1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
2 //
3 // This file is provided under a dual BSD/GPLv2 license. When using or
4 // redistributing this file, you may do so under either license.
5 //
6 // Copyright(c) 2018 Intel Corporation. All rights reserved.
7 //
8 // Authors: Keyon Jie <yang.jie@linux.intel.com>
9 //
10
11 #include <sound/pcm_params.h>
12 #include <sound/hdaudio_ext.h>
13 #include "../sof-priv.h"
14 #include "../sof-audio.h"
15 #include "hda.h"
16
17 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
18
19 struct hda_pipe_params {
20 u8 host_dma_id;
21 u8 link_dma_id;
22 u32 ch;
23 u32 s_freq;
24 u32 s_fmt;
25 u8 linktype;
26 snd_pcm_format_t format;
27 int link_index;
28 int stream;
29 unsigned int host_bps;
30 unsigned int link_bps;
31 };
32
33 /*
34 * This function checks if the host dma channel corresponding
35 * to the link DMA stream_tag argument is assigned to one
36 * of the FEs connected to the BE DAI.
37 */
hda_check_fes(struct snd_soc_pcm_runtime * rtd,int dir,int stream_tag)38 static bool hda_check_fes(struct snd_soc_pcm_runtime *rtd,
39 int dir, int stream_tag)
40 {
41 struct snd_pcm_substream *fe_substream;
42 struct hdac_stream *fe_hstream;
43 struct snd_soc_dpcm *dpcm;
44
45 for_each_dpcm_fe(rtd, dir, dpcm) {
46 fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, dir);
47 fe_hstream = fe_substream->runtime->private_data;
48 if (fe_hstream->stream_tag == stream_tag)
49 return true;
50 }
51
52 return false;
53 }
54
55 static struct hdac_ext_stream *
hda_link_stream_assign(struct hdac_bus * bus,struct snd_pcm_substream * substream)56 hda_link_stream_assign(struct hdac_bus *bus,
57 struct snd_pcm_substream *substream)
58 {
59 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
60 struct sof_intel_hda_stream *hda_stream;
61 struct hdac_ext_stream *res = NULL;
62 struct hdac_stream *stream = NULL;
63
64 int stream_dir = substream->stream;
65
66 if (!bus->ppcap) {
67 dev_err(bus->dev, "stream type not supported\n");
68 return NULL;
69 }
70
71 spin_lock_irq(&bus->reg_lock);
72 list_for_each_entry(stream, &bus->stream_list, list) {
73 struct hdac_ext_stream *hstream =
74 stream_to_hdac_ext_stream(stream);
75 if (stream->direction != substream->stream)
76 continue;
77
78 hda_stream = hstream_to_sof_hda_stream(hstream);
79
80 /* check if link is available */
81 if (!hstream->link_locked) {
82 if (stream->opened) {
83 /*
84 * check if the stream tag matches the stream
85 * tag of one of the connected FEs
86 */
87 if (hda_check_fes(rtd, stream_dir,
88 stream->stream_tag)) {
89 res = hstream;
90 break;
91 }
92 } else {
93 res = hstream;
94
95 /*
96 * This must be a hostless stream.
97 * So reserve the host DMA channel.
98 */
99 hda_stream->host_reserved = 1;
100 break;
101 }
102 }
103 }
104
105 if (res) {
106 /*
107 * Decouple host and link DMA. The decoupled flag
108 * is updated in snd_hdac_ext_stream_decouple().
