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1// SPDX-License-Identifier: GPL-2.0
2//
3// ak4613.c -- Asahi Kasei ALSA Soc Audio driver
4//
5// Copyright (C) 2015 Renesas Electronics Corporation
6// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
7//
8// Based on ak4642.c by Kuninori Morimoto
9// Based on wm8731.c by Richard Purdie
10// Based on ak4535.c by Richard Purdie
11// Based on wm8753.c by Liam Girdwood
12
13/*
14 * +-------+
15 * |AK4613 |
16 * SDTO1 <-| |
17 * | |
18 * SDTI1 ->| |
19 * SDTI2 ->| |
20 * SDTI3 ->| |
21 * +-------+
22 *
23 * +---+
24 * clk | |___________________________________________...
25 *
26 * [TDM512]
27 * SDTO1 [L1][R1][L2][R2]
28 * SDTI1 [L1][R1][L2][R2][L3][R3][L4][R4][L5][R5][L6][R6]
29 *
30 * [TDM256]
31 * SDTO1 [L1][R1][L2][R2]
32 * SDTI1 [L1][R1][L2][R2][L3][R3][L4][R4]
33 * SDTI2 [L5][R5][L6][R6]
34 *
35 * [TDM128]
36 * SDTO1 [L1][R1][L2][R2]
37 * SDTI1 [L1][R1][L2][R2]
38 * SDTI2 [L3][R3][L4][R4]
39 * SDTI3 [L5][R5][L6][R6]
40 *
41 * [STEREO]
42 * Playback 2ch : SDTI1
43 * Capture 2ch : SDTO1
44 *
45 * [TDM512]
46 * Playback 12ch : SDTI1
47 * Capture 4ch : SDTO1
48 *
49 * [TDM256]
50 * Playback 12ch : SDTI1 + SDTI2
51 * Playback 8ch : SDTI1
52 * Capture 4ch : SDTO1
53 *
54 * [TDM128]
55 * Playback 12ch : SDTI1 + SDTI2 + SDTI3
56 * Playback 8ch : SDTI1 + SDTI2
57 * Playback 4ch : SDTI1
58 * Capture 4ch : SDTO1
59 *
60 *
61 * !!! NOTE !!!
62 *
63 * Renesas is the only user of ak4613 on upstream so far,
64 * but the chip connection is like below.
65 * Thus, Renesas can't test all connection case.
66 * Tested TDM is very limited.
67 *
68 * +-----+ +-----------+
69 * | SoC | | AK4613 |
70 * | |<-----|SDTO1 IN1|<-- Mic
71 * | | | IN2|
72 * | | | |
73 * | |----->|SDTI1 OUT1|--> Headphone
74 * +-----+ |SDTI2 OUT2|
75 * |SDTI3 OUT3|
76 * | OUT4|
77 * | OUT5|
78 * | OUT6|
79 * +-----------+
80 *
81 * Renesas SoC can handle [2, 6,8] channels.
82 * Ak4613 can handle [2,4, 8,12] channels.
83 *
84 * Because of above HW connection and available channels number,
85 * Renesas could test are ...
86 *
87 * [STEREO] Playback 2ch : SDTI1
88 * Capture 2ch : SDTO1
89 * [TDM256] Playback 8ch : SDTI1 (*)
90 *
91 * (*) it used 8ch data between SoC <-> AK4613 on TDM256 mode,
92 * but could confirm is only first 2ch because only 1
93 * Headphone is connected.
94 *
95 * see
96 * AK4613_ENABLE_TDM_TEST
97 */
98#include <linux/clk.h>
99#include <linux/delay.h>
100#include <linux/i2c.h>
101#include <linux/slab.h>
102#include <linux/of.h>
103#include <linux/of_graph.h>
104#include <linux/module.h>
105#include <linux/regmap.h>
106#include <sound/soc.h>
107#include <sound/pcm_params.h>
108#include <sound/tlv.h>
109
110#define PW_MGMT1 0x00 /* Power Management 1 */
111#define PW_MGMT2 0x01 /* Power Management 2 */
112#define PW_MGMT3 0x02 /* Power Management 3 */
113#define CTRL1 0x03 /* Control 1 */
114#define CTRL2 0x04 /* Control 2 */
115#define DEMP1 0x05 /* De-emphasis1 */
116#define DEMP2 0x06 /* De-emphasis2 */
117#define OFD 0x07 /* Overflow Detect */
118#define ZRD 0x08 /* Zero Detect */
119#define ICTRL 0x09 /* Input Control */
120#define OCTRL 0x0a /* Output Control */
121#define LOUT1 0x0b /* LOUT1 Volume Control */
122#define ROUT1 0x0c /* ROUT1 Volume Control */
123#define LOUT2 0x0d /* LOUT2 Volume Control */
124#define ROUT2 0x0e /* ROUT2 Volume Control */
125#define LOUT3 0x0f /* LOUT3 Volume Control */
126#define ROUT3 0x10 /* ROUT3 Volume Control */
127#define LOUT4 0x11 /* LOUT4 Volume Control */
128#define ROUT4 0x12 /* ROUT4 Volume Control */
129#define LOUT5 0x13 /* LOUT5 Volume Control */
130#define ROUT5 0x14 /* ROUT5 Volume Control */
131#define LOUT6 0x15 /* LOUT6 Volume Control */
132#define ROUT6 0x16 /* ROUT6 Volume Control */
133
134/* PW_MGMT1 */
135#define RSTN BIT(0)
136#define PMDAC BIT(1)
137#define PMADC BIT(2)
138#define PMVR BIT(3)
139
140/* PW_MGMT2 */
141#define PMAD_ALL 0x7
142
143/* PW_MGMT3 */
144#define PMDA_ALL 0x3f
145
146/* CTRL1 */
147#define DIF0 BIT(3)
148#define DIF1 BIT(4)
149#define DIF2 BIT(5)
150#define TDM0 BIT(6)
151#define TDM1 BIT(7)
152#define NO_FMT (0xff)
153#define FMT_MASK (0xf8)
154
155/* CTRL2 */
156#define DFS_MASK (3 << 2)
157#define DFS_NORMAL_SPEED (0 << 2)
158#define DFS_DOUBLE_SPEED (1 << 2)
159#define DFS_QUAD_SPEED (2 << 2)
160
161/* ICTRL */
162#define ICTRL_MASK (0x3)
163
164/* OCTRL */
165#define OCTRL_MASK (0x3F)
166
167/*
168 * configs
169 *
170 * 0x000000BA
171 *
172 * B : AK4613_CONFIG_SDTI_x
173 * A : AK4613_CONFIG_MODE_x
174 */
175#define AK4613_CONFIG_SET(priv, x) priv->configs |= AK4613_CONFIG_##x
176#define AK4613_CONFIG_GET(priv, x) (priv->configs & AK4613_CONFIG_##x##_MASK)
177
178/*
179 * AK4613_CONFIG_SDTI_x
180 *
181 * It indicates how many SDTIx is connected.
