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17#include <linux/clk.h>
18#include <linux/delay.h>
19#include <linux/i2c.h>
20#include <linux/slab.h>
21#include <linux/of_device.h>
22#include <linux/module.h>
23#include <linux/regmap.h>
24#include <sound/soc.h>
25#include <sound/pcm_params.h>
26#include <sound/tlv.h>
27
28#define PW_MGMT1 0x00
29#define PW_MGMT2 0x01
30#define PW_MGMT3 0x02
31#define CTRL1 0x03
32#define CTRL2 0x04
33#define DEMP1 0x05
34#define DEMP2 0x06
35#define OFD 0x07
36#define ZRD 0x08
37#define ICTRL 0x09
38#define OCTRL 0x0a
39#define LOUT1 0x0b
40#define ROUT1 0x0c
41#define LOUT2 0x0d
42#define ROUT2 0x0e
43#define LOUT3 0x0f
44#define ROUT3 0x10
45#define LOUT4 0x11
46#define ROUT4 0x12
47#define LOUT5 0x13
48#define ROUT5 0x14
49#define LOUT6 0x15
50#define ROUT6 0x16
51
52
53#define RSTN BIT(0)
54#define PMDAC BIT(1)
55#define PMADC BIT(2)
56#define PMVR BIT(3)
57
58
59#define PMAD_ALL 0x7
60
61
62#define PMDA_ALL 0x3f
63
64
65#define DIF0 BIT(3)
66#define DIF1 BIT(4)
67#define DIF2 BIT(5)
68#define TDM0 BIT(6)
69#define TDM1 BIT(7)
70#define NO_FMT (0xff)
71#define FMT_MASK (0xf8)
72
73
74#define DFS_MASK (3 << 2)
75#define DFS_NORMAL_SPEED (0 << 2)
76#define DFS_DOUBLE_SPEED (1 << 2)
77#define DFS_QUAD_SPEED (2 << 2)
78
79
80#define ICTRL_MASK (0x3)
81
82
83#define OCTRL_MASK (0x3F)
84
85struct ak4613_formats {
86 unsigned int width;
87 unsigned int fmt;
88};
89
90struct ak4613_interface {
91 struct ak4613_formats capture;
92 struct ak4613_formats playback;
93};
94
95struct ak4613_priv {
96 struct mutex lock;
97 const struct ak4613_interface *iface;
98 struct snd_pcm_hw_constraint_list constraint;
99 struct work_struct dummy_write_work;
100 struct snd_soc_component *component;
101 unsigned int rate;
102 unsigned int sysclk;
103
104 unsigned int fmt;
105 u8 oc;
106 u8 ic;
107 int cnt;
108};
109
110
111
112
113
114
115
116
117
118static const DECLARE_TLV_DB_SCALE(out_tlv, -12750, 50, 1);
119
120static const struct snd_kcontrol_new ak4613_snd_controls[] = {
121 SOC_DOUBLE_R_TLV("Digital Playback Volume1", LOUT1, ROUT1,
122 0, 0xFF, 1, out_tlv),
123 SOC_DOUBLE_R_TLV("Digital Playback Volume2", LOUT2, ROUT2,
124 0, 0xFF, 1, out_tlv),
125 SOC_DOUBLE_R_TLV("Digital Playback Volume3", LOUT3, ROUT3,
126 0, 0xFF, 1, out_tlv),
127 SOC_DOUBLE_R_TLV("Digital Playback Volume4", LOUT4, ROUT4,
128 0, 0xFF, 1, out_tlv),
129 SOC_DOUBLE_R_TLV("Digital Playback Volume5", LOUT5, ROUT5,
130 0, 0xFF, 1, out_tlv),
131 SOC_DOUBLE_R_TLV("Digital Playback Volume6", LOUT6, ROUT6,
132 0, 0xFF, 1, out_tlv),
133};
134
135static const struct reg_default ak4613_reg[] = {
136 { 0x0, 0x0f }, { 0x1, 0x07 }, { 0x2, 0x3f }, { 0x3, 0x20 },
137 { 0x4, 0x20 }, { 0x5, 0x55 }, { 0x6, 0x05 }, { 0x7, 0x07 },
138 { 0x8, 0x0f }, { 0x9, 0x07 }, { 0xa, 0x3f }, { 0xb, 0x00 },
139 { 0xc, 0x00 }, { 0xd, 0x00 }, { 0xe, 0x00 }, { 0xf, 0x00 },
140 { 0x10, 0x00 }, { 0x11, 0x00 }, { 0x12, 0x00 }, { 0x13, 0x00 },
141 { 0x14, 0x00 }, { 0x15, 0x00 }, { 0x16, 0x00 },
142};
143
144#define AUDIO_IFACE_TO_VAL(fmts) ((fmts - ak4613_iface) << 3)
145#define AUDIO_IFACE(b, fmt) { b, SND_SOC_DAIFMT_##fmt }
146static const struct ak4613_interface ak4613_iface[] = {
147
148
149 [3] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(24, LEFT_J) },
