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11#include <linux/module.h>
12#include <linux/init.h>
13#include <linux/i2c.h>
14#include <linux/delay.h>
15#include <linux/sigma.h>
16#include <linux/slab.h>
17#include <sound/core.h>
18#include <sound/pcm.h>
19#include <sound/pcm_params.h>
20#include <sound/soc.h>
21
22#include "adau1701.h"
23
24#define ADAU1701_DSPCTRL 0x1c
25#define ADAU1701_SEROCTL 0x1e
26#define ADAU1701_SERICTL 0x1f
27
28#define ADAU1701_AUXNPOW 0x22
29
30#define ADAU1701_OSCIPOW 0x26
31#define ADAU1701_DACSET 0x27
32
33#define ADAU1701_NUM_REGS 0x28
34
35#define ADAU1701_DSPCTRL_CR (1 << 2)
36#define ADAU1701_DSPCTRL_DAM (1 << 3)
37#define ADAU1701_DSPCTRL_ADM (1 << 4)
38#define ADAU1701_DSPCTRL_SR_48 0x00
39#define ADAU1701_DSPCTRL_SR_96 0x01
40#define ADAU1701_DSPCTRL_SR_192 0x02
41#define ADAU1701_DSPCTRL_SR_MASK 0x03
42
43#define ADAU1701_SEROCTL_INV_LRCLK 0x2000
44#define ADAU1701_SEROCTL_INV_BCLK 0x1000
45#define ADAU1701_SEROCTL_MASTER 0x0800
46
47#define ADAU1701_SEROCTL_OBF16 0x0000
48#define ADAU1701_SEROCTL_OBF8 0x0200
49#define ADAU1701_SEROCTL_OBF4 0x0400
50#define ADAU1701_SEROCTL_OBF2 0x0600
51#define ADAU1701_SEROCTL_OBF_MASK 0x0600
52
53#define ADAU1701_SEROCTL_OLF1024 0x0000
54#define ADAU1701_SEROCTL_OLF512 0x0080
55#define ADAU1701_SEROCTL_OLF256 0x0100
56#define ADAU1701_SEROCTL_OLF_MASK 0x0180
57
58#define ADAU1701_SEROCTL_MSB_DEALY1 0x0000
59#define ADAU1701_SEROCTL_MSB_DEALY0 0x0004
60#define ADAU1701_SEROCTL_MSB_DEALY8 0x0008
61#define ADAU1701_SEROCTL_MSB_DEALY12 0x000c
62#define ADAU1701_SEROCTL_MSB_DEALY16 0x0010
63#define ADAU1701_SEROCTL_MSB_DEALY_MASK 0x001c
64
65#define ADAU1701_SEROCTL_WORD_LEN_24 0x0000
66#define ADAU1701_SEROCTL_WORD_LEN_20 0x0001
67#define ADAU1701_SEROCTL_WORD_LEN_16 0x0010
68#define ADAU1701_SEROCTL_WORD_LEN_MASK 0x0003
69
70#define ADAU1701_AUXNPOW_VBPD 0x40
71#define ADAU1701_AUXNPOW_VRPD 0x20
72
73#define ADAU1701_SERICTL_I2S 0
74#define ADAU1701_SERICTL_LEFTJ 1
75#define ADAU1701_SERICTL_TDM 2
76#define ADAU1701_SERICTL_RIGHTJ_24 3
77#define ADAU1701_SERICTL_RIGHTJ_20 4
78#define ADAU1701_SERICTL_RIGHTJ_18 5
79#define ADAU1701_SERICTL_RIGHTJ_16 6
80#define ADAU1701_SERICTL_MODE_MASK 7
81#define ADAU1701_SERICTL_INV_BCLK BIT(3)
82#define ADAU1701_SERICTL_INV_LRCLK BIT(4)
83
84#define ADAU1701_OSCIPOW_OPD 0x04
85#define ADAU1701_DACSET_DACINIT 1
86
87#define ADAU1701_FIRMWARE "adau1701.bin"
88
89struct adau1701 {
90 unsigned int dai_fmt;
91};
92
93static const struct snd_kcontrol_new adau1701_controls[] = {
94 SOC_SINGLE("Master Capture Switch", ADAU1701_DSPCTRL, 4, 1, 0),
95};
96
97static const struct snd_soc_dapm_widget adau1701_dapm_widgets[] = {
98 SND_SOC_DAPM_DAC("DAC0", "Playback", ADAU1701_AUXNPOW, 3, 1),
99 SND_SOC_DAPM_DAC("DAC1", "Playback", ADAU1701_AUXNPOW, 2, 1),
100 SND_SOC_DAPM_DAC("DAC2", "Playback", ADAU1701_AUXNPOW, 1, 1),