182 */
183#define AK4613_CONFIG_SDTI_MASK (0xF << 4)
184#define AK4613_CONFIG_SDTI(x) (((x) & 0xF) << 4)
185#define AK4613_CONFIG_SDTI_set(priv, x) AK4613_CONFIG_SET(priv, SDTI(x))
186#define AK4613_CONFIG_SDTI_get(priv) ((AK4613_CONFIG_GET(priv, SDTI) >> 4) & 0xF)
187
188/*
189 * AK4613_CONFIG_MODE_x
190 *
191 * Same as Ctrl1 :: TDM1/TDM0
192 * No shift is requested
193 * see
194 * AK4613_CTRL1_TO_MODE()
195 * Table 11/12/13/14
196 */
197#define AK4613_CONFIG_MODE_MASK (0xF)
198#define AK4613_CONFIG_MODE_STEREO (0x0)
199#define AK4613_CONFIG_MODE_TDM512 (0x1)
200#define AK4613_CONFIG_MODE_TDM256 (0x2)
201#define AK4613_CONFIG_MODE_TDM128 (0x3)
202
203/*
204 * !!!! FIXME !!!!
205 *
206 * Because of testable HW limitation, TDM256 8ch TDM was only tested.
207 * This driver uses AK4613_ENABLE_TDM_TEST instead of new DT property so far.
208 * Don't hesitate to update driver, you don't need to care compatible
209 * with Renesas.
210 *
211 * #define AK4613_ENABLE_TDM_TEST
212 */
213
214struct ak4613_interface {
215 unsigned int width;
216 unsigned int fmt;
217 u8 dif;
218};
219
220struct ak4613_priv {
221 struct mutex lock;
222 struct snd_pcm_hw_constraint_list constraint_rates;
223 struct snd_pcm_hw_constraint_list constraint_channels;
224 struct work_struct dummy_write_work;
225 struct snd_soc_component *component;
226 unsigned int rate;
227 unsigned int sysclk;
228
229 unsigned int fmt;
230 unsigned int configs;
231 int cnt;
232 u8 ctrl1;
233 u8 oc;
234 u8 ic;
235};
236
237/*
238 * Playback Volume
239 *
240 * max : 0x00 : 0 dB
241 * ( 0.5 dB step )
242 * min : 0xFE : -127.0 dB
243 * mute: 0xFF
244 */
245static const DECLARE_TLV_DB_SCALE(out_tlv, -12750, 50, 1);
246
247static const struct snd_kcontrol_new ak4613_snd_controls[] = {
248 SOC_DOUBLE_R_TLV("Digital Playback Volume1", LOUT1, ROUT1,
249 0, 0xFF, 1, out_tlv),
250 SOC_DOUBLE_R_TLV("Digital Playback Volume2", LOUT2, ROUT2,
251 0, 0xFF, 1, out_tlv),
252 SOC_DOUBLE_R_TLV("Digital Playback Volume3", LOUT3, ROUT3,
253 0, 0xFF, 1, out_tlv),
254 SOC_DOUBLE_R_TLV("Digital Playback Volume4", LOUT4, ROUT4,
255 0, 0xFF, 1, out_tlv),
256 SOC_DOUBLE_R_TLV("Digital Playback Volume5", LOUT5, ROUT5,
257 0, 0xFF, 1, out_tlv),
258 SOC_DOUBLE_R_TLV("Digital Playback Volume6", LOUT6, ROUT6,
259 0, 0xFF, 1, out_tlv),
260};
261
262static const struct reg_default ak4613_reg[] = {
263 { 0x0, 0x0f }, { 0x1, 0x07 }, { 0x2, 0x3f }, { 0x3, 0x20 },
264 { 0x4, 0x20 }, { 0x5, 0x55 }, { 0x6, 0x05 }, { 0x7, 0x07 },
265 { 0x8, 0x0f }, { 0x9, 0x07 }, { 0xa, 0x3f }, { 0xb, 0x00 },
266 { 0xc, 0x00 }, { 0xd, 0x00 }, { 0xe, 0x00 }, { 0xf, 0x00 },
267 { 0x10, 0x00 }, { 0x11, 0x00 }, { 0x12, 0x00 }, { 0x13, 0x00 },
268 { 0x14, 0x00 }, { 0x15, 0x00 }, { 0x16, 0x00 },
269};
270
271/*
272 * CTRL1 register
273 * see
274 * Table 11/12/13/14
275 */
276#define AUDIO_IFACE(_dif, _width, _fmt) \
277 { \
278 .dif = _dif, \
279 .width = _width, \
280 .fmt = SND_SOC_DAIFMT_##_fmt,\
281 }
282static const struct ak4613_interface ak4613_iface[] = {
283 /* It doesn't support asymmetric format */
284
285 AUDIO_IFACE(0x03, 24, LEFT_J),
286 AUDIO_IFACE(0x04, 24, I2S),
287};
288#define AK4613_CTRL1_TO_MODE(priv) ((priv)->ctrl1 >> 6) /* AK4613_CONFIG_MODE_x */
289
290static const struct regmap_config ak4613_regmap_cfg = {
291 .reg_bits = 8,
292 .val_bits = 8,
293 .max_register = 0x16,
294 .reg_defaults = ak4613_reg,
295 .num_reg_defaults = ARRAY_SIZE(ak4613_reg),
296 .cache_type = REGCACHE_RBTREE,
297};
298
299static const struct of_device_id ak4613_of_match[] = {
300 { .compatible = "asahi-kasei,ak4613", .data = &ak4613_regmap_cfg },
301 {},
302};
303MODULE_DEVICE_TABLE(of, ak4613_of_match);
304
305static const struct i2c_device_id ak4613_i2c_id[] = {
306 { "ak4613", (kernel_ulong_t)&ak4613_regmap_cfg },
307 { }
308};
309MODULE_DEVICE_TABLE(i2c, ak4613_i2c_id);
310
311static const struct snd_soc_dapm_widget ak4613_dapm_widgets[] = {
312
313 /* Outputs */
314 SND_SOC_DAPM_OUTPUT("LOUT1"),
315 SND_SOC_DAPM_OUTPUT("LOUT2"),
316 SND_SOC_DAPM_OUTPUT("LOUT3"),
317 SND_SOC_DAPM_OUTPUT("LOUT4"),
318 SND_SOC_DAPM_OUTPUT("LOUT5"),
319 SND_SOC_DAPM_OUTPUT("LOUT6"),
320
321 SND_SOC_DAPM_OUTPUT("ROUT1"),
322 SND_SOC_DAPM_OUTPUT("ROUT2"),
323 SND_SOC_DAPM_OUTPUT("ROUT3"),
324 SND_SOC_DAPM_OUTPUT("ROUT4"),
325 SND_SOC_DAPM_OUTPUT("ROUT5"),