150 [4] = { AUDIO_IFACE(24, I2S), AUDIO_IFACE(24, I2S) },
151};
152
153static const struct regmap_config ak4613_regmap_cfg = {
154 .reg_bits = 8,
155 .val_bits = 8,
156 .max_register = 0x16,
157 .reg_defaults = ak4613_reg,
158 .num_reg_defaults = ARRAY_SIZE(ak4613_reg),
159 .cache_type = REGCACHE_RBTREE,
160};
161
162static const struct of_device_id ak4613_of_match[] = {
163 { .compatible = "asahi-kasei,ak4613", .data = &ak4613_regmap_cfg },
164 {},
165};
166MODULE_DEVICE_TABLE(of, ak4613_of_match);
167
168static const struct i2c_device_id ak4613_i2c_id[] = {
169 { "ak4613", (kernel_ulong_t)&ak4613_regmap_cfg },
170 { }
171};
172MODULE_DEVICE_TABLE(i2c, ak4613_i2c_id);
173
174static const struct snd_soc_dapm_widget ak4613_dapm_widgets[] = {
175
176
177 SND_SOC_DAPM_OUTPUT("LOUT1"),
178 SND_SOC_DAPM_OUTPUT("LOUT2"),
179 SND_SOC_DAPM_OUTPUT("LOUT3"),
180 SND_SOC_DAPM_OUTPUT("LOUT4"),
181 SND_SOC_DAPM_OUTPUT("LOUT5"),
182 SND_SOC_DAPM_OUTPUT("LOUT6"),
183
184 SND_SOC_DAPM_OUTPUT("ROUT1"),
185 SND_SOC_DAPM_OUTPUT("ROUT2"),
186 SND_SOC_DAPM_OUTPUT("ROUT3"),
187 SND_SOC_DAPM_OUTPUT("ROUT4"),
188 SND_SOC_DAPM_OUTPUT("ROUT5"),
189 SND_SOC_DAPM_OUTPUT("ROUT6"),
190
191
192 SND_SOC_DAPM_INPUT("LIN1"),
193 SND_SOC_DAPM_INPUT("LIN2"),
194
195 SND_SOC_DAPM_INPUT("RIN1"),
196 SND_SOC_DAPM_INPUT("RIN2"),
197
198
199 SND_SOC_DAPM_DAC("DAC1", NULL, PW_MGMT3, 0, 0),
200 SND_SOC_DAPM_DAC("DAC2", NULL, PW_MGMT3, 1, 0),
201 SND_SOC_DAPM_DAC("DAC3", NULL, PW_MGMT3, 2, 0),
202 SND_SOC_DAPM_DAC("DAC4", NULL, PW_MGMT3, 3, 0),
203 SND_SOC_DAPM_DAC("DAC5", NULL, PW_MGMT3, 4, 0),
204 SND_SOC_DAPM_DAC("DAC6", NULL, PW_MGMT3, 5, 0),
205
206
207 SND_SOC_DAPM_ADC("ADC1", NULL, PW_MGMT2, 0, 0),
208 SND_SOC_DAPM_ADC("ADC2", NULL, PW_MGMT2, 1, 0),
209};
210
211static const struct snd_soc_dapm_route ak4613_intercon[] = {
212 {"LOUT1", NULL, "DAC1"},
213 {"LOUT2", NULL, "DAC2"},
214 {"LOUT3", NULL, "DAC3"},
215 {"LOUT4", NULL, "DAC4"},
216 {"LOUT5", NULL, "DAC5"},
217 {"LOUT6", NULL, "DAC6"},
218
219 {"ROUT1", NULL, "DAC1"},
220 {"ROUT2", NULL, "DAC2"},
221 {"ROUT3", NULL, "DAC3"},
222 {"ROUT4", NULL, "DAC4"},
223 {"ROUT5", NULL, "DAC5"},
224 {"ROUT6", NULL, "DAC6"},
225
226 {"DAC1", NULL, "Playback"},
227 {"DAC2", NULL, "Playback"},
228 {"DAC3", NULL, "Playback"},
229 {"DAC4", NULL, "Playback"},
230 {"DAC5", NULL, "Playback"},
231 {"DAC6", NULL, "Playback"},
232
233 {"Capture", NULL, "ADC1"},
234 {"Capture", NULL, "ADC2"},
235
236 {"ADC1", NULL, "LIN1"},
237 {"ADC2", NULL, "LIN2"},
238
239 {"ADC1", NULL, "RIN1"},
240 {"ADC2", NULL, "RIN2"},
241};
242
243static void ak4613_dai_shutdown(struct snd_pcm_substream *substream,
244 struct snd_soc_dai *dai)
245{
246 struct snd_soc_component *component = dai->component;
247 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
248 struct device *dev = component->dev;
249
250 mutex_lock(&priv->lock);
251 priv->cnt--;
252 if (priv->cnt < 0) {
253 dev_err(dev, "unexpected counter error\n");
254 priv->cnt = 0;
255 }
256 if (!priv->cnt)
257 priv->iface = NULL;
258 mutex_unlock(&priv->lock);
259}
260
261static void ak4613_hw_constraints(struct ak4613_priv *priv,
262 struct snd_pcm_runtime *runtime)
263{
264 static const unsigned int ak4613_rates[] = {
265 32000,
266 44100,
267 48000,
268 64000,
269 88200,
270 96000,
271 176400,
272 192000,
273 };
