret;
636}
637
638static int ssm2602_i2c_remove(struct i2c_client *client)
639{
f0fba2ad
LG		 640 snd_soc_unregister_codec(&client->dev);
641 kfree(i2c_get_clientdata(client));
b7138212
CC		 642 return 0;
643}
644
645static const struct i2c_device_id ssm2602_i2c_id[] = {
646 { "ssm2602", 0 },
647 { }
648};
649MODULE_DEVICE_TABLE(i2c, ssm2602_i2c_id);
f0fba2ad 650
b7138212
CC		 651/* corgi i2c codec control layer */
652static struct i2c_driver ssm2602_i2c_driver = {
653 .driver = {
f0fba2ad 654 .name = "ssm2602-codec",
b7138212
CC		 655 .owner = THIS_MODULE,
656 },
657 .probe = ssm2602_i2c_probe,
658 .remove = ssm2602_i2c_remove,
659 .id_table = ssm2602_i2c_id,
660};
b7138212
CC		 661#endif
662
f0fba2ad
LG		 663
664static int __init ssm2602_modinit(void)
b7138212 665{
b7138212 666 int ret = 0;
b7138212 667#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
f0fba2ad
LG		 668 ret = i2c_add_driver(&ssm2602_i2c_driver);
669 if (ret != 0) {
670 printk(KERN_ERR "Failed to register SSM2602 I2C driver: %d\n",
671 ret);
b7138212 672 }
b7138212
CC		 673#endif
674 return ret;
675}
f0fba2ad 676module_init(ssm2602_modinit);
b7138212 677
f0fba2ad 678static void __exit ssm2602_exit(void)
b7138212 679{
b7138212 680#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
b7138212
CC		 681 i2c_del_driver(&ssm2602_i2c_driver);
682#endif
64089b84
MB		 683}
684module_exit(ssm2602_exit);
685
b7138212
CC		 686MODULE_DESCRIPTION("ASoC ssm2602 driver");
687MODULE_AUTHOR("Cliff Cai");
688MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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