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17#include <linux/clk.h>
18#include <linux/i2c.h>
19#include <linux/slab.h>
20#include <linux/of_device.h>
21#include <linux/module.h>
22#include <linux/regmap.h>
23#include <sound/soc.h>
24#include <sound/pcm_params.h>
25#include <sound/tlv.h>
26
27#define PW_MGMT1 0x00
28#define PW_MGMT2 0x01
29#define PW_MGMT3 0x02
30#define CTRL1 0x03
31#define CTRL2 0x04
32#define DEMP1 0x05
33#define DEMP2 0x06
34#define OFD 0x07
35#define ZRD 0x08
36#define ICTRL 0x09
37#define OCTRL 0x0a
38#define LOUT1 0x0b
39#define ROUT1 0x0c
40#define LOUT2 0x0d
41#define ROUT2 0x0e
42#define LOUT3 0x0f
43#define ROUT3 0x10
44#define LOUT4 0x11
45#define ROUT4 0x12
46#define LOUT5 0x13
47#define ROUT5 0x14
48#define LOUT6 0x15
49#define ROUT6 0x16
50
51
52#define RSTN BIT(0)
53#define PMDAC BIT(1)
54#define PMADC BIT(2)
55#define PMVR BIT(3)
56
57
58#define PMAD_ALL 0x7
59
60
61#define PMDA_ALL 0x3f
62
63
64#define DIF0 BIT(3)
65#define DIF1 BIT(4)
66#define DIF2 BIT(5)
67#define TDM0 BIT(6)
68#define TDM1 BIT(7)
69#define NO_FMT (0xff)
70#define FMT_MASK (0xf8)
71
72
73#define DFS_MASK (3 << 2)
74#define DFS_NORMAL_SPEED (0 << 2)
75#define DFS_DOUBLE_SPEED (1 << 2)
76#define DFS_QUAD_SPEED (2 << 2)
77
78
79#define ICTRL_MASK (0x3)
80
81
82#define OCTRL_MASK (0x3F)
83
84struct ak4613_formats {
85 unsigned int width;
86 unsigned int fmt;
87};
88
89struct ak4613_interface {
90 struct ak4613_formats capture;
91 struct ak4613_formats playback;
92};
93
94struct ak4613_priv {
95 struct mutex lock;
96 const struct ak4613_interface *iface;
97 struct snd_pcm_hw_constraint_list constraint;
98 unsigned int sysclk;
99
100 unsigned int fmt;
101 u8 oc;
102 u8 ic;
103 int cnt;
104};
105
106
107
108
109
110
111
112
113
114static const DECLARE_TLV_DB_SCALE(out_tlv, -12750, 50, 1);
115
116static const struct snd_kcontrol_new ak4613_snd_controls[] = {
117 SOC_DOUBLE_R_TLV("Digital Playback Volume1", LOUT1, ROUT1,
118 0, 0xFF, 1, out_tlv),
119 SOC_DOUBLE_R_TLV("Digital Playback Volume2", LOUT2, ROUT2,
120 0, 0xFF, 1, out_tlv),
121 SOC_DOUBLE_R_TLV("Digital Playback Volume3", LOUT3, ROUT3,
122 0, 0xFF, 1, out_tlv),
123 SOC_DOUBLE_R_TLV("Digital Playback Volume4", LOUT4, ROUT4,
124 0, 0xFF, 1, out_tlv),
125 SOC_DOUBLE_R_TLV("Digital Playback Volume5", LOUT5, ROUT5,
126 0, 0xFF, 1, out_tlv),
127 SOC_DOUBLE_R_TLV("Digital Playback Volume6", LOUT6, ROUT6,
128 0, 0xFF, 1, out_tlv),
129};
130
131static const struct reg_default ak4613_reg[] = {
132 { 0x0, 0x0f }, { 0x1, 0x07 }, { 0x2, 0x3f }, { 0x3, 0x20 },
133 { 0x4, 0x20 }, { 0x5, 0x55 }, { 0x6, 0x05 }, { 0x7, 0x07 },
134 { 0x8, 0x0f }, { 0x9, 0x07 }, { 0xa, 0x3f }, { 0xb, 0x00 },
135 { 0xc, 0x00 }, { 0xd, 0x00 }, { 0xe, 0x00 }, { 0xf, 0x00 },
136 { 0x10, 0x00 }, { 0x11, 0x00 }, { 0x12, 0x00 }, { 0x13, 0x00 },
137 { 0x14, 0x00 }, { 0x15, 0x00 }, { 0x16, 0x00 },
138};
139
140#define AUDIO_IFACE_TO_VAL(fmts) ((fmts - ak4613_iface) << 3)