274 struct snd_pcm_hw_constraint_list *constraint = &priv->constraint;
275 unsigned int fs;
276 int i;
277
278 constraint->list = ak4613_rates;
279 constraint->mask = 0;
280 constraint->count = 0;
281
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290
291
292
293 for (i = 0; i < ARRAY_SIZE(ak4613_rates); i++) {
294
295 fs = (ak4613_rates[i] <= 96000) ? 256 : 128;
296
297 if (priv->sysclk >= ak4613_rates[i] * fs)
298 constraint->count = i + 1;
299 }
300
301 snd_pcm_hw_constraint_list(runtime, 0,
302 SNDRV_PCM_HW_PARAM_RATE, constraint);
303}
304
305static int ak4613_dai_startup(struct snd_pcm_substream *substream,
306 struct snd_soc_dai *dai)
307{
308 struct snd_soc_component *component = dai->component;
309 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
310
311 priv->cnt++;
312
313 ak4613_hw_constraints(priv, substream->runtime);
314
315 return 0;
316}
317
318static int ak4613_dai_set_sysclk(struct snd_soc_dai *codec_dai,
319 int clk_id, unsigned int freq, int dir)
320{
321 struct snd_soc_component *component = codec_dai->component;
322 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
323
324 priv->sysclk = freq;
325
326 return 0;
327}
328
329static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
330{
331 struct snd_soc_component *component = dai->component;
332 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
333
334 fmt &= SND_SOC_DAIFMT_FORMAT_MASK;
335
336 switch (fmt) {
337 case SND_SOC_DAIFMT_LEFT_J:
338 case SND_SOC_DAIFMT_I2S:
339 priv->fmt = fmt;
340 break;
341 default:
342 return -EINVAL;
343 }
344
345 return 0;
346}
347
348static bool ak4613_dai_fmt_matching(const struct ak4613_interface *iface,
349 int is_play,
350 unsigned int fmt, unsigned int width)
351{
352 const struct ak4613_formats *fmts;
353
354 fmts = (is_play) ? &iface->playback : &iface->capture;
355
356 if (fmts->fmt != fmt)
357 return false;
358
359 if (fmts->width != width)
360 return false;
361
362 return true;
363}
364
365static int ak4613_dai_hw_params(struct snd_pcm_substream *substream,
366 struct snd_pcm_hw_params *params,
367 struct snd_soc_dai *dai)
368{
369 struct snd_soc_component *component = dai->component;
370 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
371 const struct ak4613_interface *iface;
372 struct device *dev = component->dev;
373 unsigned int width = params_width(params);
374 unsigned int fmt = priv->fmt;
375 unsigned int rate;
376 int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
377 int i, ret;
378 u8 fmt_ctrl, ctrl2;
379
380 rate = params_rate(params);
381 switch (rate) {
382 case 32000:
383 case 44100:
384 case 48000:
385 ctrl2 = DFS_NORMAL_SPEED;
386 break;
387 case 64000:
388 case 88200:
389 case 96000:
390 ctrl2 = DFS_DOUBLE_SPEED;
391 break;
392 case 176400:
393 case 192000:
394 ctrl2 = DFS_QUAD_SPEED;
395 break;
396 default:
397 return -EINVAL;
398 }
399 priv->rate = rate;
400
401
402
403
404
405
406 fmt_ctrl = NO_FMT;
407 ret = -EINVAL;
408 iface = NULL;
409
410 mutex_lock(&priv->lock);
411 if (priv->iface) {
412 if (ak4613_dai_fmt_matching(priv->iface, is_play, fmt, width))
413 iface = priv->iface;
414 } else {
415 for (i = ARRAY_SIZE(ak4613_iface) - 1; i >= 0; i--) {
416 if (!ak4613_dai_fmt_matching(ak4613_iface + i,
417 is_play,
418 fmt, width))
419 continue;
420 iface = ak4613_iface + i;