326 SND_SOC_DAPM_OUTPUT("ROUT6"),
327
328 /* Inputs */
329 SND_SOC_DAPM_INPUT("LIN1"),
330 SND_SOC_DAPM_INPUT("LIN2"),
331
332 SND_SOC_DAPM_INPUT("RIN1"),
333 SND_SOC_DAPM_INPUT("RIN2"),
334
335 /* DAC */
336 SND_SOC_DAPM_DAC("DAC1", NULL, PW_MGMT3, 0, 0),
337 SND_SOC_DAPM_DAC("DAC2", NULL, PW_MGMT3, 1, 0),
338 SND_SOC_DAPM_DAC("DAC3", NULL, PW_MGMT3, 2, 0),
339 SND_SOC_DAPM_DAC("DAC4", NULL, PW_MGMT3, 3, 0),
340 SND_SOC_DAPM_DAC("DAC5", NULL, PW_MGMT3, 4, 0),
341 SND_SOC_DAPM_DAC("DAC6", NULL, PW_MGMT3, 5, 0),
342
343 /* ADC */
344 SND_SOC_DAPM_ADC("ADC1", NULL, PW_MGMT2, 0, 0),
345 SND_SOC_DAPM_ADC("ADC2", NULL, PW_MGMT2, 1, 0),
346};
347
348static const struct snd_soc_dapm_route ak4613_intercon[] = {
349 {"LOUT1", NULL, "DAC1"},
350 {"LOUT2", NULL, "DAC2"},
351 {"LOUT3", NULL, "DAC3"},
352 {"LOUT4", NULL, "DAC4"},
353 {"LOUT5", NULL, "DAC5"},
354 {"LOUT6", NULL, "DAC6"},
355
356 {"ROUT1", NULL, "DAC1"},
357 {"ROUT2", NULL, "DAC2"},
358 {"ROUT3", NULL, "DAC3"},
359 {"ROUT4", NULL, "DAC4"},
360 {"ROUT5", NULL, "DAC5"},
361 {"ROUT6", NULL, "DAC6"},
362
363 {"DAC1", NULL, "Playback"},
364 {"DAC2", NULL, "Playback"},
365 {"DAC3", NULL, "Playback"},
366 {"DAC4", NULL, "Playback"},
367 {"DAC5", NULL, "Playback"},
368 {"DAC6", NULL, "Playback"},
369
370 {"Capture", NULL, "ADC1"},
371 {"Capture", NULL, "ADC2"},
372
373 {"ADC1", NULL, "LIN1"},
374 {"ADC2", NULL, "LIN2"},
375
376 {"ADC1", NULL, "RIN1"},
377 {"ADC2", NULL, "RIN2"},
378};
379
380static void ak4613_dai_shutdown(struct snd_pcm_substream *substream,
381 struct snd_soc_dai *dai)
382{
383 struct snd_soc_component *component = dai->component;
384 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
385 struct device *dev = component->dev;
386
387 mutex_lock(&priv->lock);
388 priv->cnt--;
389 if (priv->cnt < 0) {
390 dev_err(dev, "unexpected counter error\n");
391 priv->cnt = 0;
392 }
393 if (!priv->cnt)
394 priv->ctrl1 = 0;
395 mutex_unlock(&priv->lock);
396}
397
398static void ak4613_hw_constraints(struct ak4613_priv *priv,
399 struct snd_pcm_substream *substream)
400{
401 struct snd_pcm_runtime *runtime = substream->runtime;
402 static const unsigned int ak4613_rates[] = {
403 32000,
404 44100,
405 48000,
406 64000,
407 88200,
408 96000,
409 176400,
410 192000,
411 };
412#define AK4613_CHANNEL_2 0
413#define AK4613_CHANNEL_4 1
414#define AK4613_CHANNEL_8 2
415#define AK4613_CHANNEL_12 3
416#define AK4613_CHANNEL_NONE -1
417 static const unsigned int ak4613_channels[] = {
418 [AK4613_CHANNEL_2] = 2,
419 [AK4613_CHANNEL_4] = 4,
420 [AK4613_CHANNEL_8] = 8,
421 [AK4613_CHANNEL_12] = 12,
422 };
423#define MODE_MAX 4
424#define SDTx_MAX 4
425#define MASK(x) (1 << AK4613_CHANNEL_##x)
426 static const int mask_list[MODE_MAX][SDTx_MAX] = {
427 /* SDTO SDTIx1 SDTIx2 SDTIx3 */
428 [AK4613_CONFIG_MODE_STEREO] = { MASK(2), MASK(2), MASK(2), MASK(2)},
429 [AK4613_CONFIG_MODE_TDM512] = { MASK(4), MASK(12), MASK(12), MASK(12)},
430 [AK4613_CONFIG_MODE_TDM256] = { MASK(4), MASK(8), MASK(8)|MASK(12), MASK(8)|MASK(12)},
431 [AK4613_CONFIG_MODE_TDM128] = { MASK(4), MASK(4), MASK(4)|MASK(8), MASK(4)|MASK(8)|MASK(12)},
432 };
433 struct snd_pcm_hw_constraint_list *constraint;
434 unsigned int mask;
435 unsigned int mode;
436 unsigned int fs;
437 int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
438 int sdti_num;
439 int i;
440
441 constraint = &priv->constraint_rates;
442 constraint->list = ak4613_rates;
443 constraint->mask = 0;
444 constraint->count = 0;
445
446 /*
447 * Slave Mode
448 * Normal: [32kHz, 48kHz] : 256fs,384fs or 512fs
449 * Double: [64kHz, 96kHz] : 256fs
450 * Quad : [128kHz,192kHz]: 128fs
451 *
452 * Master mode
453 * Normal: [32kHz, 48kHz] : 256fs or 512fs
454 * Double: [64kHz, 96kHz] : 256fs
455 * Quad : [128kHz,192kHz]: 128fs
456 */
457 for (i = 0; i < ARRAY_SIZE(ak4613_rates); i++) {
458 /* minimum fs on each range */
459 fs = (ak4613_rates[i] <= 96000) ? 256 : 128;
460
461 if (priv->sysclk >= ak4613_rates[i] * fs)
462 constraint->count = i + 1;
463 }
464
465 snd_pcm_hw_constraint_list(runtime, 0,
466 SNDRV_PCM_HW_PARAM_RATE, constraint);
467
468
469 sdti_num = AK4613_CONFIG_SDTI_get(priv);
470 if (WARN_ON(sdti_num >= SDTx_MAX))
471 return;
472
473 if (priv->cnt) {
474 /*
475 * If it was already working,
476 * the constraint is same as working mode.
