1// SPDX-License-Identifier: GPL-2.0+
2// Copyright 2017-2021 NXP
3
4#include <linux/module.h>
5#include <linux/init.h>
6#include <linux/slab.h>
7#include <linux/gpio/consumer.h>
8#include <linux/of.h>
9#include <linux/i2c.h>
10#include <linux/clk.h>
11#include <sound/soc.h>
12#include <sound/pcm_params.h>
13#include <sound/pcm.h>
14#include <sound/soc-dapm.h>
15#include <sound/simple_card_utils.h>
16
17#include "fsl_sai.h"
18
19#define IMX_CARD_MCLK_22P5792MHZ 22579200
20#define IMX_CARD_MCLK_24P576MHZ 24576000
21
22enum codec_type {
23 CODEC_DUMMY = 0,
24 CODEC_AK5558 = 1,
25 CODEC_AK4458,
26 CODEC_AK4497,
27 CODEC_AK5552,
28 CODEC_CS42888,
29 CODEC_WM8524,
30};
31
32/*
33 * Mapping LRCK fs and frame width, table 3 & 4 in datasheet
34 * @rmin: min rate
35 * @rmax: max rate
36 * @wmin: min frame ratio
37 * @wmax: max frame ratio
38 */
39struct imx_akcodec_fs_mul {
40 unsigned int rmin;
41 unsigned int rmax;
42 unsigned int wmin;
43 unsigned int wmax;
44};
45
46/*
47 * Mapping TDM mode and frame width
48 */
49struct imx_akcodec_tdm_fs_mul {
50 unsigned int min;
51 unsigned int max;
52 unsigned int mul;
53};
54
55/*
56 * struct imx_card_plat_data - specific info for codecs
57 *
58 * @fs_mul: ratio of mclk/fs for normal mode
59 * @tdm_fs_mul: ratio of mclk/fs for tdm mode
60 * @support_rates: supported sample rate
61 * @support_tdm_rates: supported sample rate for tdm mode
62 * @support_channels: supported channels
63 * @support_tdm_channels: supported channels for tdm mode
64 * @num_fs_mul: ARRAY_SIZE of fs_mul
65 * @num_tdm_fs_mul: ARRAY_SIZE of tdm_fs_mul
66 * @num_rates: ARRAY_SIZE of support_rates
67 * @num_tdm_rates: ARRAY_SIZE of support_tdm_rates
68 * @num_channels: ARRAY_SIZE of support_channels
69 * @num_tdm_channels: ARRAY_SIZE of support_tdm_channels
70 * @type: codec type
71 */
72struct imx_card_plat_data {
73 struct imx_akcodec_fs_mul *fs_mul;
74 struct imx_akcodec_tdm_fs_mul *tdm_fs_mul;
75 const u32 *support_rates;
76 const u32 *support_tdm_rates;
77 const u32 *support_channels;
78 const u32 *support_tdm_channels;
79 unsigned int num_fs_mul;
80 unsigned int num_tdm_fs_mul;
81 unsigned int num_rates;
82 unsigned int num_tdm_rates;
83 unsigned int num_channels;
84 unsigned int num_tdm_channels;
85 unsigned int num_codecs;
86 enum codec_type type;
87};
88
89/*
90 * struct dai_link_data - specific info for dai link
91 *
92 * @slots: slot number
93 * @slot_width: slot width value
94 * @cpu_sysclk_id: sysclk id for cpu dai
95 * @one2one_ratio: true if mclk equal to bclk
96 */
97struct dai_link_data {
98 unsigned int slots;
99 unsigned int slot_width;
100 unsigned int cpu_sysclk_id;
101 bool one2one_ratio;
102};
103
104/*
105 * struct imx_card_data - platform device data
106 *
107 * @plat_data: pointer of imx_card_plat_data
108 * @dapm_routes: pointer of dapm_routes
109 * @link_data: private data for dai link
110 * @card: card instance
111 * @num_dapm_routes: number of dapm_routes
112 * @asrc_rate: asrc rates
113 * @asrc_format: asrc format
114 */
115struct imx_card_data {
116 struct imx_card_plat_data *plat_data;
117 struct snd_soc_dapm_route *dapm_routes;
118 struct dai_link_data *link_data;
119 struct snd_soc_card card;
120 int num_dapm_routes;
121 u32 asrc_rate;
122 snd_pcm_format_t asrc_format;
123};
124
125static struct imx_akcodec_fs_mul ak4458_fs_mul[] = {
126 /* Normal, < 32kHz */
127 { .rmin = 8000, .rmax = 24000, .wmin = 256, .wmax = 1024, },
128 /* Normal, 32kHz */
129 { .rmin = 32000, .rmax = 32000, .wmin = 256, .wmax = 1024, },
130 /* Normal */
131 { .rmin = 44100, .rmax = 48000, .wmin = 256, .wmax = 768, },
132 /* Double */
133 { .rmin = 88200, .rmax = 96000, .wmin = 256, .wmax = 512, },
134 /* Quad */
135 { .rmin = 176400, .rmax = 192000, .wmin = 128, .wmax = 256, },
136 /* Oct */
137 { .rmin = 352800, .rmax = 384000, .wmin = 32, .wmax = 128, },
138 /* Hex */