141#define AUDIO_IFACE(b, fmt) { b, SND_SOC_DAIFMT_##fmt }
142static const struct ak4613_interface ak4613_iface[] = {
143
144
145 [3] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(24, LEFT_J) },
146 [4] = { AUDIO_IFACE(24, I2S), AUDIO_IFACE(24, I2S) },
147};
148
149static const struct regmap_config ak4613_regmap_cfg = {
150 .reg_bits = 8,
151 .val_bits = 8,
152 .max_register = 0x16,
153 .reg_defaults = ak4613_reg,
154 .num_reg_defaults = ARRAY_SIZE(ak4613_reg),
155 .cache_type = REGCACHE_RBTREE,
156};
157
158static const struct of_device_id ak4613_of_match[] = {
159 { .compatible = "asahi-kasei,ak4613", .data = &ak4613_regmap_cfg },
160 {},
161};
162MODULE_DEVICE_TABLE(of, ak4613_of_match);
163
164static const struct i2c_device_id ak4613_i2c_id[] = {
165 { "ak4613", (kernel_ulong_t)&ak4613_regmap_cfg },
166 { }
167};
168MODULE_DEVICE_TABLE(i2c, ak4613_i2c_id);
169
170static const struct snd_soc_dapm_widget ak4613_dapm_widgets[] = {
171
172
173 SND_SOC_DAPM_OUTPUT("LOUT1"),
174 SND_SOC_DAPM_OUTPUT("LOUT2"),
175 SND_SOC_DAPM_OUTPUT("LOUT3"),
176 SND_SOC_DAPM_OUTPUT("LOUT4"),
177 SND_SOC_DAPM_OUTPUT("LOUT5"),
178 SND_SOC_DAPM_OUTPUT("LOUT6"),
179
180 SND_SOC_DAPM_OUTPUT("ROUT1"),
181 SND_SOC_DAPM_OUTPUT("ROUT2"),
182 SND_SOC_DAPM_OUTPUT("ROUT3"),
183 SND_SOC_DAPM_OUTPUT("ROUT4"),
184 SND_SOC_DAPM_OUTPUT("ROUT5"),
185 SND_SOC_DAPM_OUTPUT("ROUT6"),
186
187
188 SND_SOC_DAPM_INPUT("LIN1"),
189 SND_SOC_DAPM_INPUT("LIN2"),
190
191 SND_SOC_DAPM_INPUT("RIN1"),
192 SND_SOC_DAPM_INPUT("RIN2"),
193
194
195 SND_SOC_DAPM_DAC("DAC1", NULL, PW_MGMT3, 0, 0),
196 SND_SOC_DAPM_DAC("DAC2", NULL, PW_MGMT3, 1, 0),
197 SND_SOC_DAPM_DAC("DAC3", NULL, PW_MGMT3, 2, 0),
198 SND_SOC_DAPM_DAC("DAC4", NULL, PW_MGMT3, 3, 0),
199 SND_SOC_DAPM_DAC("DAC5", NULL, PW_MGMT3, 4, 0),
200 SND_SOC_DAPM_DAC("DAC6", NULL, PW_MGMT3, 5, 0),
201
202
203 SND_SOC_DAPM_ADC("ADC1", NULL, PW_MGMT2, 0, 0),
204 SND_SOC_DAPM_ADC("ADC2", NULL, PW_MGMT2, 1, 0),
205};
206
207static const struct snd_soc_dapm_route ak4613_intercon[] = {
208 {"LOUT1", NULL, "DAC1"},
209 {"LOUT2", NULL, "DAC2"},
210 {"LOUT3", NULL, "DAC3"},
211 {"LOUT4", NULL, "DAC4"},
212 {"LOUT5", NULL, "DAC5"},
213 {"LOUT6", NULL, "DAC6"},
214
215 {"ROUT1", NULL, "DAC1"},
216 {"ROUT2", NULL, "DAC2"},
217 {"ROUT3", NULL, "DAC3"},
218 {"ROUT4", NULL, "DAC4"},
219 {"ROUT5", NULL, "DAC5"},
220 {"ROUT6", NULL, "DAC6"},
221
222 {"DAC1", NULL, "Playback"},
223 {"DAC2", NULL, "Playback"},
224 {"DAC3", NULL, "Playback"},
225 {"DAC4", NULL, "Playback"},
226 {"DAC5", NULL, "Playback"},
227 {"DAC6", NULL, "Playback"},
228
229 {"Capture", NULL, "ADC1"},
230 {"Capture", NULL, "ADC2"},
231
232 {"ADC1", NULL, "LIN1"},
233 {"ADC2", NULL, "LIN2"},
234
235 {"ADC1", NULL, "RIN1"},
236 {"ADC2", NULL, "RIN2"},
237};
238
239static void ak4613_dai_shutdown(struct snd_pcm_substream *substream,
240 struct snd_soc_dai *dai)
241{
242 struct snd_soc_codec *codec = dai->codec;
243 struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
244 struct device *dev = codec->dev;