101 SND_SOC_DAPM_DAC("DAC3", "Playback", ADAU1701_AUXNPOW, 0, 1),
102 SND_SOC_DAPM_ADC("ADC", "Capture", ADAU1701_AUXNPOW, 7, 1),
103
104 SND_SOC_DAPM_OUTPUT("OUT0"),
105 SND_SOC_DAPM_OUTPUT("OUT1"),
106 SND_SOC_DAPM_OUTPUT("OUT2"),
107 SND_SOC_DAPM_OUTPUT("OUT3"),
108 SND_SOC_DAPM_INPUT("IN0"),
109 SND_SOC_DAPM_INPUT("IN1"),
110};
111
112static const struct snd_soc_dapm_route adau1701_dapm_routes[] = {
113 { "OUT0", NULL, "DAC0" },
114 { "OUT1", NULL, "DAC1" },
115 { "OUT2", NULL, "DAC2" },
116 { "OUT3", NULL, "DAC3" },
117
118 { "ADC", NULL, "IN0" },
119 { "ADC", NULL, "IN1" },
120};
121
122static unsigned int adau1701_register_size(struct snd_soc_codec *codec,
123 unsigned int reg)
124{
125 switch (reg) {
126 case ADAU1701_DSPCTRL:
127 case ADAU1701_SEROCTL:
128 case ADAU1701_AUXNPOW:
129 case ADAU1701_OSCIPOW:
130 case ADAU1701_DACSET:
131 return 2;
132 case ADAU1701_SERICTL:
133 return 1;
134 }
135
136 dev_err(codec->dev, "Unsupported register address: %d\n", reg);
137 return 0;
138}
139
140static int adau1701_write(struct snd_soc_codec *codec, unsigned int reg,
141 unsigned int value)
142{
143 unsigned int i;
144 unsigned int size;
145 uint8_t buf[4];
146 int ret;
147
148 size = adau1701_register_size(codec, reg);
149 if (size == 0)
150 return -EINVAL;
151
152 snd_soc_cache_write(codec, reg, value);
153
154 buf[0] = 0x08;
155 buf[1] = reg;
156
157 for (i = size + 1; i >= 2; --i) {
158 buf[i] = value;
159 value >>= 8;
160 }
161
162 ret = i2c_master_send(to_i2c_client(codec->dev), buf, size + 2);
163 if (ret == size + 2)
164 return 0;
165 else if (ret < 0)
166 return ret;
167 else
168 return -EIO;
169}
170
171static unsigned int adau1701_read(struct snd_soc_codec *codec, unsigned int reg)
172{
173 unsigned int value;
174 unsigned int ret;
175
176 ret = snd_soc_cache_read(codec, reg, &value);
177 if (ret)
178 return ret;
179
180 return value;
181}
182
183static int adau1701_load_firmware(struct snd_soc_codec *codec)
184{
185 return process_sigma_firmware(codec->control_data, ADAU1701_FIRMWARE);
186}
187
188static int adau1701_set_capture_pcm_format(struct snd_soc_codec *codec,
189 snd_pcm_format_t format)
190{
191 struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
192 unsigned int mask = ADAU1701_SEROCTL_WORD_LEN_MASK;
193 unsigned int val;
194
195 switch (format) {
196 case SNDRV_PCM_FORMAT_S16_LE:
197 val = ADAU1701_SEROCTL_WORD_LEN_16;
198 break;
199 case SNDRV_PCM_FORMAT_S20_3LE:
200 val = ADAU1701_SEROCTL_WORD_LEN_20;
201 break;
202 case SNDRV_PCM_FORMAT_S24_LE:
203 val = ADAU1701_SEROCTL_WORD_LEN_24;
204 break;
205 default:
206 return -EINVAL;
207 }
208
209 if (adau1701->dai_fmt == SND_SOC_DAIFMT_RIGHT_J) {
210 switch (format) {
211 case SNDRV_PCM_FORMAT_S16_LE:
212 val |= ADAU1701_SEROCTL_MSB_DEALY16;
213 break;
214 case SNDRV_PCM_FORMAT_S20_3LE:
215 val |= ADAU1701_SEROCTL_MSB_DEALY12;