139 { .rmin = 705600, .rmax = 768000, .wmin = 16, .wmax = 64, },
140};
141
142static struct imx_akcodec_tdm_fs_mul ak4458_tdm_fs_mul[] = {
143 /*
144 * Table 13 - Audio Interface Format
145 * For TDM mode, MCLK should is set to
146 * obtained from 2 * slots * slot_width
147 */
148 { .min = 128, .max = 128, .mul = 256 }, /* TDM128 */
149 { .min = 256, .max = 256, .mul = 512 }, /* TDM256 */
150 { .min = 512, .max = 512, .mul = 1024 }, /* TDM512 */
151};
152
153static struct imx_akcodec_fs_mul ak4497_fs_mul[] = {
154 /**
155 * Table 7 - mapping multiplier and speed mode
156 * Tables 8 & 9 - mapping speed mode and LRCK fs
157 */
158 { .rmin = 8000, .rmax = 32000, .wmin = 256, .wmax = 1024, }, /* Normal, <= 32kHz */
159 { .rmin = 44100, .rmax = 48000, .wmin = 256, .wmax = 512, }, /* Normal */
160 { .rmin = 88200, .rmax = 96000, .wmin = 256, .wmax = 256, }, /* Double */
161 { .rmin = 176400, .rmax = 192000, .wmin = 128, .wmax = 128, }, /* Quad */
162 { .rmin = 352800, .rmax = 384000, .wmin = 128, .wmax = 128, }, /* Oct */
163 { .rmin = 705600, .rmax = 768000, .wmin = 64, .wmax = 64, }, /* Hex */
164};
165
166/*
167 * Auto MCLK selection based on LRCK for Normal Mode
168 * (Table 4 from datasheet)
169 */
170static struct imx_akcodec_fs_mul ak5558_fs_mul[] = {
171 { .rmin = 8000, .rmax = 32000, .wmin = 512, .wmax = 1024, },
172 { .rmin = 44100, .rmax = 48000, .wmin = 512, .wmax = 512, },
173 { .rmin = 88200, .rmax = 96000, .wmin = 256, .wmax = 256, },
174 { .rmin = 176400, .rmax = 192000, .wmin = 128, .wmax = 128, },
175 { .rmin = 352800, .rmax = 384000, .wmin = 64, .wmax = 64, },
176 { .rmin = 705600, .rmax = 768000, .wmin = 32, .wmax = 32, },
177};
178
179/*
180 * MCLK and BCLK selection based on TDM mode
181 * because of SAI we also add the restriction: MCLK >= 2 * BCLK
182 * (Table 9 from datasheet)
183 */
184static struct imx_akcodec_tdm_fs_mul ak5558_tdm_fs_mul[] = {
185 { .min = 128, .max = 128, .mul = 256 },
186 { .min = 256, .max = 256, .mul = 512 },
187 { .min = 512, .max = 512, .mul = 1024 },
188};
189
190static struct imx_akcodec_fs_mul cs42888_fs_mul[] = {
191 { .rmin = 8000, .rmax = 48000, .wmin = 256, .wmax = 1024, },
192 { .rmin = 64000, .rmax = 96000, .wmin = 128, .wmax = 512, },
193 { .rmin = 176400, .rmax = 192000, .wmin = 64, .wmax = 256, },
194};
195
196static struct imx_akcodec_tdm_fs_mul cs42888_tdm_fs_mul[] = {
197 { .min = 256, .max = 256, .mul = 256 },
198};
199
200static struct imx_akcodec_fs_mul wm8524_fs_mul[] = {
201 { .rmin = 8000, .rmax = 32000, .wmin = 256, .wmax = 1152, },
202 { .rmin = 44100, .rmax = 48000, .wmin = 256, .wmax = 768, },
203 { .rmin = 88200, .rmax = 96000, .wmin = 128, .wmax = 384, },
204 { .rmin = 176400, .rmax = 192000, .wmin = 128, .wmax = 192, },
205};
206
207static const u32 akcodec_rates[] = {
208 8000, 11025, 16000, 22050, 32000, 44100, 48000, 88200,
209 96000, 176400, 192000, 352800, 384000, 705600, 768000,
210};
211
212static const u32 akcodec_tdm_rates[] = {
213 8000, 16000, 32000, 48000, 96000,
214};
215
216static const u32 ak4458_channels[] = {
217 1, 2, 4, 6, 8, 10, 12, 14, 16,
218};
219
220static const u32 ak4458_tdm_channels[] = {
221 1, 2, 3, 4, 5, 6, 7, 8, 16,
222};
223
224static const u32 ak5558_channels[] = {
225 1, 2, 4, 6, 8,
226};
227
228static const u32 ak5558_tdm_channels[] = {
229 1, 2, 3, 4, 5, 6, 7, 8,
230};
231
232static const u32 cs42888_channels[] = {
233 1, 2, 4, 6, 8,
234};
235
236static const u32 cs42888_tdm_channels[] = {
237 1, 2, 3, 4, 5, 6, 7, 8,
238};
239
240static const u32 wm8524_channels[] = {
241 2,
242};
243
244static bool format_is_dsd(struct snd_pcm_hw_params *params)
245{
246 snd_pcm_format_t format = params_format(p: params);
247
248 switch (format) {
249 case SNDRV_PCM_FORMAT_DSD_U8:
250 case SNDRV_PCM_FORMAT_DSD_U16_LE:
251 case SNDRV_PCM_FORMAT_DSD_U16_BE:
252 case SNDRV_PCM_FORMAT_DSD_U32_LE:
253 case SNDRV_PCM_FORMAT_DSD_U32_BE:
254 return true;
255 default:
256 return false;
257 }
258}
259
260static bool format_is_tdm(struct dai_link_data *link_data)
261{
262 if (link_data->slots > 2)
263 return true;
264 else
265 return false;
266}
267
268static bool codec_is_akcodec(unsigned int type)
269{
270 switch (type) {
271 case CODEC_AK4458:
272 case CODEC_AK4497:
273 case CODEC_AK5558:
274 case CODEC_AK5552:
275 case CODEC_CS42888:
276 case CODEC_WM8524:
277 return true;
278 default:
279 break;
280 }
281 return false;
282}
283
284static unsigned long akcodec_get_mclk_rate(struct snd_pcm_substream *substream,
285 struct snd_pcm_hw_params *params,
286 int slots, int slot_width)
287{
288 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
289 struct imx_card_data *data = snd_soc_card_get_drvdata(card: rtd->card);
290 const struct imx_card_plat_data *plat_data = data->plat_data;
291 struct dai_link_data *link_data = &data->link_data[rtd->id];
292 unsigned int width = slots * slot_width;
293 unsigned int rate = params_rate(p: params);
294 int i;
295
296 if (format_is_tdm(link_data)) {
297 for (i = 0; i < plat_data->num_tdm_fs_mul; i++) {
298 /* min = max = slots * slots_width */
299 if (width != plat_data->tdm_fs_mul[i].min)
300 continue;
301 return rate * plat_data->tdm_fs_mul[i].mul;
302 }
303 } else {
304 for (i = 0; i < plat_data->num_fs_mul; i++) {
305 if (rate >= plat_data->fs_mul[i].rmin &&
306 rate <= plat_data->fs_mul[i].rmax) {
307 width = max(width, plat_data->fs_mul[i].wmin);
308 width = min(width, plat_data->fs_mul[i].wmax);
309
310 /* Adjust SAI bclk:mclk ratio */
311 width *= link_data->one2one_ratio ? 1 : 2;
312
313 return rate * width;
314 }
315 }
316 }
317
318 /* Let DAI manage clk frequency by default */
319 return 0;
320}
321
322static int imx_aif_hw_params(struct snd_pcm_substream *substream,
323 struct snd_pcm_hw_params *params)
324{
325 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
326 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
327 struct snd_soc_card *card = rtd->card;
328 struct imx_card_data *data = snd_soc_card_get_drvdata(card);
329 struct dai_link_data *link_data = &data->link_data[rtd->id];
330 struct imx_card_plat_data *plat_data = data->plat_data;
331 struct device *dev = card->dev;
332 struct snd_soc_dai *codec_dai;
333 unsigned long mclk_freq;
334 unsigned int fmt = rtd->dai_link->dai_fmt;
335 unsigned int slots, slot_width;
336 int ret, i;
337
338 slots = link_data->slots;
339 slot_width = link_data->slot_width;
340
341 if (!format_is_tdm(link_data)) {
342 if (format_is_dsd(params)) {
343 slots = 1;
344 slot_width = params_width(p: params);
345 fmt = (rtd->dai_link->dai_fmt & ~SND_SOC_DAIFMT_FORMAT_MASK) |
346 SND_SOC_DAIFMT_PDM;
347 } else {
348 slots = 2;
349 fmt = (rtd->dai_link->dai_fmt & ~SND_SOC_DAIFMT_FORMAT_MASK) |
350 SND_SOC_DAIFMT_I2S;
351 }
352 }
353
354 ret = snd_soc_dai_set_fmt(dai: cpu_dai, fmt: snd_soc_daifmt_clock_provider_flipped(dai_fmt: fmt));
355 if (ret && ret != -ENOTSUPP) {
356 dev_err(dev, "failed to set cpu dai fmt: %d\n", ret);
357 return ret;
358 }
359 ret = snd_soc_dai_set_tdm_slot(dai: cpu_dai,
360 BIT(slots) - 1,
361 BIT(slots) - 1,
362 slots, slot_width);
363 if (ret && ret != -ENOTSUPP) {
364 dev_err(dev, "failed to set cpu dai tdm slot: %d\n", ret);
365 return ret;
366 }
367
368 for_each_rtd_codec_dais(rtd, i, codec_dai) {
369 ret = snd_soc_dai_set_fmt(dai: codec_dai, fmt);
370 if (ret && ret != -ENOTSUPP) {
371 dev_err(dev, "failed to set codec dai[%d] fmt: %d\n", i, ret);
372 return ret;
373 }
374
375 if (format_is_tdm(link_data)) {
376 ret = snd_soc_dai_set_tdm_slot(dai: codec_dai,
377 BIT(slots) - 1,
378 BIT(slots) - 1,
379 slots, slot_width);
380 if (ret && ret != -ENOTSUPP) {
381 dev_err(dev, "failed to set codec dai[%d] tdm slot: %d\n", i, ret);
382 return ret;
383 }
384 }
385 }
386