245
246 mutex_lock(&priv->lock);
247 priv->cnt--;
248 if (priv->cnt < 0) {
249 dev_err(dev, "unexpected counter error\n");
250 priv->cnt = 0;
251 }
252 if (!priv->cnt)
253 priv->iface = NULL;
254 mutex_unlock(&priv->lock);
255}
256
257static void ak4613_hw_constraints(struct ak4613_priv *priv,
258 struct snd_pcm_runtime *runtime)
259{
260 static const unsigned int ak4613_rates[] = {
261 32000,
262 44100,
263 48000,
264 64000,
265 88200,
266 96000,
267 176400,
268 192000,
269 };
270 struct snd_pcm_hw_constraint_list *constraint = &priv->constraint;
271 unsigned int fs;
272 int i;
273
274 constraint->list = ak4613_rates;
275 constraint->mask = 0;
276 constraint->count = 0;
277
278
279
280
281
282
283
284
285
286
287
288
289 for (i = 0; i < ARRAY_SIZE(ak4613_rates); i++) {
290
291 fs = (ak4613_rates[i] <= 96000) ? 256 : 128;
292
293 if (priv->sysclk >= ak4613_rates[i] * fs)
294 constraint->count = i + 1;
295 }
296
297 snd_pcm_hw_constraint_list(runtime, 0,
298 SNDRV_PCM_HW_PARAM_RATE, constraint);
299}
300
301static int ak4613_dai_startup(struct snd_pcm_substream *substream,
302 struct snd_soc_dai *dai)
303{
304 struct snd_soc_codec *codec = dai->codec;
305 struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
306
307 priv->cnt++;
308
309 ak4613_hw_constraints(priv, substream->runtime);
310
311 return 0;
312}
313
314static int ak4613_dai_set_sysclk(struct snd_soc_dai *codec_dai,
315 int clk_id, unsigned int freq, int dir)
316{
317 struct snd_soc_codec *codec = codec_dai->codec;
318 struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
319
320 priv->sysclk = freq;
321
322 return 0;
323}
324
325static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
326{
327 struct snd_soc_codec *codec = dai->codec;
328 struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
329
330 fmt &= SND_SOC_DAIFMT_FORMAT_MASK;
331
332 switch (fmt) {
333 case SND_SOC_DAIFMT_LEFT_J:
334 case SND_SOC_DAIFMT_I2S:
335 priv->fmt = fmt;
336 break;
337 default:
338 return -EINVAL;
339 }
340
341 return 0;
342}
343
344static bool ak4613_dai_fmt_matching(const struct ak4613_interface *iface,
345 int is_play,
346 unsigned int fmt, unsigned int width)
347{
348 const struct ak4613_formats *fmts;
349
350 fmts = (is_play) ? &iface->playback : &iface->capture;
351
352 if (fmts->fmt != fmt)
353 return false;
354
355 if (fmts->width != width)
356 return false;
357
358 return true;
359}
360
361static int ak4613_dai_hw_params(struct snd_pcm_substream *substream,
362 struct snd_pcm_hw_params *params,
363 struct snd_soc_dai *dai)
364{
365 struct snd_soc_codec *codec = dai->codec;
366 struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
367 const struct ak4613_interface *iface;
368 struct device *dev = codec->dev;
369 unsigned int width = params_width(params);
370 unsigned int fmt = priv->fmt;
371 unsigned int rate;
372 int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
373 int i, ret;
374 u8 fmt_ctrl, ctrl2;
375
376 rate = params_rate(params);
