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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
98 unsigned int fmt;
99 u8 oc;
100 u8 ic;
101 int cnt;
102};
103
104
105
106
107
108
109
110
111
112static const DECLARE_TLV_DB_SCALE(out_tlv, -12750, 50, 1);
113
114static const struct snd_kcontrol_new ak4613_snd_controls[] = {
115 SOC_DOUBLE_R_TLV("Digital Playback Volume1", LOUT1, ROUT1,
116 0, 0xFF, 1, out_tlv),
117 SOC_DOUBLE_R_TLV("Digital Playback Volume2", LOUT2, ROUT2,
118 0, 0xFF, 1, out_tlv),
119 SOC_DOUBLE_R_TLV("Digital Playback Volume3", LOUT3, ROUT3,
120 0, 0xFF, 1, out_tlv),
121 SOC_DOUBLE_R_TLV("Digital Playback Volume4", LOUT4, ROUT4,
122 0, 0xFF, 1, out_tlv),
123 SOC_DOUBLE_R_TLV("Digital Playback Volume5", LOUT5, ROUT5,
124 0, 0xFF, 1, out_tlv),
125 SOC_DOUBLE_R_TLV("Digital Playback Volume6", LOUT6, ROUT6,
126 0, 0xFF, 1, out_tlv),
127};
128
129static const struct reg_default ak4613_reg[] = {
130 { 0x0, 0x0f }, { 0x1, 0x07 }, { 0x2, 0x3f }, { 0x3, 0x20 },
131 { 0x4, 0x20 }, { 0x5, 0x55 }, { 0x6, 0x05 }, { 0x7, 0x07 },
132 { 0x8, 0x0f }, { 0x9, 0x07 }, { 0xa, 0x3f }, { 0xb, 0x00 },
133 { 0xc, 0x00 }, { 0xd, 0x00 }, { 0xe, 0x00 }, { 0xf, 0x00 },
134 { 0x10, 0x00 }, { 0x11, 0x00 }, { 0x12, 0x00 }, { 0x13, 0x00 },
135 { 0x14, 0x00 }, { 0x15, 0x00 }, { 0x16, 0x00 },
136};
137
138#define AUDIO_IFACE_TO_VAL(fmts) ((fmts - ak4613_iface) << 3)
139#define AUDIO_IFACE(b, fmt) { b, SND_SOC_DAIFMT_##fmt }
140static const struct ak4613_interface ak4613_iface[] = {
141
142 [0] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(16, RIGHT_J) },
143 [1] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(20, RIGHT_J) },
144 [2] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(24, RIGHT_J) },
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 int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
258{
259 struct snd_soc_codec *codec = dai->codec;
260 struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
261
262 fmt &= SND_SOC_DAIFMT_FORMAT_MASK;
263
264 switch (fmt) {
265 case SND_SOC_DAIFMT_RIGHT_J:
266 case SND_SOC_DAIFMT_LEFT_J:
267 case SND_SOC_DAIFMT_I2S:
268 priv->fmt = fmt;
269
270 break;
271 default:
272 return -EINVAL;
273 }
274
275 return 0;
276}
277
278static bool ak4613_dai_fmt_matching(const struct ak4613_interface *iface,
279 int is_play,
280 unsigned int fmt, unsigned int width)
281{
282 const struct ak4613_formats *fmts;
283
284 fmts = (is_play) ? &iface->playback : &iface->capture;
285
286 if (fmts->fmt != fmt)
287 return false;
288
289 if (fmt == SND_SOC_DAIFMT_RIGHT_J) {
290 if (fmts->width != width)
291 return false;
292 } else {
293 if (fmts->width < width)
294 return false;
295 }
296
297 return true;
298}
299
300static int ak4613_dai_hw_params(struct snd_pcm_substream *substream,
301 struct snd_pcm_hw_params *params,
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 const struct ak4613_interface *iface;
307 struct device *dev = codec->dev;
308 unsigned int width = params_width(params);
309 unsigned int fmt = priv->fmt;