387 /* Set MCLK freq */
388 if (codec_is_akcodec(type: plat_data->type))
389 mclk_freq = akcodec_get_mclk_rate(substream, params, slots, slot_width);
390 else
391 mclk_freq = params_rate(p: params) * slots * slot_width;
392
393 if (format_is_dsd(params)) {
394 /* Use the maximum freq from DSD512 (512*44100 = 22579200) */
395 if (!(params_rate(p: params) % 11025))
396 mclk_freq = IMX_CARD_MCLK_22P5792MHZ;
397 else
398 mclk_freq = IMX_CARD_MCLK_24P576MHZ;
399 }
400
401 ret = snd_soc_dai_set_sysclk(dai: cpu_dai, clk_id: link_data->cpu_sysclk_id, freq: mclk_freq,
402 SND_SOC_CLOCK_OUT);
403 if (ret && ret != -ENOTSUPP) {
404 dev_err(dev, "failed to set cpui dai mclk1 rate (%lu): %d\n", mclk_freq, ret);
405 return ret;
406 }
407 ret = snd_soc_dai_set_sysclk(dai: codec_dai, clk_id: 0, freq: mclk_freq, SND_SOC_CLOCK_IN);
408 if (ret && ret != -ENOTSUPP) {
409 dev_err(dev, "failed to set codec dai mclk rate (%lu): %d\n", mclk_freq, ret);
410 return ret;
411 }
412
413 return 0;
414}
415
416static int ak5558_hw_rule_rate(struct snd_pcm_hw_params *p, struct snd_pcm_hw_rule *r)
417{
418 struct dai_link_data *link_data = r->private;
419 struct snd_interval t = { .min = 8000, .max = 8000, };
420 unsigned long mclk_freq;
421 unsigned int fs;
422 int i;
423
424 fs = hw_param_interval(params: p, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)->min;
425 fs *= link_data->slots;
426
427 /* Identify maximum supported rate */
428 for (i = 0; i < ARRAY_SIZE(akcodec_rates); i++) {
429 mclk_freq = fs * akcodec_rates[i];
430 /* Adjust SAI bclk:mclk ratio */
431 mclk_freq *= link_data->one2one_ratio ? 1 : 2;
432
433 /* Skip rates for which MCLK is beyond supported value */
434 if (mclk_freq > 36864000)
435 continue;
436
437 if (t.max < akcodec_rates[i])
438 t.max = akcodec_rates[i];
439 }
440
441 return snd_interval_refine(i: hw_param_interval(params: p, var: r->var), v: &t);
442}
443
444static int imx_aif_startup(struct snd_pcm_substream *substream)
445{
446 struct snd_pcm_runtime *runtime = substream->runtime;
447 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
448 struct snd_soc_card *card = rtd->card;
449 struct imx_card_data *data = snd_soc_card_get_drvdata(card);
450 struct dai_link_data *link_data = &data->link_data[rtd->id];
451 static struct snd_pcm_hw_constraint_list constraint_rates;
452 static struct snd_pcm_hw_constraint_list constraint_channels;
453 int ret = 0;
454
455 if (format_is_tdm(link_data)) {
456 constraint_channels.list = data->plat_data->support_tdm_channels;
457 constraint_channels.count = data->plat_data->num_tdm_channels;
458 constraint_rates.list = data->plat_data->support_tdm_rates;
459 constraint_rates.count = data->plat_data->num_tdm_rates;
460 } else {
461 constraint_channels.list = data->plat_data->support_channels;
462 constraint_channels.count = data->plat_data->num_channels;
463 constraint_rates.list = data->plat_data->support_rates;
464 constraint_rates.count = data->plat_data->num_rates;
465 }
466
467 if (constraint_channels.count) {
468 ret = snd_pcm_hw_constraint_list(runtime, cond: 0,
469 SNDRV_PCM_HW_PARAM_CHANNELS,
470 l: &constraint_channels);
471 if (ret)
472 return ret;
473 }
474
475 if (constraint_rates.count) {
476 ret = snd_pcm_hw_constraint_list(runtime, cond: 0,
477 SNDRV_PCM_HW_PARAM_RATE,
478 l: &constraint_rates);
479 if (ret)
480 return ret;
481 }
482
483 if (data->plat_data->type == CODEC_AK5558)
484 ret = snd_pcm_hw_rule_add(runtime: substream->runtime, cond: 0,
485 SNDRV_PCM_HW_PARAM_RATE,
486 func: ak5558_hw_rule_rate, private: link_data,
487 SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1);
488
489 return ret;
490}
491
492static void imx_aif_shutdown(struct snd_pcm_substream *substream)
493{
494 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
495 struct snd_soc_dai *cpu_dai;
496 struct snd_soc_dai *codec_dai;
497 int i;
498