477 */
478 mode = AK4613_CTRL1_TO_MODE(priv);
479 mask = 0; /* no default */
480 } else {
481 /*
482 * It is not yet working,
483 * the constraint is based on board configs.
484 * STEREO mask is default
485 */
486 mode = AK4613_CONFIG_GET(priv, MODE);
487 mask = mask_list[AK4613_CONFIG_MODE_STEREO][is_play * sdti_num];
488 }
489
490 if (WARN_ON(mode >= MODE_MAX))
491 return;
492
493 /* add each mode mask */
494 mask |= mask_list[mode][is_play * sdti_num];
495
496 constraint = &priv->constraint_channels;
497 constraint->list = ak4613_channels;
498 constraint->mask = mask;
499 constraint->count = sizeof(ak4613_channels);
500 snd_pcm_hw_constraint_list(runtime, 0,
501 SNDRV_PCM_HW_PARAM_CHANNELS, constraint);
502}
503
504static int ak4613_dai_startup(struct snd_pcm_substream *substream,
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
510 mutex_lock(&priv->lock);
511 ak4613_hw_constraints(priv, substream);
512 priv->cnt++;
513 mutex_unlock(&priv->lock);
514
515 return 0;
516}
517
518static int ak4613_dai_set_sysclk(struct snd_soc_dai *codec_dai,
519 int clk_id, unsigned int freq, int dir)
520{
521 struct snd_soc_component *component = codec_dai->component;
522 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
523
524 priv->sysclk = freq;
525
526 return 0;
527}
528
529static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int format)
530{
531 struct snd_soc_component *component = dai->component;
532 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
533 unsigned int fmt;
534
535 fmt = format & SND_SOC_DAIFMT_FORMAT_MASK;
536 switch (fmt) {
537 case SND_SOC_DAIFMT_LEFT_J:
538 case SND_SOC_DAIFMT_I2S:
539 priv->fmt = fmt;
540 break;
541 default:
542 return -EINVAL;
543 }
544
545 fmt = format & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK;
546 switch (fmt) {
547 case SND_SOC_DAIFMT_CBC_CFC:
548 break;
549 default:
550 /*
551 * SUPPORTME
552 *
553 * "clock provider" is not yet supperted
554 */
555 return -EINVAL;
556 }
557
558 return 0;
559}
560
561static int ak4613_dai_hw_params(struct snd_pcm_substream *substream,
562 struct snd_pcm_hw_params *params,
563 struct snd_soc_dai *dai)
564{
565 struct snd_soc_component *component = dai->component;
566 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
567 struct device *dev = component->dev;
568 unsigned int width = params_width(params);
569 unsigned int fmt = priv->fmt;
570 unsigned int rate;
571 int i, ret;
572 u8 ctrl2;
573
574 rate = params_rate(params);
575 switch (rate) {
576 case 32000:
577 case 44100:
578 case 48000:
579 ctrl2 = DFS_NORMAL_SPEED;
580 break;
581 case 64000:
582 case 88200:
583 case 96000:
584 ctrl2 = DFS_DOUBLE_SPEED;
585 break;
586 case 176400:
587 case 192000:
588 ctrl2 = DFS_QUAD_SPEED;
589 break;
590 default:
591 return -EINVAL;
592 }
593 priv->rate = rate;
594
595 /*
596 * FIXME
597 *
598 * It doesn't have full TDM suppert yet
599 */
600 ret = -EINVAL;
601
602 mutex_lock(&priv->lock);
603 if (priv->cnt > 1) {
604 /*
605 * If it was already working, use current priv->ctrl1
606 */
607 ret = 0;
608 } else {
609 /*
610 * It is not yet working,
611 */
612 unsigned int channel = params_channels(params);
613 u8 tdm;
614
615 /* STEREO or TDM */
616 if (channel == 2)
617 tdm = AK4613_CONFIG_MODE_STEREO;
618 else
619 tdm = AK4613_CONFIG_GET(priv, MODE);
620
621 for (i = ARRAY_SIZE(ak4613_iface) - 1; i >= 0; i--) {
622 const struct ak4613_interface *iface = ak4613_iface + i;
623
624 if ((iface->fmt == fmt) && (iface->width == width)) {
625 /*
626 * Ctrl1
627 * | D7 | D6 | D5 | D4 | D3 | D2 | D1 | D0 |
628 * |TDM1|TDM0|DIF2|DIF1|DIF0|ATS1|ATS0|SMUTE|
629 * < tdm > < iface->dif >
630 */
631 priv->ctrl1 = (tdm << 6) | (iface->dif << 3);
632 ret = 0;
633 break;
634 }
635 }
636 }
637 mutex_unlock(&priv->lock);
638
639 if (ret < 0)
640 goto hw_params_end;
641
642 snd_soc_component_update_bits(component, CTRL1, FMT_MASK, priv->ctrl1);
643 snd_soc_component_update_bits(component, CTRL2, DFS_MASK, ctrl2);
644
645 snd_soc_component_update_bits(component, ICTRL, ICTRL_MASK, priv->ic);
646 snd_soc_component_update_bits(component, OCTRL, OCTRL_MASK, priv->oc);
647
648hw_params_end:
649 if (ret < 0)
650 dev_warn(dev, "unsupported data width/format combination\n");
651
652 return ret;
653}
654
655static int ak4613_set_bias_level(struct snd_soc_component *component,
656 enum snd_soc_bias_level level)
657{
658 u8 mgmt1 = 0;
659
660 switch (level) {
661 case SND_SOC_BIAS_ON:
662 mgmt1 |= RSTN;
663 fallthrough;
664 case SND_SOC_BIAS_PREPARE:
665 mgmt1 |= PMADC | PMDAC;
666 fallthrough;
667 case SND_SOC_BIAS_STANDBY:
668 mgmt1 |= PMVR;
669 fallthrough;
670 case SND_SOC_BIAS_OFF:
671 default:
672 break;
673 }
674
675 snd_soc_component_write(component, PW_MGMT1, mgmt1);
676
677 return 0;
678}
679
680static void ak4613_dummy_write(struct work_struct *work)
681{
682 struct ak4613_priv *priv = container_of(work,
683 struct ak4613_priv,
684 dummy_write_work);
685 struct snd_soc_component *component = priv->component;