310 unsigned int rate;
311 int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
312 int i, ret;
313 u8 fmt_ctrl, ctrl2;
314
315 rate = params_rate(params);
316 switch (rate) {
317 case 32000:
318 case 44100:
319 case 48000:
320 ctrl2 = DFS_NORMAL_SPEED;
321 break;
322 case 88200:
323 case 96000:
324 ctrl2 = DFS_DOUBLE_SPEED;
325 break;
326 case 176400:
327 case 192000:
328 ctrl2 = DFS_QUAD_SPEED;
329 break;
330 default:
331 return -EINVAL;
332 }
333
334
335
336
337
338
339 fmt_ctrl = NO_FMT;
340 ret = -EINVAL;
341 iface = NULL;
342
343 mutex_lock(&priv->lock);
344 if (priv->iface) {
345 if (ak4613_dai_fmt_matching(priv->iface, is_play, fmt, width))
346 iface = priv->iface;
347 } else {
348 for (i = ARRAY_SIZE(ak4613_iface); i >= 0; i--) {
349 if (!ak4613_dai_fmt_matching(ak4613_iface + i,
350 is_play,
351 fmt, width))
352 continue;
353 iface = ak4613_iface + i;
354 break;
355 }
356 }
357
358 if ((priv->iface == NULL) ||
359 (priv->iface == iface)) {
360 priv->iface = iface;
361 priv->cnt++;
362 ret = 0;
363 }
364 mutex_unlock(&priv->lock);
365
366 if (ret < 0)
367 goto hw_params_end;
368
369 fmt_ctrl = AUDIO_IFACE_TO_VAL(iface);
370
371 snd_soc_update_bits(codec, CTRL1, FMT_MASK, fmt_ctrl);
372 snd_soc_update_bits(codec, CTRL2, DFS_MASK, ctrl2);
373
374 snd_soc_update_bits(codec, ICTRL, ICTRL_MASK, priv->ic);
375 snd_soc_update_bits(codec, OCTRL, OCTRL_MASK, priv->oc);
376
377hw_params_end:
378 if (ret < 0)
379 dev_warn(dev, "unsupported data width/format combination\n");
380
381 return ret;
382}
383
384static int ak4613_set_bias_level(struct snd_soc_codec *codec,
385 enum snd_soc_bias_level level)
386{
387 u8 mgmt1 = 0;
388
389 switch (level) {
390 case SND_SOC_BIAS_ON:
391 mgmt1 |= RSTN;
392
393 case SND_SOC_BIAS_PREPARE:
394 mgmt1 |= PMADC | PMDAC;
395
396 case SND_SOC_BIAS_STANDBY:
397 mgmt1 |= PMVR;
398
399 case SND_SOC_BIAS_OFF:
400 default:
401 break;
402 }
403
404 snd_soc_write(codec, PW_MGMT1, mgmt1);
405
406 return 0;
407}
408
409static const struct snd_soc_dai_ops ak4613_dai_ops = {
410 .shutdown = ak4613_dai_shutdown,
411 .set_fmt = ak4613_dai_set_fmt,
412 .hw_params = ak4613_dai_hw_params,
413};
414
415#define AK4613_PCM_RATE (SNDRV_PCM_RATE_32000 |\
416 SNDRV_PCM_RATE_44100 |\
417 SNDRV_PCM_RATE_48000 |\
418 SNDRV_PCM_RATE_64000 |\
419 SNDRV_PCM_RATE_88200 |\
420 SNDRV_PCM_RATE_96000 |\
421 SNDRV_PCM_RATE_176400 |\
422 SNDRV_PCM_RATE_192000)
423#define AK4613_PCM_FMTBIT (SNDRV_PCM_FMTBIT_S16_LE |\
424 SNDRV_PCM_FMTBIT_S24_LE)
425
426static struct snd_soc_dai_driver ak4613_dai = {
427 .name = "ak4613-hifi",
428 .playback = {
429 .stream_name = "Playback",
430 .channels_min = 2,
431 .channels_max = 2,
432 .rates = AK4613_PCM_RATE,
433 .formats = AK4613_PCM_FMTBIT,
434 },
435 .capture = {
436 .stream_name = "Capture",
437 .channels_min = 2,
438 .channels_max = 2,
439 .rates = AK4613_PCM_RATE,
440 .formats = AK4613_PCM_FMTBIT,
441 },
442 .ops = &ak4613_dai_ops,
443 .symmetric_rates = 1,
444};
445
446static int ak4613_suspend(struct snd_soc_codec *codec)