216 break;
217 case SNDRV_PCM_FORMAT_S24_LE:
218 val |= ADAU1701_SEROCTL_MSB_DEALY8;
219 break;
220 }
221 mask |= ADAU1701_SEROCTL_MSB_DEALY_MASK;
222 }
223
224 snd_soc_update_bits(codec, ADAU1701_SEROCTL, mask, val);
225
226 return 0;
227}
228
229static int adau1701_set_playback_pcm_format(struct snd_soc_codec *codec,
230 snd_pcm_format_t format)
231{
232 struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
233 unsigned int val;
234
235 if (adau1701->dai_fmt != SND_SOC_DAIFMT_RIGHT_J)
236 return 0;
237
238 switch (format) {
239 case SNDRV_PCM_FORMAT_S16_LE:
240 val = ADAU1701_SERICTL_RIGHTJ_16;
241 break;
242 case SNDRV_PCM_FORMAT_S20_3LE:
243 val = ADAU1701_SERICTL_RIGHTJ_20;
244 break;
245 case SNDRV_PCM_FORMAT_S24_LE:
246 val = ADAU1701_SERICTL_RIGHTJ_24;
247 break;
248 default:
249 return -EINVAL;
250 }
251
252 snd_soc_update_bits(codec, ADAU1701_SERICTL,
253 ADAU1701_SERICTL_MODE_MASK, val);
254
255 return 0;
256}
257
258static int adau1701_hw_params(struct snd_pcm_substream *substream,
259 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
260{
261 struct snd_soc_pcm_runtime *rtd = substream->private_data;
262 struct snd_soc_codec *codec = rtd->codec;
263 snd_pcm_format_t format;
264 unsigned int val;
265
266 switch (params_rate(params)) {
267 case 192000:
268 val = ADAU1701_DSPCTRL_SR_192;
269 break;
270 case 96000:
271 val = ADAU1701_DSPCTRL_SR_96;
272 break;
273 case 48000:
274 val = ADAU1701_DSPCTRL_SR_48;
275 break;
276 default:
277 return -EINVAL;
278 }
279
280 snd_soc_update_bits(codec, ADAU1701_DSPCTRL,
281 ADAU1701_DSPCTRL_SR_MASK, val);
282
283 format = params_format(params);
284 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
285 return adau1701_set_playback_pcm_format(codec, format);
286 else
287 return adau1701_set_capture_pcm_format(codec, format);
288}
289
290static int adau1701_set_dai_fmt(struct snd_soc_dai *codec_dai,
291 unsigned int fmt)
292{
293 struct snd_soc_codec *codec = codec_dai->codec;
294 struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
295 unsigned int serictl = 0x00, seroctl = 0x00;
296 bool invert_lrclk;
297
298 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
299 case SND_SOC_DAIFMT_CBM_CFM:
300
301 seroctl |= ADAU1701_SEROCTL_MASTER | ADAU1701_SEROCTL_OBF16
302 | ADAU1701_SEROCTL_OLF1024;
303 break;
304 case SND_SOC_DAIFMT_CBS_CFS:
305 break;
306 default:
307 return -EINVAL;
308 }
309
310
311 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
312 case SND_SOC_DAIFMT_NB_NF:
313 invert_lrclk = false;
314 break;
315 case SND_SOC_DAIFMT_NB_IF:
316 invert_lrclk = true;
317 break;
318 case SND_SOC_DAIFMT_IB_NF:
319 invert_lrclk = false;
320 serictl |= ADAU1701_SERICTL_INV_BCLK;
321 seroctl |= ADAU1701_SEROCTL_INV_BCLK;
322 break;
323 case SND_SOC_DAIFMT_IB_IF:
324 invert_lrclk = true;
325 serictl |= ADAU1701_SERICTL_INV_BCLK;