499 for_each_rtd_cpu_dais(rtd, i, cpu_dai)
500 snd_soc_dai_set_sysclk(dai: cpu_dai, clk_id: 0, freq: 0, SND_SOC_CLOCK_OUT);
501
502 for_each_rtd_codec_dais(rtd, i, codec_dai)
503 snd_soc_dai_set_sysclk(dai: codec_dai, clk_id: 0, freq: 0, SND_SOC_CLOCK_IN);
504}
505
506static const struct snd_soc_ops imx_aif_ops = {
507 .hw_params = imx_aif_hw_params,
508 .startup = imx_aif_startup,
509 .shutdown = imx_aif_shutdown,
510};
511
512static const struct snd_soc_ops imx_aif_ops_be = {
513 .hw_params = imx_aif_hw_params,
514};
515
516static int be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
517 struct snd_pcm_hw_params *params)
518{
519 struct snd_soc_card *card = rtd->card;
520 struct imx_card_data *data = snd_soc_card_get_drvdata(card);
521 struct snd_interval *rate;
522 struct snd_mask *mask;
523
524 rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
525 rate->max = data->asrc_rate;
526 rate->min = data->asrc_rate;
527
528 mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
529 snd_mask_none(mask);
530 snd_mask_set(mask, val: (__force unsigned int)data->asrc_format);
531
532 return 0;
533}
534
535static int imx_card_parse_of(struct imx_card_data *data)
536{
537 struct imx_card_plat_data *plat_data = data->plat_data;
538 struct snd_soc_card *card = &data->card;
539 struct snd_soc_dai_link_component *dlc;
540 struct device_node *platform = NULL;
541 struct device_node *codec = NULL;
542 struct device_node *cpu = NULL;
543 struct device *dev = card->dev;
544 struct snd_soc_dai_link *link;
545 struct dai_link_data *link_data;
546 struct of_phandle_args args;
547 bool playback_only, capture_only;
548 int ret, num_links;
549 u32 asrc_fmt = 0;
550 u32 width;
551
552 ret = snd_soc_of_parse_card_name(card, propname: "model");
553 if (ret) {
554 dev_err(dev, "Error parsing card name: %d\n", ret);
555 return ret;
556 }
557
558 /* DAPM routes */
559 if (of_property_present(np: dev->of_node, propname: "audio-routing")) {
560 ret = snd_soc_of_parse_audio_routing(card, propname: "audio-routing");
561 if (ret)
562 return ret;
563 }
564
565 /* Populate links */
566 num_links = of_get_child_count(np: dev->of_node);
567
568 /* Allocate the DAI link array */
569 card->dai_link = devm_kcalloc(dev, n: num_links, size: sizeof(*link), GFP_KERNEL);
570 if (!card->dai_link)
571 return -ENOMEM;
572
573 data->link_data = devm_kcalloc(dev, n: num_links, size: sizeof(*link_data), GFP_KERNEL);
574 if (!data->link_data)
575 return -ENOMEM;
576
577 card->num_links = num_links;
578 link = card->dai_link;
579 link_data = data->link_data;
580
581 for_each_child_of_node_scoped(dev->of_node, np) {
582 dlc = devm_kzalloc(dev, size: 2 * sizeof(*dlc), GFP_KERNEL);
583 if (!dlc) {
584 return -ENOMEM;
585 }
586
587 link->cpus = &dlc[0];
588 link->platforms = &dlc[1];
589
590 link->num_cpus = 1;
591 link->num_platforms = 1;
592
593 ret = of_property_read_string(np, propname: "link-name", out_string: &link->name);
594 if (ret) {
595 return dev_err_probe(dev: card->dev, err: ret,
596 fmt: "error getting codec dai_link name\n");
597 }
598
599 cpu = of_get_child_by_name(node: np, name: "cpu");
600 if (!cpu) {
601 dev_err(dev, "%s: Can't find cpu DT node\n", link->name);
602 ret = -EINVAL;
603 goto err;
604 }
605
606 ret = snd_soc_of_get_dlc(of_node: cpu, args: &args, dlc: link->cpus, index: 0);
607 if (ret) {
608 dev_err_probe(dev: card->dev, err: ret,
609 fmt: "%s: error getting cpu dai info\n", link->name);
610 goto err;
611 }
612
613 if (of_node_name_eq(np: args.np, name: "sai")) {
614 /* sai sysclk id */
615 link_data->cpu_sysclk_id = FSL_SAI_CLK_MAST1;
616
617 /* sai may support mclk/bclk = 1 */
618 if (of_property_read_bool(np, propname: "fsl,mclk-equal-bclk")) {
619 link_data->one2one_ratio = true;
620 } else {
621 int i;
622
623 /*
624 * i.MX8MQ don't support one2one ratio, then
625 * with ak4497 only 16bit case is supported.