109 */
110 if (!res->decoupled)
111 snd_hdac_ext_stream_decouple_locked(bus, res, true);
112
113 res->link_locked = 1;
114 res->link_substream = substream;
115 }
116 spin_unlock_irq(&bus->reg_lock);
117
118 return res;
119 }
120
hda_link_dma_params(struct hdac_ext_stream * stream,struct hda_pipe_params * params)121 static int hda_link_dma_params(struct hdac_ext_stream *stream,
122 struct hda_pipe_params *params)
123 {
124 struct hdac_stream *hstream = &stream->hstream;
125 unsigned char stream_tag = hstream->stream_tag;
126 struct hdac_bus *bus = hstream->bus;
127 struct hdac_ext_link *link;
128 unsigned int format_val;
129
130 snd_hdac_ext_stream_decouple(bus, stream, true);
131 snd_hdac_ext_link_stream_reset(stream);
132
133 format_val = snd_hdac_calc_stream_format(params->s_freq, params->ch,
134 params->format,
135 params->link_bps, 0);
136
137 dev_dbg(bus->dev, "format_val=%d, rate=%d, ch=%d, format=%d\n",
138 format_val, params->s_freq, params->ch, params->format);
139
140 snd_hdac_ext_link_stream_setup(stream, format_val);
141
142 if (stream->hstream.direction == SNDRV_PCM_STREAM_PLAYBACK) {
143 list_for_each_entry(link, &bus->hlink_list, list) {
144 if (link->index == params->link_index)
145 snd_hdac_ext_link_set_stream_id(link,
146 stream_tag);
147 }
148 }
149
150 stream->link_prepared = 1;
151
152 return 0;
153 }
154
155 /* Send DAI_CONFIG IPC to the DAI that matches the dai_name and direction */
hda_link_config_ipc(struct sof_intel_hda_stream * hda_stream,const char * dai_name,int channel,int dir)156 static int hda_link_config_ipc(struct sof_intel_hda_stream *hda_stream,
157 const char *dai_name, int channel, int dir)
158 {
159 struct sof_ipc_dai_config *config;
160 struct snd_sof_dai *sof_dai;
161 struct sof_ipc_reply reply;
162 int ret = 0;
163
164 list_for_each_entry(sof_dai, &hda_stream->sdev->dai_list, list) {
165 if (!sof_dai->cpu_dai_name)
166 continue;
167
168 if (!strcmp(dai_name, sof_dai->cpu_dai_name) &&
169 dir == sof_dai->comp_dai.direction) {
170 config = sof_dai->dai_config;
171
172 if (!config) {
173 dev_err(hda_stream->sdev->dev,
174 "error: no config for DAI %s\n",
175 sof_dai->name);
176 return -EINVAL;
177 }
178
179 /* update config with stream tag */
180 config->hda.link_dma_ch = channel;
181
182 /* send IPC */
183 ret = sof_ipc_tx_message(hda_stream->sdev->ipc,
184 config->hdr.cmd,
185 config,
186 config->hdr.size,
187 &reply, sizeof(reply));
188
189 if (ret < 0)
190 dev_err(hda_stream->sdev->dev,
191 "error: failed to set dai config for %s\n",
192 sof_dai->name);
193 return ret;
194 }
195 }
196
197 return -EINVAL;
198 }
199
hda_link_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)200 static int hda_link_hw_params(struct snd_pcm_substream *substream,
201 struct snd_pcm_hw_params *params,
202 struct snd_soc_dai *dai)
203 {
204 struct hdac_stream *hstream = substream->runtime->private_data;
205 struct hdac_bus *bus = hstream->bus;
206 struct hdac_ext_stream *link_dev;
207 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
208 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
209 struct sof_intel_hda_stream *hda_stream;
210 struct hda_pipe_params p_params = {0};
211 struct hdac_ext_link *link;
212 int stream_tag;
213 int ret;
214
215 link = snd_hdac_ext_bus_get_link(bus, codec_dai->component->name);
216 if (!link)
217 return -EINVAL;
218
219 /* get stored dma data if resuming from system suspend */
220 link_dev = snd_soc_dai_get_dma_data(dai, substream);
221 if (!link_dev) {
222 link_dev = hda_link_stream_assign(bus, substream);
223 if (!link_dev)
224 return -EBUSY;
225
226 snd_soc_dai_set_dma_data(dai, substream, (void *)link_dev);
227 }
228
229 stream_tag = hdac_stream(link_dev)->stream_tag;
230
231 hda_stream = hstream_to_sof_hda_stream(link_dev);
232
233 /* update the DSP with the new tag */
234 ret = hda_link_config_ipc(hda_stream, dai->name, stream_tag - 1,
235 substream->stream);
236 if (ret < 0)
237 return ret;
238
239 /* set the stream tag in the codec dai dma params */
240 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
241 snd_soc_dai_set_tdm_slot(codec_dai, stream_tag, 0, 0, 0);
242 else
243 snd_soc_dai_set_tdm_slot(codec_dai, 0, stream_tag, 0, 0);
244
245 p_params.s_fmt = snd_pcm_format_width(params_format(params));
246 p_params.ch = params_channels(params);
247 p_params.s_freq = params_rate(params);
248 p_params.stream = substream->stream;
249 p_params.link_dma_id = stream_tag - 1;
250 p_params.link_index = link->index;
251 p_params.format = params_format(params);
252
253 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
254 p_params.link_bps = codec_dai->driver->playback.sig_bits;
255 else
256 p_params.link_bps = codec_dai->driver->capture.sig_bits;
257
258 return hda_link_dma_params(link_dev, &p_params);
259 }
260