421 break;
422 }
423 }
424
425 if ((priv->iface == NULL) ||
426 (priv->iface == iface)) {
427 priv->iface = iface;
428 ret = 0;
429 }
430 mutex_unlock(&priv->lock);
431
432 if (ret < 0)
433 goto hw_params_end;
434
435 fmt_ctrl = AUDIO_IFACE_TO_VAL(iface);
436
437 snd_soc_component_update_bits(component, CTRL1, FMT_MASK, fmt_ctrl);
438 snd_soc_component_update_bits(component, CTRL2, DFS_MASK, ctrl2);
439
440 snd_soc_component_update_bits(component, ICTRL, ICTRL_MASK, priv->ic);
441 snd_soc_component_update_bits(component, OCTRL, OCTRL_MASK, priv->oc);
442
443hw_params_end:
444 if (ret < 0)
445 dev_warn(dev, "unsupported data width/format combination\n");
446
447 return ret;
448}
449
450static int ak4613_set_bias_level(struct snd_soc_component *component,
451 enum snd_soc_bias_level level)
452{
453 u8 mgmt1 = 0;
454
455 switch (level) {
456 case SND_SOC_BIAS_ON:
457 mgmt1 |= RSTN;
458
459 case SND_SOC_BIAS_PREPARE:
460 mgmt1 |= PMADC | PMDAC;
461
462 case SND_SOC_BIAS_STANDBY:
463 mgmt1 |= PMVR;
464
465 case SND_SOC_BIAS_OFF:
466 default:
467 break;
468 }
469
470 snd_soc_component_write(component, PW_MGMT1, mgmt1);
471
472 return 0;
473}
474
475static void ak4613_dummy_write(struct work_struct *work)
476{
477 struct ak4613_priv *priv = container_of(work,
478 struct ak4613_priv,
479 dummy_write_work);
480 struct snd_soc_component *component = priv->component;
481 unsigned int mgmt1;
482 unsigned int mgmt3;
483
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493
494
495 udelay(5000000 / priv->rate);
496
497 snd_soc_component_read(component, PW_MGMT1, &mgmt1);
498 snd_soc_component_read(component, PW_MGMT3, &mgmt3);
499
500 snd_soc_component_write(component, PW_MGMT1, mgmt1);
501 snd_soc_component_write(component, PW_MGMT3, mgmt3);
502}
503
504static int ak4613_dai_trigger(struct snd_pcm_substream *substream, int cmd,
505 struct snd_soc_dai *dai)
506{
507 struct snd_soc_component *component = dai->component;
508 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
509
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532
533 if ((cmd != SNDRV_PCM_TRIGGER_START) &&
534 (cmd != SNDRV_PCM_TRIGGER_RESUME))
535 return 0;
536
537 if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
538 return 0;
539
540 priv->component = component;
541 schedule_work(&priv->dummy_write_work);
542
543 return 0;
544}
545
546static const struct snd_soc_dai_ops ak4613_dai_ops = {
547 .startup = ak4613_dai_startup,
548 .shutdown = ak4613_dai_shutdown,
549 .set_sysclk = ak4613_dai_set_sysclk,
550 .set_fmt = ak4613_dai_set_fmt,
551 .trigger = ak4613_dai_trigger,
552 .hw_params = ak4613_dai_hw_params,
553};
554
555#define AK4613_PCM_RATE (SNDRV_PCM_RATE_32000 |\
556 SNDRV_PCM_RATE_44100 |\
557 SNDRV_PCM_RATE_48000 |\
558 SNDRV_PCM_RATE_64000 |\
559 SNDRV_PCM_RATE_88200 |\
560 SNDRV_PCM_RATE_96000 |\
561 SNDRV_PCM_RATE_176400 |\
562 SNDRV_PCM_RATE_192000)
563#define AK4613_PCM_FMTBIT (SNDRV_PCM_FMTBIT_S24_LE)
564
565static struct snd_soc_dai_driver ak4613_dai = {
566 .name = "ak4613-hifi",
567 .playback = {
568 .stream_name = "Playback",
569 .channels_min = 2,
570 .channels_max = 2,
571 .rates = AK4613_PCM_RATE,
572 .formats = AK4613_PCM_FMTBIT,
573 },
574 .capture = {
575 .stream_name = "Capture",
576 .channels_min = 2,
577 .channels_max = 2,
578 .rates = AK4613_PCM_RATE,