626 */
627 for (i = 0; i < ARRAY_SIZE(ak4497_fs_mul); i++) {
628 if (ak4497_fs_mul[i].rmin == 705600 &&
629 ak4497_fs_mul[i].rmax == 768000) {
630 ak4497_fs_mul[i].wmin = 32;
631 ak4497_fs_mul[i].wmax = 32;
632 }
633 }
634 }
635 }
636
637 link->platforms->of_node = link->cpus->of_node;
638 link->id = args.args[0];
639
640 codec = of_get_child_by_name(node: np, name: "codec");
641 if (codec) {
642 ret = snd_soc_of_get_dai_link_codecs(dev, of_node: codec, dai_link: link);
643 if (ret < 0) {
644 dev_err_probe(dev, err: ret, fmt: "%s: codec dai not found\n",
645 link->name);
646 goto err;
647 }
648
649 plat_data->num_codecs = link->num_codecs;
650
651 /* Check the akcodec type */
652 if (!strcmp(link->codecs->dai_name, "ak4458-aif"))
653 plat_data->type = CODEC_AK4458;
654 else if (!strcmp(link->codecs->dai_name, "ak4497-aif"))
655 plat_data->type = CODEC_AK4497;
656 else if (!strcmp(link->codecs->dai_name, "ak5558-aif"))
657 plat_data->type = CODEC_AK5558;
658 else if (!strcmp(link->codecs->dai_name, "ak5552-aif"))
659 plat_data->type = CODEC_AK5552;
660 else if (!strcmp(link->codecs->dai_name, "cs42888"))
661 plat_data->type = CODEC_CS42888;
662 else if (!strcmp(link->codecs->dai_name, "wm8524-hifi"))
663 plat_data->type = CODEC_WM8524;
664
665 } else {
666 link->codecs = &snd_soc_dummy_dlc;
667 link->num_codecs = 1;
668 }
669
670 if (!strncmp(link->name, "HiFi-ASRC-FE", 12)) {
671 /* DPCM frontend */
672 link->dynamic = 1;
673 link->dpcm_merged_chan = 1;
674
675 ret = of_property_read_u32(np: args.np, propname: "fsl,asrc-rate", out_value: &data->asrc_rate);
676 if (ret) {
677 dev_err(dev, "failed to get output rate\n");
678 ret = -EINVAL;
679 goto err;
680 }
681
682 ret = of_property_read_u32(np: args.np, propname: "fsl,asrc-format", out_value: &asrc_fmt);
683 data->asrc_format = (__force snd_pcm_format_t)asrc_fmt;
684 if (ret) {
685 /* Fallback to old binding; translate to asrc_format */
686 ret = of_property_read_u32(np: args.np, propname: "fsl,asrc-width", out_value: &width);
687 if (ret) {
688 dev_err(dev,
689 "failed to decide output format\n");
690 goto err;
691 }
692
693 if (width == 24)
694 data->asrc_format = SNDRV_PCM_FORMAT_S24_LE;
695 else
696 data->asrc_format = SNDRV_PCM_FORMAT_S16_LE;
697 }
698 } else if (!strncmp(link->name, "HiFi-ASRC-BE", 12)) {
699 /* DPCM backend */
700 /*
701 * No need to have link->platforms. alloced dlc[1] will be just wasted,
702 * but it won't leak.