447{
448 struct regmap *regmap = dev_get_regmap(codec->dev, NULL);
449
450 regcache_cache_only(regmap, true);
451 regcache_mark_dirty(regmap);
452 return 0;
453}
454
455static int ak4613_resume(struct snd_soc_codec *codec)
456{
457 struct regmap *regmap = dev_get_regmap(codec->dev, NULL);
458
459 regcache_cache_only(regmap, false);
460 return regcache_sync(regmap);
461}
462
463static struct snd_soc_codec_driver soc_codec_dev_ak4613 = {
464 .suspend = ak4613_suspend,
465 .resume = ak4613_resume,
466 .set_bias_level = ak4613_set_bias_level,
467 .component_driver = {
468 .controls = ak4613_snd_controls,
469 .num_controls = ARRAY_SIZE(ak4613_snd_controls),
470 .dapm_widgets = ak4613_dapm_widgets,
471 .num_dapm_widgets = ARRAY_SIZE(ak4613_dapm_widgets),
472 .dapm_routes = ak4613_intercon,
473 .num_dapm_routes = ARRAY_SIZE(ak4613_intercon),
474 },
475};
476
477static void ak4613_parse_of(struct ak4613_priv *priv,
478 struct device *dev)
479{
480 struct device_node *np = dev->of_node;
481 char prop[32];
482 int i;
483
484
485 for (i = 0; i < 2; i++) {
486 snprintf(prop, sizeof(prop), "asahi-kasei,in%d-single-end", i + 1);
487 if (!of_get_property(np, prop, NULL))
488 priv->ic |= 1 << i;
489 }
490
491
492 for (i = 0; i < 6; i++) {
493 snprintf(prop, sizeof(prop), "asahi-kasei,out%d-single-end", i + 1);
494 if (!of_get_property(np, prop, NULL))
495 priv->oc |= 1 << i;
496 }
497}
498
499static int ak4613_i2c_probe(struct i2c_client *i2c,
500 const struct i2c_device_id *id)
501{
502 struct device *dev = &i2c->dev;
503 struct device_node *np = dev->of_node;
504 const struct regmap_config *regmap_cfg;
505 struct regmap *regmap;
506 struct ak4613_priv *priv;
507
508 regmap_cfg = NULL;
509 if (np) {
510 const struct of_device_id *of_id;
511
512 of_id = of_match_device(ak4613_of_match, dev);
513 if (of_id)
514 regmap_cfg = of_id->data;
515 } else {
516 regmap_cfg = (const struct regmap_config *)id->driver_data;
517 }
518
519 if (!regmap_cfg)
520 return -EINVAL;
521
522 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
523 if (!priv)
524 return -ENOMEM;
525
526 ak4613_parse_of(priv, dev);
527
528 priv->iface = NULL;
529 priv->cnt = 0;
530
531 mutex_init(&priv->lock);
532
533 i2c_set_clientdata(i2c, priv);
534
535 regmap = devm_regmap_init_i2c(i2c, regmap_cfg);
536 if (IS_ERR(regmap))
537 return PTR_ERR(regmap);
538
539 return snd_soc_register_codec(dev, &soc_codec_dev_ak4613,
540 &ak4613_dai, 1);
541}
542
543static int ak4613_i2c_remove(struct i2c_client *client)
544{
545 snd_soc_unregister_codec(&client->dev);
546 return 0;
547}
548
549static struct i2c_driver ak4613_i2c_driver = {
550 .driver = {
551 .name = "ak4613-codec",
552 .of_match_table = ak4613_of_match,
553 },
554 .probe = ak4613_i2c_probe,
555 .remove = ak4613_i2c_remove,
556 .id_table = ak4613_i2c_id,
557};
558
559module_i2c_driver(ak4613_i2c_driver);
560
561MODULE_DESCRIPTION("Soc AK4613 driver");
562MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
563MODULE_LICENSE("GPL v2");
564