326 seroctl |= ADAU1701_SEROCTL_INV_BCLK;
327 break;
328 default:
329 return -EINVAL;
330 }
331
332 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
333 case SND_SOC_DAIFMT_I2S:
334 break;
335 case SND_SOC_DAIFMT_LEFT_J:
336 serictl |= ADAU1701_SERICTL_LEFTJ;
337 seroctl |= ADAU1701_SEROCTL_MSB_DEALY0;
338 invert_lrclk = !invert_lrclk;
339 break;
340 case SND_SOC_DAIFMT_RIGHT_J:
341 serictl |= ADAU1701_SERICTL_RIGHTJ_24;
342 seroctl |= ADAU1701_SEROCTL_MSB_DEALY8;
343 invert_lrclk = !invert_lrclk;
344 break;
345 default:
346 return -EINVAL;
347 }
348
349 if (invert_lrclk) {
350 seroctl |= ADAU1701_SEROCTL_INV_LRCLK;
351 serictl |= ADAU1701_SERICTL_INV_LRCLK;
352 }
353
354 adau1701->dai_fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
355
356 snd_soc_write(codec, ADAU1701_SERICTL, serictl);
357 snd_soc_update_bits(codec, ADAU1701_SEROCTL,
358 ~ADAU1701_SEROCTL_WORD_LEN_MASK, seroctl);
359
360 return 0;
361}
362
363static int adau1701_set_bias_level(struct snd_soc_codec *codec,
364 enum snd_soc_bias_level level)
365{
366 unsigned int mask = ADAU1701_AUXNPOW_VBPD | ADAU1701_AUXNPOW_VRPD;
367
368 switch (level) {
369 case SND_SOC_BIAS_ON:
370 break;
371 case SND_SOC_BIAS_PREPARE:
372 break;
373 case SND_SOC_BIAS_STANDBY:
374
375 snd_soc_update_bits(codec, ADAU1701_AUXNPOW, mask, 0x00);
376 break;
377 case SND_SOC_BIAS_OFF:
378
379 snd_soc_update_bits(codec, ADAU1701_AUXNPOW, mask, mask);
380 break;
381 }
382
383 codec->dapm.bias_level = level;
384 return 0;
385}
386
387static int adau1701_digital_mute(struct snd_soc_dai *dai, int mute)
388{
389 struct snd_soc_codec *codec = dai->codec;
390 unsigned int mask = ADAU1701_DSPCTRL_DAM;
391 unsigned int val;
392
393 if (mute)
394 val = 0;
395 else
396 val = mask;
397
398 snd_soc_update_bits(codec, ADAU1701_DSPCTRL, mask, val);
399
400 return 0;
401}
402
403static int adau1701_set_sysclk(struct snd_soc_codec *codec, int clk_id,
404 int source, unsigned int freq, int dir)
405{
406 unsigned int val;
407
408 switch (clk_id) {
409 case ADAU1701_CLK_SRC_OSC:
410 val = 0x0;
411 break;
412 case ADAU1701_CLK_SRC_MCLK:
413 val = ADAU1701_OSCIPOW_OPD;
414 break;
415 default:
416 return -EINVAL;
417 }
418
419 snd_soc_update_bits(codec, ADAU1701_OSCIPOW, ADAU1701_OSCIPOW_OPD, val);
420
421 return 0;
422}
423
424#define ADAU1701_RATES (SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | \
425 SNDRV_PCM_RATE_192000)
426
427#define ADAU1701_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
428 SNDRV_PCM_FMTBIT_S24_LE)
429
430static const struct snd_soc_dai_ops adau1701_dai_ops = {
431 .set_fmt = adau1701_set_dai_fmt,
432 .hw_params = adau1701_hw_params,
433 .digital_mute = adau1701_digital_mute,
434};
435
436static struct snd_soc_dai_driver adau1701_dai = {
437 .name = "adau1701",
438 .playback = {
439 .stream_name = "Playback",
440 .channels_min = 2,
441 .channels_max = 8,