686 unsigned int mgmt1;
687 unsigned int mgmt3;
688
689 /*
690 * PW_MGMT1 / PW_MGMT3 needs dummy write at least after 5 LR clocks
691 *
692 * Note
693 *
694 * To avoid extra delay, we want to avoid preemption here,
695 * but we can't. Because it uses I2C access which is using IRQ
696 * and sleep. Thus, delay might be more than 5 LR clocks
697 * see also
698 * ak4613_dai_trigger()
699 */
700 udelay(5000000 / priv->rate);
701
702 mgmt1 = snd_soc_component_read(component, PW_MGMT1);
703 mgmt3 = snd_soc_component_read(component, PW_MGMT3);
704
705 snd_soc_component_write(component, PW_MGMT1, mgmt1);
706 snd_soc_component_write(component, PW_MGMT3, mgmt3);
707}
708
709static int ak4613_dai_trigger(struct snd_pcm_substream *substream, int cmd,
710 struct snd_soc_dai *dai)
711{
712 struct snd_soc_component *component = dai->component;
713 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
714
715 /*
716 * FIXME
717 *
718 * PW_MGMT1 / PW_MGMT3 needs dummy write at least after 5 LR clocks
719 * from Power Down Release. Otherwise, Playback volume will be 0dB.
720 * To avoid complex multiple delay/dummy_write method from
721 * ak4613_set_bias_level() / SND_SOC_DAPM_DAC_E("DACx", ...),
722 * call it once here.
723 *
724 * But, unfortunately, we can't "write" here because here is atomic
725 * context (It uses I2C access for writing).
726 * Thus, use schedule_work() to switching to normal context
727 * immediately.
728 *
729 * Note
730 *
731 * Calling ak4613_dummy_write() function might be delayed.
732 * In such case, ak4613 volume might be temporarily 0dB when
733 * beggining of playback.
734 * see also
735 * ak4613_dummy_write()
736 */
737
738 if ((cmd != SNDRV_PCM_TRIGGER_START) &&
739 (cmd != SNDRV_PCM_TRIGGER_RESUME))
740 return 0;
741
742 if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
743 return 0;
744
745 priv->component = component;
746 schedule_work(&priv->dummy_write_work);
747
748 return 0;
749}
750
751/*
752 * Select below from Sound Card, not Auto
753 * SND_SOC_DAIFMT_CBC_CFC
754 * SND_SOC_DAIFMT_CBP_CFP
755 */
756static const u64 ak4613_dai_formats =
757 SND_SOC_POSSIBLE_DAIFMT_I2S |
758 SND_SOC_POSSIBLE_DAIFMT_LEFT_J;
759
760static const struct snd_soc_dai_ops ak4613_dai_ops = {
761 .startup = ak4613_dai_startup,
762 .shutdown = ak4613_dai_shutdown,
763 .set_sysclk = ak4613_dai_set_sysclk,
764 .set_fmt = ak4613_dai_set_fmt,
765 .trigger = ak4613_dai_trigger,
766 .hw_params = ak4613_dai_hw_params,
767 .auto_selectable_formats = &ak4613_dai_formats,
768 .num_auto_selectable_formats = 1,
769};
770
771#define AK4613_PCM_RATE (SNDRV_PCM_RATE_32000 |\
772 SNDRV_PCM_RATE_44100 |\
773 SNDRV_PCM_RATE_48000 |\
774 SNDRV_PCM_RATE_64000 |\
775 SNDRV_PCM_RATE_88200 |\
776 SNDRV_PCM_RATE_96000 |\
777 SNDRV_PCM_RATE_176400 |\
778 SNDRV_PCM_RATE_192000)
779#define AK4613_PCM_FMTBIT (SNDRV_PCM_FMTBIT_S24_LE)
780
781static struct snd_soc_dai_driver ak4613_dai = {
782 .name = "ak4613-hifi",
783 .playback = {
784 .stream_name = "Playback",
785 .channels_min = 2,
786 .channels_max = 12,
787 .rates = AK4613_PCM_RATE,
788 .formats = AK4613_PCM_FMTBIT,
789 },
790 .capture = {
791 .stream_name = "Capture",
792 .channels_min = 2,
793 .channels_max = 4,
794 .rates = AK4613_PCM_RATE,
795 .formats = AK4613_PCM_FMTBIT,
796 },
797 .ops = &ak4613_dai_ops,
798 .symmetric_rate = 1,
799};
800
801static int ak4613_suspend(struct snd_soc_component *component)
802{
803 struct regmap *regmap = dev_get_regmap(component->dev, NULL);
804
805 regcache_cache_only(regmap, true);
806 regcache_mark_dirty(regmap);
807 return 0;
808}
809
810static int ak4613_resume(struct snd_soc_component *component)
811{
812 struct regmap *regmap = dev_get_regmap(component->dev, NULL);
813
814 regcache_cache_only(regmap, false);
815 return regcache_sync(regmap);
816}
817
818static const struct snd_soc_component_driver soc_component_dev_ak4613 = {
819 .suspend = ak4613_suspend,
820 .resume = ak4613_resume,
821 .set_bias_level = ak4613_set_bias_level,
822 .controls = ak4613_snd_controls,
823 .num_controls = ARRAY_SIZE(ak4613_snd_controls),
824 .dapm_widgets = ak4613_dapm_widgets,
825 .num_dapm_widgets = ARRAY_SIZE(ak4613_dapm_widgets),
826 .dapm_routes = ak4613_intercon,
827 .num_dapm_routes = ARRAY_SIZE(ak4613_intercon),
828 .idle_bias_on = 1,
829 .endianness = 1,
830};
831
832static void ak4613_parse_of(struct ak4613_priv *priv,
833 struct device *dev)
834{
835 struct device_node *np = dev->of_node;
836 char prop[32];
837 int sdti_num;
838 int i;
839
840 /* Input 1 - 2 */
841 for (i = 0; i < 2; i++) {
842 snprintf(prop, sizeof(prop), "asahi-kasei,in%d-single-end", i + 1);
843 if (!of_property_read_bool(np, prop))
844 priv->ic |= 1 << i;
845 }
846
847 /* Output 1 - 6 */
848 for (i = 0; i < 6; i++) {
849 snprintf(prop, sizeof(prop), "asahi-kasei,out%d-single-end", i + 1);
850 if (!of_property_read_bool(np, prop))
851 priv->oc |= 1 << i;
852 }
853
854 /*
855 * enable TDM256 test
856 *
857 * !!! FIXME !!!
