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