377 switch (rate) {
378 case 32000:
379 case 44100:
380 case 48000:
381 ctrl2 = DFS_NORMAL_SPEED;
382 break;
383 case 64000:
384 case 88200:
385 case 96000:
386 ctrl2 = DFS_DOUBLE_SPEED;
387 break;
388 case 176400:
389 case 192000:
390 ctrl2 = DFS_QUAD_SPEED;
391 break;
392 default:
393 return -EINVAL;
394 }
395
396
397
398
399
400
401 fmt_ctrl = NO_FMT;
402 ret = -EINVAL;
403 iface = NULL;
404
405 mutex_lock(&priv->lock);
406 if (priv->iface) {
407 if (ak4613_dai_fmt_matching(priv->iface, is_play, fmt, width))
408 iface = priv->iface;
409 } else {
410 for (i = ARRAY_SIZE(ak4613_iface) - 1; i >= 0; i--) {
411 if (!ak4613_dai_fmt_matching(ak4613_iface + i,
412 is_play,
413 fmt, width))
414 continue;
415 iface = ak4613_iface + i;
416 break;
417 }
418 }
419
420 if ((priv->iface == NULL) ||
421 (priv->iface == iface)) {
422 priv->iface = iface;
423 ret = 0;
424 }
425 mutex_unlock(&priv->lock);
426
427 if (ret < 0)
428 goto hw_params_end;
429
430 fmt_ctrl = AUDIO_IFACE_TO_VAL(iface);
431
432 snd_soc_update_bits(codec, CTRL1, FMT_MASK, fmt_ctrl);
433 snd_soc_update_bits(codec, CTRL2, DFS_MASK, ctrl2);
434
435 snd_soc_update_bits(codec, ICTRL, ICTRL_MASK, priv->ic);
436 snd_soc_update_bits(codec, OCTRL, OCTRL_MASK, priv->oc);
437
438hw_params_end:
439 if (ret < 0)
440 dev_warn(dev, "unsupported data width/format combination\n");
441
442 return ret;
443}
444
445static int ak4613_set_bias_level(struct snd_soc_codec *codec,
446 enum snd_soc_bias_level level)
447{
448 u8 mgmt1 = 0;
449
450 switch (level) {
451 case SND_SOC_BIAS_ON:
452 mgmt1 |= RSTN;
453
454 case SND_SOC_BIAS_PREPARE:
455 mgmt1 |= PMADC | PMDAC;
456
457 case SND_SOC_BIAS_STANDBY:
458 mgmt1 |= PMVR;
459
460 case SND_SOC_BIAS_OFF:
461 default:
462 break;
463 }
464
465 snd_soc_write(codec, PW_MGMT1, mgmt1);
466
467 return 0;
468}
469
470static const struct snd_soc_dai_ops ak4613_dai_ops = {
471 .startup = ak4613_dai_startup,
472 .shutdown = ak4613_dai_shutdown,
473 .set_sysclk = ak4613_dai_set_sysclk,
474 .set_fmt = ak4613_dai_set_fmt,
475 .hw_params = ak4613_dai_hw_params,
476};
477
478#define AK4613_PCM_RATE (SNDRV_PCM_RATE_32000 |\
479 SNDRV_PCM_RATE_44100 |\
480 SNDRV_PCM_RATE_48000 |\
481 SNDRV_PCM_RATE_64000 |\
482 SNDRV_PCM_RATE_88200 |\
483 SNDRV_PCM_RATE_96000 |\
484 SNDRV_PCM_RATE_176400 |\
485 SNDRV_PCM_RATE_192000)
486#define AK4613_PCM_FMTBIT (SNDRV_PCM_FMTBIT_S24_LE)
487
488static struct snd_soc_dai_driver ak4613_dai = {
489 .name = "ak4613-hifi",
490 .playback = {
491 .stream_name = "Playback",
492 .channels_min = 2,
493 .channels_max = 2,
494 .rates = AK4613_PCM_RATE,
495 .formats = AK4613_PCM_FMTBIT,
496 },
497 .capture = {
498 .stream_name = "Capture",
499 .channels_min = 2,
500 .channels_max = 2,
501 .rates = AK4613_PCM_RATE,
502 .formats = AK4613_PCM_FMTBIT,
503 },
504 .ops = &ak4613_dai_ops,
505 .symmetric_rates = 1,
506};
507
508static int ak4613_suspend(struct snd_soc_codec *codec)
509{
510 struct regmap *regmap = dev_get_regmap(codec->dev, NULL);