858 *
859 * It should be configured by DT or other way
860 * if it was full supported.
861 * But it is using ifdef style for now for test
862 * purpose.
863 */
864#if defined(AK4613_ENABLE_TDM_TEST)
865 AK4613_CONFIG_SET(priv, MODE_TDM256);
866#endif
867
868 /*
869 * connected STDI
870 * TDM support is assuming it is probed via Audio-Graph-Card style here.
871 * Default is SDTIx1 if it was probed via Simple-Audio-Card for now.
872 */
873 sdti_num = of_graph_get_endpoint_count(np);
874 if ((sdti_num >= SDTx_MAX) || (sdti_num < 1))
875 sdti_num = 1;
876
877 AK4613_CONFIG_SDTI_set(priv, sdti_num);
878}
879
880static int ak4613_i2c_probe(struct i2c_client *i2c)
881{
882 struct device *dev = &i2c->dev;
883 const struct regmap_config *regmap_cfg;
884 struct regmap *regmap;
885 struct ak4613_priv *priv;
886
887 regmap_cfg = i2c_get_match_data(i2c);
888 if (!regmap_cfg)
889 return -EINVAL;
890
891 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
892 if (!priv)
893 return -ENOMEM;
894
895 ak4613_parse_of(priv, dev);
896
897 priv->ctrl1 = 0;
898 priv->cnt = 0;
899 priv->sysclk = 0;
900 INIT_WORK(&priv->dummy_write_work, ak4613_dummy_write);
901
902 mutex_init(&priv->lock);
903
904 i2c_set_clientdata(i2c, priv);
905
906 regmap = devm_regmap_init_i2c(i2c, regmap_cfg);
907 if (IS_ERR(regmap))
908 return PTR_ERR(regmap);
909
910 return devm_snd_soc_register_component(dev, &soc_component_dev_ak4613,
911 &ak4613_dai, 1);
912}
913
914static struct i2c_driver ak4613_i2c_driver = {
915 .driver = {
916 .name = "ak4613-codec",
917 .of_match_table = ak4613_of_match,
918 },
919 .probe = ak4613_i2c_probe,
920 .id_table = ak4613_i2c_id,
921};
922
923module_i2c_driver(ak4613_i2c_driver);
924
925MODULE_DESCRIPTION("Soc AK4613 driver");
926MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
927MODULE_LICENSE("GPL v2");
1// SPDX-License-Identifier: GPL-2.0
2//
3// ak4613.c -- Asahi Kasei ALSA Soc Audio driver
4//
5// Copyright (C) 2015 Renesas Electronics Corporation
6// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
7//
8// Based on ak4642.c by Kuninori Morimoto
9// Based on wm8731.c by Richard Purdie
10// Based on ak4535.c by Richard Purdie
11// Based on wm8753.c by Liam Girdwood
12
13#include <linux/clk.h>
14#include <linux/delay.h>
15#include <linux/i2c.h>
16#include <linux/slab.h>
17#include <linux/of_device.h>
18#include <linux/module.h>
19#include <linux/regmap.h>
20#include <sound/soc.h>
21#include <sound/pcm_params.h>
22#include <sound/tlv.h>
23
24#define PW_MGMT1 0x00 /* Power Management 1 */
25#define PW_MGMT2 0x01 /* Power Management 2 */
26#define PW_MGMT3 0x02 /* Power Management 3 */
27#define CTRL1 0x03 /* Control 1 */
28#define CTRL2 0x04 /* Control 2 */
29#define DEMP1 0x05 /* De-emphasis1 */
30#define DEMP2 0x06 /* De-emphasis2 */
31#define OFD 0x07 /* Overflow Detect */
32#define ZRD 0x08 /* Zero Detect */
33#define ICTRL 0x09 /* Input Control */
34#define OCTRL 0x0a /* Output Control */
35#define LOUT1 0x0b /* LOUT1 Volume Control */
36#define ROUT1 0x0c /* ROUT1 Volume Control */
37#define LOUT2 0x0d /* LOUT2 Volume Control */
38#define ROUT2 0x0e /* ROUT2 Volume Control */
39#define LOUT3 0x0f /* LOUT3 Volume Control */
40#define ROUT3 0x10 /* ROUT3 Volume Control */
41#define LOUT4 0x11 /* LOUT4 Volume Control */
42#define ROUT4 0x12 /* ROUT4 Volume Control */
43#define LOUT5 0x13 /* LOUT5 Volume Control */
44#define ROUT5 0x14 /* ROUT5 Volume Control */
45#define LOUT6 0x15 /* LOUT6 Volume Control */
46#define ROUT6 0x16 /* ROUT6 Volume Control */
47
48/* PW_MGMT1 */
49#define RSTN BIT(0)
50#define PMDAC BIT(1)
51#define PMADC BIT(2)
52#define PMVR BIT(3)
53
54/* PW_MGMT2 */
55#define PMAD_ALL 0x7
56
57/* PW_MGMT3 */
58#define PMDA_ALL 0x3f
59
60/* CTRL1 */
61#define DIF0 BIT(3)
62#define DIF1 BIT(4)
63#define DIF2 BIT(5)
64#define TDM0 BIT(6)
65#define TDM1 BIT(7)
66#define NO_FMT (0xff)
67#define FMT_MASK (0xf8)
68
69/* CTRL2 */
70#define DFS_MASK (3 << 2)
71#define DFS_NORMAL_SPEED (0 << 2)
72#define DFS_DOUBLE_SPEED (1 << 2)
73#define DFS_QUAD_SPEED (2 << 2)
74
75/* ICTRL */
76#define ICTRL_MASK (0x3)
77
78/* OCTRL */
79#define OCTRL_MASK (0x3F)
80
81struct ak4613_formats {
82 unsigned int width;
83 unsigned int fmt;
84};
85
86struct ak4613_interface {
87 struct ak4613_formats capture;
88 struct ak4613_formats playback;
89};
90
91struct ak4613_priv {
92 struct mutex lock;
93 const struct ak4613_interface *iface;
94 struct snd_pcm_hw_constraint_list constraint;
95 struct work_struct dummy_write_work;
96 struct snd_soc_component *component;
97 unsigned int rate;
98 unsigned int sysclk;
99
100 unsigned int fmt;
101 u8 oc;
102 u8 ic;
103 int cnt;
104};
105
106/*
107 * Playback Volume
108 *
109 * max : 0x00 : 0 dB
110 * ( 0.5 dB step )
111 * min : 0xFE : -127.0 dB
112 * mute: 0xFF
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 /* capture */ /* playback */
144 /* [0] - [2] are not supported */