hda_link_pcm_prepare(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)261 static int hda_link_pcm_prepare(struct snd_pcm_substream *substream,
262 struct snd_soc_dai *dai)
263 {
264 struct hdac_ext_stream *link_dev =
265 snd_soc_dai_get_dma_data(dai, substream);
266 struct snd_sof_dev *sdev =
267 snd_soc_component_get_drvdata(dai->component);
268 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
269 int stream = substream->stream;
270
271 if (link_dev->link_prepared)
272 return 0;
273
274 dev_dbg(sdev->dev, "hda: prepare stream dir %d\n", substream->stream);
275
276 return hda_link_hw_params(substream, &rtd->dpcm[stream].hw_params,
277 dai);
278 }
279
hda_link_pcm_trigger(struct snd_pcm_substream * substream,int cmd,struct snd_soc_dai * dai)280 static int hda_link_pcm_trigger(struct snd_pcm_substream *substream,
281 int cmd, struct snd_soc_dai *dai)
282 {
283 struct hdac_ext_stream *link_dev =
284 snd_soc_dai_get_dma_data(dai, substream);
285 struct sof_intel_hda_stream *hda_stream;
286 struct snd_soc_pcm_runtime *rtd;
287 struct hdac_ext_link *link;
288 struct hdac_stream *hstream;
289 struct hdac_bus *bus;
290 int stream_tag;
291 int ret;
292
293 hstream = substream->runtime->private_data;
294 bus = hstream->bus;
295 rtd = asoc_substream_to_rtd(substream);
296
297 link = snd_hdac_ext_bus_get_link(bus, asoc_rtd_to_codec(rtd, 0)->component->name);
298 if (!link)
299 return -EINVAL;
300
301 hda_stream = hstream_to_sof_hda_stream(link_dev);
302
303 dev_dbg(dai->dev, "In %s cmd=%d\n", __func__, cmd);
304 switch (cmd) {
305 case SNDRV_PCM_TRIGGER_RESUME:
306 /* set up hw_params */
307 ret = hda_link_pcm_prepare(substream, dai);
308 if (ret < 0) {
309 dev_err(dai->dev,
310 "error: setting up hw_params during resume\n");
311 return ret;
312 }
313
314 fallthrough;
315 case SNDRV_PCM_TRIGGER_START:
316 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
317 snd_hdac_ext_link_stream_start(link_dev);
318 break;
319 case SNDRV_PCM_TRIGGER_SUSPEND:
320 case SNDRV_PCM_TRIGGER_STOP:
321 /*
322 * clear link DMA channel. It will be assigned when
323 * hw_params is set up again after resume.
324 */
325 ret = hda_link_config_ipc(hda_stream, dai->name,
326 DMA_CHAN_INVALID, substream->stream);
327 if (ret < 0)
328 return ret;
329
330 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
331 stream_tag = hdac_stream(link_dev)->stream_tag;
332 snd_hdac_ext_link_clear_stream_id(link, stream_tag);
333 }
334
335 link_dev->link_prepared = 0;
336
337 fallthrough;
338 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
339 snd_hdac_ext_link_stream_clear(link_dev);
340 break;
341 default:
342 return -EINVAL;
343 }
344 return 0;
345 }
346
hda_link_hw_free(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)347 static int hda_link_hw_free(struct snd_pcm_substream *substream,
348 struct snd_soc_dai *dai)
349 {
350 unsigned int stream_tag;
351 struct sof_intel_hda_stream *hda_stream;
352 struct hdac_bus *bus;
353 struct hdac_ext_link *link;
354 struct hdac_stream *hstream;
355 struct snd_soc_pcm_runtime *rtd;
356 struct hdac_ext_stream *link_dev;
357 int ret;
358
359 hstream = substream->runtime->private_data;
360 bus = hstream->bus;
361 rtd = asoc_substream_to_rtd(substream);
362 link_dev = snd_soc_dai_get_dma_data(dai, substream);
363
364 if (!link_dev) {
365 dev_dbg(dai->dev,
366 "%s: link_dev is not assigned\n", __func__);
367 return -EINVAL;
368 }
369
370 hda_stream = hstream_to_sof_hda_stream(link_dev);
371
372 /* free the link DMA channel in the FW */
373 ret = hda_link_config_ipc(hda_stream, dai->name, DMA_CHAN_INVALID,
374 substream->stream);
375 if (ret < 0)
376 return ret;
377
378 link = snd_hdac_ext_bus_get_link(bus, asoc_rtd_to_codec(rtd, 0)->component->name);
379 if (!link)
380 return -EINVAL;
381
382 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
383 stream_tag = hdac_stream(link_dev)->stream_tag;
384 snd_hdac_ext_link_clear_stream_id(link, stream_tag);
385 }
386
387 snd_soc_dai_set_dma_data(dai, substream, NULL);
388 snd_hdac_ext_stream_release(link_dev, HDAC_EXT_STREAM_TYPE_LINK);
389 link_dev->link_prepared = 0;
390
391 /* free the host DMA channel reserved by hostless streams */
392 hda_stream->host_reserved = 0;
393
394 return 0;
395 }
396
397 static const struct snd_soc_dai_ops hda_link_dai_ops = {
398 .hw_params = hda_link_hw_params,
399 .hw_free = hda_link_hw_free,
400 .trigger = hda_link_pcm_trigger,
401 .prepare = hda_link_pcm_prepare,
402 };
403
404 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_PROBES)
405 #include "../compress.h"
406
407 static struct snd_soc_cdai_ops sof_probe_compr_ops = {
408 .startup = sof_probe_compr_open,
409 .shutdown = sof_probe_compr_free,
410 .set_params = sof_probe_compr_set_params,
411 .trigger = sof_probe_compr_trigger,
412 .pointer = sof_probe_compr_pointer,
413 };
414
415 #endif
416 #endif
417
418 /*
419 * common dai driver for skl+ platforms.