703 */
704 link->no_pcm = 1;
705 link->platforms = NULL;
706
707 link->be_hw_params_fixup = be_hw_params_fixup;
708 link->ops = &imx_aif_ops_be;
709 } else {
710 link->ops = &imx_aif_ops;
711 }
712
713 graph_util_parse_link_direction(np, is_playback_only: &playback_only, is_capture_only: &capture_only);
714 link->playback_only = playback_only;
715 link->capture_only = capture_only;
716
717 /* Get dai fmt */
718 ret = simple_util_parse_daifmt(dev, node: np, codec,
719 NULL, retfmt: &link->dai_fmt);
720 if (ret)
721 link->dai_fmt = SND_SOC_DAIFMT_NB_NF |
722 SND_SOC_DAIFMT_CBC_CFC |
723 SND_SOC_DAIFMT_I2S;
724
725 /* Get tdm slot */
726 snd_soc_of_parse_tdm_slot(np, NULL, NULL,
727 slots: &link_data->slots,
728 slot_width: &link_data->slot_width);
729 /* default value */
730 if (!link_data->slots)
731 link_data->slots = 2;
732
733 if (!link_data->slot_width)
734 link_data->slot_width = 32;
735
736 link->ignore_pmdown_time = 1;
737 link->stream_name = link->name;
738 link++;
739 link_data++;
740
741 of_node_put(node: cpu);
742 of_node_put(node: codec);
743 of_node_put(node: platform);
744
745 cpu = NULL;
746 codec = NULL;
747 platform = NULL;
748 }
749
750 return 0;
751err:
752 of_node_put(node: cpu);
753 of_node_put(node: codec);
754 of_node_put(node: platform);
755
756 return ret;
757}
758
759static int imx_card_probe(struct platform_device *pdev)
760{
761 struct snd_soc_dai_link *link_be = NULL, *link;
762 struct imx_card_plat_data *plat_data;
763 struct imx_card_data *data;
764 int ret, i;
765
766 data = devm_kzalloc(dev: &pdev->dev, size: sizeof(*data), GFP_KERNEL);
767 if (!data)
768 return -ENOMEM;
769
770 plat_data = devm_kzalloc(dev: &pdev->dev, size: sizeof(*plat_data), GFP_KERNEL);
771 if (!plat_data)
772 return -ENOMEM;
773
774 data->plat_data = plat_data;
775 data->card.dev = &pdev->dev;
776 data->card.owner = THIS_MODULE;
777
778 dev_set_drvdata(dev: &pdev->dev, data: &data->card);
779 snd_soc_card_set_drvdata(card: &data->card, data);
780 ret = imx_card_parse_of(data);
781 if (ret)
782 return ret;
783
784 data->num_dapm_routes = plat_data->num_codecs + 1;
785 data->dapm_routes = devm_kcalloc(dev: &pdev->dev, n: data->num_dapm_routes,
786 size: sizeof(struct snd_soc_dapm_route),
787 GFP_KERNEL);
788 if (!data->dapm_routes)
789 return -ENOMEM;
790
791 /* configure the dapm routes */
792 switch (plat_data->type) {
793 case CODEC_AK4458:
794 case CODEC_AK4497:
795 if (plat_data->num_codecs == 1) {
796 data->dapm_routes[0].sink = "Playback";
797 data->dapm_routes[0].source = "CPU-Playback";
798 i = 1;
799 } else {
800 for (i = 0; i < plat_data->num_codecs; i++) {
801 data->dapm_routes[i].sink =
802 devm_kasprintf(dev: &pdev->dev, GFP_KERNEL, fmt: "%d %s",
803 i + 1, "Playback");
804 if (!data->dapm_routes[i].sink)
805 return -ENOMEM;
806 data->dapm_routes[i].source = "CPU-Playback";
807 }
808 }
809 data->dapm_routes[i].sink = "CPU-Playback";
810 data->dapm_routes[i].source = "ASRC-Playback";
811 break;
812 case CODEC_AK5558:
813 case CODEC_AK5552:
814 if (plat_data->num_codecs == 1) {
815 data->dapm_routes[0].sink = "CPU-Capture";
816 data->dapm_routes[0].source = "Capture";
817 i = 1;
818 } else {
819 for (i = 0; i < plat_data->num_codecs; i++) {
820 data->dapm_routes[i].source =
821 devm_kasprintf(dev: &pdev->dev, GFP_KERNEL, fmt: "%d %s",
822 i + 1, "Capture");
823 if (!data->dapm_routes[i].source)
824 return -ENOMEM;
825 data->dapm_routes[i].sink = "CPU-Capture";
826 }
827 }
828 data->dapm_routes[i].sink = "ASRC-Capture";
829 data->dapm_routes[i].source = "CPU-Capture";
830 break;
831 case CODEC_CS42888:
832 data->dapm_routes[0].sink = "Playback";
833 data->dapm_routes[0].source = "CPU-Playback";
834 data->dapm_routes[1].sink = "CPU-Capture";
835 data->dapm_routes[1].source = "Capture";
836 break;