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 /* Outputs */
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 /* Inputs */
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 /* DAC */
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 /* ADC */
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_component *component = dai->component;
243 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
244 struct device *dev = component->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 * Slave Mode
280 * Normal: [32kHz, 48kHz] : 256fs,384fs or 512fs
281 * Double: [64kHz, 96kHz] : 256fs
282 * Quad : [128kHz,192kHz]: 128fs
283 *
284 * Master mode
285 * Normal: [32kHz, 48kHz] : 256fs or 512fs
286 * Double: [64kHz, 96kHz] : 256fs
287 * Quad : [128kHz,192kHz]: 128fs
288 */
289 for (i = 0; i < ARRAY_SIZE(ak4613_rates); i++) {
290 /* minimum fs on each range */
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_component *component = dai->component;
305 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
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_component *component = codec_dai->component;
318 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
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_component *component = dai->component;
328 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
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_component *component = dai->component;
366 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
367 const struct ak4613_interface *iface;
368 struct device *dev = component->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 priv->rate = rate;
396
397 /*
398 * FIXME
399 *
400 * It doesn't support TDM at this point
401 */
402 fmt_ctrl = NO_FMT;
403 ret = -EINVAL;
404 iface = NULL;
405
406 mutex_lock(&priv->lock);
407 if (priv->iface) {
408 if (ak4613_dai_fmt_matching(priv->iface, is_play, fmt, width))
409 iface = priv->iface;
410 } else {
411 for (i = ARRAY_SIZE(ak4613_iface) - 1; i >= 0; i--) {
412 if (!ak4613_dai_fmt_matching(ak4613_iface + i,
413 is_play,
414 fmt, width))
415 continue;
416 iface = ak4613_iface + i;
417 break;
418 }
419 }
420
421 if ((priv->iface == NULL) ||
422 (priv->iface == iface)) {
423 priv->iface = iface;
424 ret = 0;
425 }
426 mutex_unlock(&priv->lock);
427
428 if (ret < 0)
429 goto hw_params_end;
430
431 fmt_ctrl = AUDIO_IFACE_TO_VAL(iface);
432
433 snd_soc_component_update_bits(component, CTRL1, FMT_MASK, fmt_ctrl);
434 snd_soc_component_update_bits(component, CTRL2, DFS_MASK, ctrl2);
435
436 snd_soc_component_update_bits(component, ICTRL, ICTRL_MASK, priv->ic);
437 snd_soc_component_update_bits(component, OCTRL, OCTRL_MASK, priv->oc);
438
439hw_params_end:
440 if (ret < 0)
441 dev_warn(dev, "unsupported data width/format combination\n");
442
443 return ret;
444}
445
446static int ak4613_set_bias_level(struct snd_soc_component *component,
447 enum snd_soc_bias_level level)
448{
449 u8 mgmt1 = 0;
450
451 switch (level) {
452 case SND_SOC_BIAS_ON:
453 mgmt1 |= RSTN;
454 fallthrough;
455 case SND_SOC_BIAS_PREPARE:
456 mgmt1 |= PMADC | PMDAC;
457 fallthrough;
458 case SND_SOC_BIAS_STANDBY:
459 mgmt1 |= PMVR;
460 fallthrough;
461 case SND_SOC_BIAS_OFF:
462 default:
463 break;
464 }
465
466 snd_soc_component_write(component, PW_MGMT1, mgmt1);
467
468 return 0;
469}
470
471static void ak4613_dummy_write(struct work_struct *work)
472{
473 struct ak4613_priv *priv = container_of(work,
474 struct ak4613_priv,
475 dummy_write_work);
476 struct snd_soc_component *component = priv->component;
477 unsigned int mgmt1;
478 unsigned int mgmt3;
479
480 /*
481 * PW_MGMT1 / PW_MGMT3 needs dummy write at least after 5 LR clocks
482 *
483 * Note
484 *
485 * To avoid extra delay, we want to avoid preemption here,
486 * but we can't. Because it uses I2C access which is using IRQ
487 * and sleep. Thus, delay might be more than 5 LR clocks
488 * see also
489 * ak4613_dai_trigger()
490 */
491 udelay(5000000 / priv->rate);
492
493 mgmt1 = snd_soc_component_read(component, PW_MGMT1);
494 mgmt3 = snd_soc_component_read(component, PW_MGMT3);
495
496 snd_soc_component_write(component, PW_MGMT1, mgmt1);
497 snd_soc_component_write(component, PW_MGMT3, mgmt3);
498}
499
500static int ak4613_dai_trigger(struct snd_pcm_substream *substream, int cmd,
501 struct snd_soc_dai *dai)
502{
503 struct snd_soc_component *component = dai->component;
504 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
505
506 /*
507 * FIXME
508 *
509 * PW_MGMT1 / PW_MGMT3 needs dummy write at least after 5 LR clocks
510 * from Power Down Release. Otherwise, Playback volume will be 0dB.
511 * To avoid complex multiple delay/dummy_write method from
512 * ak4613_set_bias_level() / SND_SOC_DAPM_DAC_E("DACx", ...),
513 * call it once here.
514 *
515 * But, unfortunately, we can't "write" here because here is atomic
516 * context (It uses I2C access for writing).