511
512 regcache_cache_only(regmap, true);
513 regcache_mark_dirty(regmap);
514 return 0;
515}
516
517static int ak4613_resume(struct snd_soc_codec *codec)
518{
519 struct regmap *regmap = dev_get_regmap(codec->dev, NULL);
520
521 regcache_cache_only(regmap, false);
522 return regcache_sync(regmap);
523}
524
525static struct snd_soc_codec_driver soc_codec_dev_ak4613 = {
526 .suspend = ak4613_suspend,
527 .resume = ak4613_resume,
528 .set_bias_level = ak4613_set_bias_level,
529 .component_driver = {
530 .controls = ak4613_snd_controls,
531 .num_controls = ARRAY_SIZE(ak4613_snd_controls),
532 .dapm_widgets = ak4613_dapm_widgets,
533 .num_dapm_widgets = ARRAY_SIZE(ak4613_dapm_widgets),
534 .dapm_routes = ak4613_intercon,
535 .num_dapm_routes = ARRAY_SIZE(ak4613_intercon),
536 },
537};
538
539static void ak4613_parse_of(struct ak4613_priv *priv,
540 struct device *dev)
541{
542 struct device_node *np = dev->of_node;
543 char prop[32];
544 int i;
545
546
547 for (i = 0; i < 2; i++) {
548 snprintf(prop, sizeof(prop), "asahi-kasei,in%d-single-end", i + 1);
549 if (!of_get_property(np, prop, NULL))
550 priv->ic |= 1 << i;
551 }
552
553
554 for (i = 0; i < 6; i++) {
555 snprintf(prop, sizeof(prop), "asahi-kasei,out%d-single-end", i + 1);
556 if (!of_get_property(np, prop, NULL))
557 priv->oc |= 1 << i;
558 }
559}
560
561static int ak4613_i2c_probe(struct i2c_client *i2c,
562 const struct i2c_device_id *id)
563{
564 struct device *dev = &i2c->dev;
565 struct device_node *np = dev->of_node;
566 const struct regmap_config *regmap_cfg;
567 struct regmap *regmap;
568 struct ak4613_priv *priv;
569
570 regmap_cfg = NULL;
571 if (np) {
572 const struct of_device_id *of_id;
573
574 of_id = of_match_device(ak4613_of_match, dev);
575 if (of_id)
576 regmap_cfg = of_id->data;
577 } else {
578 regmap_cfg = (const struct regmap_config *)id->driver_data;
579 }
580
581 if (!regmap_cfg)
582 return -EINVAL;
583
584 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
585 if (!priv)
586 return -ENOMEM;
587
588 ak4613_parse_of(priv, dev);
589
590 priv->iface = NULL;
591 priv->cnt = 0;
592 priv->sysclk = 0;
593
594 mutex_init(&priv->lock);
595
596 i2c_set_clientdata(i2c, priv);
597
598 regmap = devm_regmap_init_i2c(i2c, regmap_cfg);
599 if (IS_ERR(regmap))
600 return PTR_ERR(regmap);
601
602 return snd_soc_register_codec(dev, &soc_codec_dev_ak4613,
603 &ak4613_dai, 1);
604}
605
606static int ak4613_i2c_remove(struct i2c_client *client)
607{
608 snd_soc_unregister_codec(&client->dev);
609 return 0;
610}
611
612static struct i2c_driver ak4613_i2c_driver = {
613 .driver = {
614 .name = "ak4613-codec",
615 .of_match_table = ak4613_of_match,
616 },
617 .probe = ak4613_i2c_probe,
618 .remove = ak4613_i2c_remove,
619 .id_table = ak4613_i2c_id,
620};
621
622module_i2c_driver(ak4613_i2c_driver);
623
624MODULE_DESCRIPTION("Soc AK4613 driver");
625MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
626MODULE_LICENSE("GPL v2");
627