579 .formats = AK4613_PCM_FMTBIT,
580 },
581 .ops = &ak4613_dai_ops,
582 .symmetric_rates = 1,
583};
584
585static int ak4613_suspend(struct snd_soc_component *component)
586{
587 struct regmap *regmap = dev_get_regmap(component->dev, NULL);
588
589 regcache_cache_only(regmap, true);
590 regcache_mark_dirty(regmap);
591 return 0;
592}
593
594static int ak4613_resume(struct snd_soc_component *component)
595{
596 struct regmap *regmap = dev_get_regmap(component->dev, NULL);
597
598 regcache_cache_only(regmap, false);
599 return regcache_sync(regmap);
600}
601
602static const struct snd_soc_component_driver soc_component_dev_ak4613 = {
603 .suspend = ak4613_suspend,
604 .resume = ak4613_resume,
605 .set_bias_level = ak4613_set_bias_level,
606 .controls = ak4613_snd_controls,
607 .num_controls = ARRAY_SIZE(ak4613_snd_controls),
608 .dapm_widgets = ak4613_dapm_widgets,
609 .num_dapm_widgets = ARRAY_SIZE(ak4613_dapm_widgets),
610 .dapm_routes = ak4613_intercon,
611 .num_dapm_routes = ARRAY_SIZE(ak4613_intercon),
612 .idle_bias_on = 1,
613 .endianness = 1,
614 .non_legacy_dai_naming = 1,
615};
616
617static void ak4613_parse_of(struct ak4613_priv *priv,
618 struct device *dev)
619{
620 struct device_node *np = dev->of_node;
621 char prop[32];
622 int i;
623
624
625 for (i = 0; i < 2; i++) {
626 snprintf(prop, sizeof(prop), "asahi-kasei,in%d-single-end", i + 1);
627 if (!of_get_property(np, prop, NULL))
628 priv->ic |= 1 << i;
629 }
630
631
632 for (i = 0; i < 6; i++) {
633 snprintf(prop, sizeof(prop), "asahi-kasei,out%d-single-end", i + 1);
634 if (!of_get_property(np, prop, NULL))
635 priv->oc |= 1 << i;
636 }
637}
638
639static int ak4613_i2c_probe(struct i2c_client *i2c,
640 const struct i2c_device_id *id)
641{
642 struct device *dev = &i2c->dev;
643 struct device_node *np = dev->of_node;
644 const struct regmap_config *regmap_cfg;
645 struct regmap *regmap;
646 struct ak4613_priv *priv;
647
648 regmap_cfg = NULL;
649 if (np) {
650 const struct of_device_id *of_id;
651
652 of_id = of_match_device(ak4613_of_match, dev);
653 if (of_id)
654 regmap_cfg = of_id->data;
655 } else {
656 regmap_cfg = (const struct regmap_config *)id->driver_data;
657 }
658
659 if (!regmap_cfg)
660 return -EINVAL;
661
662 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
663 if (!priv)
664 return -ENOMEM;
665
666 ak4613_parse_of(priv, dev);
667
668 priv->iface = NULL;
669 priv->cnt = 0;
670 priv->sysclk = 0;
671 INIT_WORK(&priv->dummy_write_work, ak4613_dummy_write);
672
673 mutex_init(&priv->lock);
674
675 i2c_set_clientdata(i2c, priv);
676
677 regmap = devm_regmap_init_i2c(i2c, regmap_cfg);
678 if (IS_ERR(regmap))
679 return PTR_ERR(regmap);
680
681 return devm_snd_soc_register_component(dev, &soc_component_dev_ak4613,
682 &ak4613_dai, 1);
683}
684
685static int ak4613_i2c_remove(struct i2c_client *client)
686{
687 return 0;
688}
689
690static struct i2c_driver ak4613_i2c_driver = {
691 .driver = {
692 .name = "ak4613-codec",
693 .of_match_table = ak4613_of_match,
694 },
695 .probe = ak4613_i2c_probe,
696 .remove = ak4613_i2c_remove,
697 .id_table = ak4613_i2c_id,
698};
699
700module_i2c_driver(ak4613_i2c_driver);
701
702MODULE_DESCRIPTION("Soc AK4613 driver");
703MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
704MODULE_LICENSE("GPL v2");
705