837 case CODEC_WM8524:
838 data->dapm_routes[0].sink = "Playback";
839 data->dapm_routes[0].source = "CPU-Playback";
840 break;
841 default:
842 break;
843 }
844
845 /* default platform data for akcodecs */
846 if (codec_is_akcodec(type: plat_data->type)) {
847 plat_data->support_rates = akcodec_rates;
848 plat_data->num_rates = ARRAY_SIZE(akcodec_rates);
849 plat_data->support_tdm_rates = akcodec_tdm_rates;
850 plat_data->num_tdm_rates = ARRAY_SIZE(akcodec_tdm_rates);
851
852 switch (plat_data->type) {
853 case CODEC_AK4458:
854 plat_data->fs_mul = ak4458_fs_mul;
855 plat_data->num_fs_mul = ARRAY_SIZE(ak4458_fs_mul);
856 plat_data->tdm_fs_mul = ak4458_tdm_fs_mul;
857 plat_data->num_tdm_fs_mul = ARRAY_SIZE(ak4458_tdm_fs_mul);
858 plat_data->support_channels = ak4458_channels;
859 plat_data->num_channels = ARRAY_SIZE(ak4458_channels);
860 plat_data->support_tdm_channels = ak4458_tdm_channels;
861 plat_data->num_tdm_channels = ARRAY_SIZE(ak4458_tdm_channels);
862 break;
863 case CODEC_AK4497:
864 plat_data->fs_mul = ak4497_fs_mul;
865 plat_data->num_fs_mul = ARRAY_SIZE(ak4497_fs_mul);
866 plat_data->support_channels = ak4458_channels;
867 plat_data->num_channels = ARRAY_SIZE(ak4458_channels);
868 break;
869 case CODEC_AK5558:
870 case CODEC_AK5552:
871 plat_data->fs_mul = ak5558_fs_mul;
872 plat_data->num_fs_mul = ARRAY_SIZE(ak5558_fs_mul);
873 plat_data->tdm_fs_mul = ak5558_tdm_fs_mul;
874 plat_data->num_tdm_fs_mul = ARRAY_SIZE(ak5558_tdm_fs_mul);
875 plat_data->support_channels = ak5558_channels;
876 plat_data->num_channels = ARRAY_SIZE(ak5558_channels);
877 plat_data->support_tdm_channels = ak5558_tdm_channels;
878 plat_data->num_tdm_channels = ARRAY_SIZE(ak5558_tdm_channels);
879 break;
880 case CODEC_CS42888:
881 plat_data->fs_mul = cs42888_fs_mul;
882 plat_data->num_fs_mul = ARRAY_SIZE(cs42888_fs_mul);
883 plat_data->tdm_fs_mul = cs42888_tdm_fs_mul;
884 plat_data->num_tdm_fs_mul = ARRAY_SIZE(cs42888_tdm_fs_mul);
885 plat_data->support_channels = cs42888_channels;
886 plat_data->num_channels = ARRAY_SIZE(cs42888_channels);
887 plat_data->support_tdm_channels = cs42888_tdm_channels;
888 plat_data->num_tdm_channels = ARRAY_SIZE(cs42888_tdm_channels);
889 break;
890 case CODEC_WM8524:
891 plat_data->fs_mul = wm8524_fs_mul;
892 plat_data->num_fs_mul = ARRAY_SIZE(wm8524_fs_mul);
893 plat_data->support_channels = wm8524_channels;
894 plat_data->num_channels = ARRAY_SIZE(wm8524_channels);
895 break;
896 default:
897 break;
898 }
899 }
900
901 /* with asrc as front end */
902 if (data->card.num_links == 3) {
903 data->card.dapm_routes = data->dapm_routes;
904 data->card.num_dapm_routes = data->num_dapm_routes;
905 for_each_card_prelinks(&data->card, i, link) {
906 if (link->no_pcm == 1)
907 link_be = link;
908 }
909 for_each_card_prelinks(&data->card, i, link) {
910 if (link->dynamic == 1 && link_be) {
911 link->playback_only = link_be->playback_only;
912 link->capture_only = link_be->capture_only;
913 }
914 }
915 }
916
917 ret = devm_snd_soc_register_card(dev: &pdev->dev, card: &data->card);
918 if (ret)
919 return dev_err_probe(dev: &pdev->dev, err: ret, fmt: "snd_soc_register_card failed\n");
920
921 return 0;
922}
923
924static const struct of_device_id imx_card_dt_ids[] = {
925 { .compatible = "fsl,imx-audio-card", },
926 { },
927};
928MODULE_DEVICE_TABLE(of, imx_card_dt_ids);
929
930static struct platform_driver imx_card_driver = {
931 .driver = {
932 .name = "imx-card",
933 .pm = &snd_soc_pm_ops,
934 .of_match_table = imx_card_dt_ids,
935 },
936 .probe = imx_card_probe,
937};
938module_platform_driver(imx_card_driver);
939
940MODULE_DESCRIPTION("Freescale i.MX ASoC Machine Driver");
941MODULE_LICENSE("GPL v2");
942MODULE_ALIAS("platform:imx-card");
943

source code of linux/sound/soc/fsl/imx-card.c