517 * Thus, use schedule_work() to switching to normal context
518 * immediately.
519 *
520 * Note
521 *
522 * Calling ak4613_dummy_write() function might be delayed.
523 * In such case, ak4613 volume might be temporarily 0dB when
524 * beggining of playback.
525 * see also
526 * ak4613_dummy_write()
527 */
528
529 if ((cmd != SNDRV_PCM_TRIGGER_START) &&
530 (cmd != SNDRV_PCM_TRIGGER_RESUME))
531 return 0;
532
533 if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
534 return 0;
535
536 priv->component = component;
537 schedule_work(&priv->dummy_write_work);
538
539 return 0;
540}
541
542static const struct snd_soc_dai_ops ak4613_dai_ops = {
543 .startup = ak4613_dai_startup,
544 .shutdown = ak4613_dai_shutdown,
545 .set_sysclk = ak4613_dai_set_sysclk,
546 .set_fmt = ak4613_dai_set_fmt,
547 .trigger = ak4613_dai_trigger,
548 .hw_params = ak4613_dai_hw_params,
549};
550
551#define AK4613_PCM_RATE (SNDRV_PCM_RATE_32000 |\
552 SNDRV_PCM_RATE_44100 |\
553 SNDRV_PCM_RATE_48000 |\
554 SNDRV_PCM_RATE_64000 |\
555 SNDRV_PCM_RATE_88200 |\
556 SNDRV_PCM_RATE_96000 |\
557 SNDRV_PCM_RATE_176400 |\
558 SNDRV_PCM_RATE_192000)
559#define AK4613_PCM_FMTBIT (SNDRV_PCM_FMTBIT_S24_LE)
560
561static struct snd_soc_dai_driver ak4613_dai = {
562 .name = "ak4613-hifi",
563 .playback = {
564 .stream_name = "Playback",
565 .channels_min = 2,
566 .channels_max = 2,
567 .rates = AK4613_PCM_RATE,
568 .formats = AK4613_PCM_FMTBIT,
569 },
570 .capture = {
571 .stream_name = "Capture",
572 .channels_min = 2,
573 .channels_max = 2,
574 .rates = AK4613_PCM_RATE,
575 .formats = AK4613_PCM_FMTBIT,
576 },
577 .ops = &ak4613_dai_ops,
578 .symmetric_rates = 1,
579};
580
581static int ak4613_suspend(struct snd_soc_component *component)
582{
583 struct regmap *regmap = dev_get_regmap(component->dev, NULL);
584
585 regcache_cache_only(regmap, true);
586 regcache_mark_dirty(regmap);
587 return 0;
588}
589
590static int ak4613_resume(struct snd_soc_component *component)
591{
592 struct regmap *regmap = dev_get_regmap(component->dev, NULL);
593
594 regcache_cache_only(regmap, false);
595 return regcache_sync(regmap);
596}
597
598static const struct snd_soc_component_driver soc_component_dev_ak4613 = {
599 .suspend = ak4613_suspend,
600 .resume = ak4613_resume,
601 .set_bias_level = ak4613_set_bias_level,
602 .controls = ak4613_snd_controls,
603 .num_controls = ARRAY_SIZE(ak4613_snd_controls),
604 .dapm_widgets = ak4613_dapm_widgets,
605 .num_dapm_widgets = ARRAY_SIZE(ak4613_dapm_widgets),
606 .dapm_routes = ak4613_intercon,
607 .num_dapm_routes = ARRAY_SIZE(ak4613_intercon),
608 .idle_bias_on = 1,
609 .endianness = 1,
610 .non_legacy_dai_naming = 1,
611};
612
613static void ak4613_parse_of(struct ak4613_priv *priv,
614 struct device *dev)
615{
616 struct device_node *np = dev->of_node;
617 char prop[32];
618 int i;
619
620 /* Input 1 - 2 */
621 for (i = 0; i < 2; i++) {
622 snprintf(prop, sizeof(prop), "asahi-kasei,in%d-single-end", i + 1);
623 if (!of_get_property(np, prop, NULL))
624 priv->ic |= 1 << i;
625 }
626
627 /* Output 1 - 6 */
628 for (i = 0; i < 6; i++) {
629 snprintf(prop, sizeof(prop), "asahi-kasei,out%d-single-end", i + 1);
630 if (!of_get_property(np, prop, NULL))
631 priv->oc |= 1 << i;
632 }
633}
634
635static int ak4613_i2c_probe(struct i2c_client *i2c,
636 const struct i2c_device_id *id)
637{
638 struct device *dev = &i2c->dev;
639 struct device_node *np = dev->of_node;
640 const struct regmap_config *regmap_cfg;
641 struct regmap *regmap;
642 struct ak4613_priv *priv;
643
644 regmap_cfg = NULL;
645 if (np) {
646 const struct of_device_id *of_id;
647
648 of_id = of_match_device(ak4613_of_match, dev);
649 if (of_id)
650 regmap_cfg = of_id->data;
651 } else {
652 regmap_cfg = (const struct regmap_config *)id->driver_data;
653 }
654
655 if (!regmap_cfg)
656 return -EINVAL;
657
658 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
659 if (!priv)
660 return -ENOMEM;
661
662 ak4613_parse_of(priv, dev);
663
664 priv->iface = NULL;
665 priv->cnt = 0;
666 priv->sysclk = 0;
667 INIT_WORK(&priv->dummy_write_work, ak4613_dummy_write);
668
669 mutex_init(&priv->lock);
670
671 i2c_set_clientdata(i2c, priv);
672
673 regmap = devm_regmap_init_i2c(i2c, regmap_cfg);
674 if (IS_ERR(regmap))
675 return PTR_ERR(regmap);
676
677 return devm_snd_soc_register_component(dev, &soc_component_dev_ak4613,
678 &ak4613_dai, 1);
679}
680
681static int ak4613_i2c_remove(struct i2c_client *client)
682{
683 return 0;
684}
685
686static struct i2c_driver ak4613_i2c_driver = {
687 .driver = {
688 .name = "ak4613-codec",
689 .of_match_table = ak4613_of_match,
690 },
691 .probe = ak4613_i2c_probe,
692 .remove = ak4613_i2c_remove,
693 .id_table = ak4613_i2c_id,
694};
695
696module_i2c_driver(ak4613_i2c_driver);
697
698MODULE_DESCRIPTION("Soc AK4613 driver");
699MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
700MODULE_LICENSE("GPL v2");