420 * some products who use this DAI array only physically have a subset of
421 * the DAIs, but no harm is done here by adding the whole set.
422 */
423 struct snd_soc_dai_driver skl_dai[] = {
424 {
425 .name = "SSP0 Pin",
426 .playback = {
427 .channels_min = 1,
428 .channels_max = 8,
429 },
430 .capture = {
431 .channels_min = 1,
432 .channels_max = 8,
433 },
434 },
435 {
436 .name = "SSP1 Pin",
437 .playback = {
438 .channels_min = 1,
439 .channels_max = 8,
440 },
441 .capture = {
442 .channels_min = 1,
443 .channels_max = 8,
444 },
445 },
446 {
447 .name = "SSP2 Pin",
448 .playback = {
449 .channels_min = 1,
450 .channels_max = 8,
451 },
452 .capture = {
453 .channels_min = 1,
454 .channels_max = 8,
455 },
456 },
457 {
458 .name = "SSP3 Pin",
459 .playback = {
460 .channels_min = 1,
461 .channels_max = 8,
462 },
463 .capture = {
464 .channels_min = 1,
465 .channels_max = 8,
466 },
467 },
468 {
469 .name = "SSP4 Pin",
470 .playback = {
471 .channels_min = 1,
472 .channels_max = 8,
473 },
474 .capture = {
475 .channels_min = 1,
476 .channels_max = 8,
477 },
478 },
479 {
480 .name = "SSP5 Pin",
481 .playback = {
482 .channels_min = 1,
483 .channels_max = 8,
484 },
485 .capture = {
486 .channels_min = 1,
487 .channels_max = 8,
488 },
489 },
490 {
491 .name = "DMIC01 Pin",
492 .capture = {
493 .channels_min = 1,
494 .channels_max = 4,
495 },
496 },
497 {
498 .name = "DMIC16k Pin",
499 .capture = {
500 .channels_min = 1,
501 .channels_max = 4,
502 },
503 },
504 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
505 {
506 .name = "iDisp1 Pin",
507 .ops = &hda_link_dai_ops,
508 .playback = {
509 .channels_min = 1,
510 .channels_max = 8,
511 },
512 },
513 {
514 .name = "iDisp2 Pin",
515 .ops = &hda_link_dai_ops,
516 .playback = {
517 .channels_min = 1,
518 .channels_max = 8,
519 },
520 },
521 {
522 .name = "iDisp3 Pin",
523 .ops = &hda_link_dai_ops,
524 .playback = {
525 .channels_min = 1,
526 .channels_max = 8,
527 },
528 },
529 {
530 .name = "iDisp4 Pin",
531 .ops = &hda_link_dai_ops,
532 .playback = {
533 .channels_min = 1,
534 .channels_max = 8,
535 },
536 },
537 {
538 .name = "Analog CPU DAI",
539 .ops = &hda_link_dai_ops,
540 .playback = {
541 .channels_min = 1,
542 .channels_max = 16,
543 },
544 .capture = {
545 .channels_min = 1,
546 .channels_max = 16,
547 },
548 },
549 {
550 .name = "Digital CPU DAI",
551 .ops = &hda_link_dai_ops,
552 .playback = {
553 .channels_min = 1,
554 .channels_max = 16,
555 },
556 .capture = {
557 .channels_min = 1,
558 .channels_max = 16,
559 },
560 },
561 {
562 .name = "Alt Analog CPU DAI",
563 .ops = &hda_link_dai_ops,
564 .playback = {
565 .channels_min = 1,
566 .channels_max = 16,
567 },
568 .capture = {
569 .channels_min = 1,
570 .channels_max = 16,
571 },
572 },
573 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_PROBES)
574 {
575 .name = "Probe Extraction CPU DAI",
576 .compress_new = snd_soc_new_compress,
577 .cops = &sof_probe_compr_ops,
578 .capture = {
579 .stream_name = "Probe Extraction",
580 .channels_min = 1,
581 .channels_max = 8,
582 .rates = SNDRV_PCM_RATE_48000,
583 .rate_min = 48000,
584 .rate_max = 48000,
585 },
586 },
587 #endif
588 #endif
589 };
590