442 .rates = ADAU1701_RATES,
443 .formats = ADAU1701_FORMATS,
444 },
445 .capture = {
446 .stream_name = "Capture",
447 .channels_min = 2,
448 .channels_max = 8,
449 .rates = ADAU1701_RATES,
450 .formats = ADAU1701_FORMATS,
451 },
452 .ops = &adau1701_dai_ops,
453 .symmetric_rates = 1,
454};
455
456static int adau1701_probe(struct snd_soc_codec *codec)
457{
458 int ret;
459
460 codec->dapm.idle_bias_off = 1;
461 codec->control_data = to_i2c_client(codec->dev);
462
463 ret = adau1701_load_firmware(codec);
464 if (ret)
465 dev_warn(codec->dev, "Failed to load firmware\n");
466
467 snd_soc_write(codec, ADAU1701_DACSET, ADAU1701_DACSET_DACINIT);
468 snd_soc_write(codec, ADAU1701_DSPCTRL, ADAU1701_DSPCTRL_CR);
469
470 return 0;
471}
472
473static struct snd_soc_codec_driver adau1701_codec_drv = {
474 .probe = adau1701_probe,
475 .set_bias_level = adau1701_set_bias_level,
476
477 .reg_cache_size = ADAU1701_NUM_REGS,
478 .reg_word_size = sizeof(u16),
479
480 .controls = adau1701_controls,
481 .num_controls = ARRAY_SIZE(adau1701_controls),
482 .dapm_widgets = adau1701_dapm_widgets,
483 .num_dapm_widgets = ARRAY_SIZE(adau1701_dapm_widgets),
484 .dapm_routes = adau1701_dapm_routes,
485 .num_dapm_routes = ARRAY_SIZE(adau1701_dapm_routes),
486
487 .write = adau1701_write,
488 .read = adau1701_read,
489
490 .set_sysclk = adau1701_set_sysclk,
491};
492
493static __devinit int adau1701_i2c_probe(struct i2c_client *client,
494 const struct i2c_device_id *id)
495{
496 struct adau1701 *adau1701;
497 int ret;
498
499 adau1701 = kzalloc(sizeof(*adau1701), GFP_KERNEL);
500 if (!adau1701)
501 return -ENOMEM;
502
503 i2c_set_clientdata(client, adau1701);
504 ret = snd_soc_register_codec(&client->dev, &adau1701_codec_drv,
505 &adau1701_dai, 1);
506 if (ret < 0)
507 kfree(adau1701);
508
509 return ret;
510}
511
512static __devexit int adau1701_i2c_remove(struct i2c_client *client)
513{
514 snd_soc_unregister_codec(&client->dev);
515 kfree(i2c_get_clientdata(client));
516 return 0;
517}
518
519static const struct i2c_device_id adau1701_i2c_id[] = {
520 { "adau1701", 0 },
521 { }
522};
523MODULE_DEVICE_TABLE(i2c, adau1701_i2c_id);
524
525static struct i2c_driver adau1701_i2c_driver = {
526 .driver = {
527 .name = "adau1701",
528 .owner = THIS_MODULE,
529 },
530 .probe = adau1701_i2c_probe,
531 .remove = __devexit_p(adau1701_i2c_remove),
532 .id_table = adau1701_i2c_id,
533};
534
535static int __init adau1701_init(void)
536{
537 return i2c_add_driver(&adau1701_i2c_driver);
538}
539module_init(adau1701_init);
540
541static void __exit adau1701_exit(void)
542{
543 i2c_del_driver(&adau1701_i2c_driver);
544}
545module_exit(adau1701_exit);
546
547MODULE_DESCRIPTION("ASoC ADAU1701 SigmaDSP driver");
548MODULE_AUTHOR("Cliff Cai <cliff.cai@analog.com>");
549MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
550MODULE_LICENSE("GPL");
551
