2 * skl-pcm.c -ASoC HDA Platform driver file implementing PCM functionality
4 * Copyright (C) 2014-2015 Intel Corp
5 * Author: Jeeja KP <jeeja.kp@intel.com>
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; version 2 of the License.
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
22 #include <linux/pci.h>
23 #include <linux/pm_runtime.h>
24 #include <sound/pcm_params.h>
25 #include <sound/soc.h>
31 static struct snd_pcm_hardware azx_pcm_hw
= {
32 .info
= (SNDRV_PCM_INFO_MMAP
|
33 SNDRV_PCM_INFO_INTERLEAVED
|
34 SNDRV_PCM_INFO_BLOCK_TRANSFER
|
35 SNDRV_PCM_INFO_MMAP_VALID
|
36 SNDRV_PCM_INFO_PAUSE
|
37 SNDRV_PCM_INFO_SYNC_START
|
38 SNDRV_PCM_INFO_HAS_WALL_CLOCK
| /* legacy */
39 SNDRV_PCM_INFO_HAS_LINK_ATIME
|
40 SNDRV_PCM_INFO_NO_PERIOD_WAKEUP
),
41 .formats
= SNDRV_PCM_FMTBIT_S16_LE
,
42 .rates
= SNDRV_PCM_RATE_48000
,
47 .buffer_bytes_max
= AZX_MAX_BUF_SIZE
,
48 .period_bytes_min
= 128,
49 .period_bytes_max
= AZX_MAX_BUF_SIZE
/ 2,
51 .periods_max
= AZX_MAX_FRAG
,
56 struct hdac_ext_stream
*get_hdac_ext_stream(struct snd_pcm_substream
*substream
)
58 return substream
->runtime
->private_data
;
61 static struct hdac_ext_bus
*get_bus_ctx(struct snd_pcm_substream
*substream
)
63 struct hdac_ext_stream
*stream
= get_hdac_ext_stream(substream
);
64 struct hdac_stream
*hstream
= hdac_stream(stream
);
65 struct hdac_bus
*bus
= hstream
->bus
;
67 return hbus_to_ebus(bus
);
70 static int skl_substream_alloc_pages(struct hdac_ext_bus
*ebus
,
71 struct snd_pcm_substream
*substream
,
74 struct hdac_ext_stream
*stream
= get_hdac_ext_stream(substream
);
76 hdac_stream(stream
)->bufsize
= 0;
77 hdac_stream(stream
)->period_bytes
= 0;
78 hdac_stream(stream
)->format_val
= 0;
80 return snd_pcm_lib_malloc_pages(substream
, size
);
83 static int skl_substream_free_pages(struct hdac_bus
*bus
,
84 struct snd_pcm_substream
*substream
)
86 return snd_pcm_lib_free_pages(substream
);
89 static void skl_set_pcm_constrains(struct hdac_ext_bus
*ebus
,
90 struct snd_pcm_runtime
*runtime
)
92 snd_pcm_hw_constraint_integer(runtime
, SNDRV_PCM_HW_PARAM_PERIODS
);
94 /* avoid wrap-around with wall-clock */
95 snd_pcm_hw_constraint_minmax(runtime
, SNDRV_PCM_HW_PARAM_BUFFER_TIME
,
99 static enum hdac_ext_stream_type
skl_get_host_stream_type(struct hdac_ext_bus
*ebus
)
102 return HDAC_EXT_STREAM_TYPE_HOST
;
104 return HDAC_EXT_STREAM_TYPE_COUPLED
;
107 static int skl_pcm_open(struct snd_pcm_substream
*substream
,
108 struct snd_soc_dai
*dai
)
110 struct hdac_ext_bus
*ebus
= dev_get_drvdata(dai
->dev
);
111 struct hdac_ext_stream
*stream
;
112 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
113 struct skl_dma_params
*dma_params
;
116 dev_dbg(dai
->dev
, "%s: %s\n", __func__
, dai
->name
);
117 ret
= pm_runtime_get_sync(dai
->dev
);
121 stream
= snd_hdac_ext_stream_assign(ebus
, substream
,
122 skl_get_host_stream_type(ebus
));
126 skl_set_pcm_constrains(ebus
, runtime
);
129 * disable WALLCLOCK timestamps for capture streams
130 * until we figure out how to handle digital inputs
132 if (substream
->stream
== SNDRV_PCM_STREAM_CAPTURE
) {
133 runtime
->hw
.info
&= ~SNDRV_PCM_INFO_HAS_WALL_CLOCK
; /* legacy */
134 runtime
->hw
.info
&= ~SNDRV_PCM_INFO_HAS_LINK_ATIME
;
137 runtime
->private_data
= stream
;
139 dma_params
= kzalloc(sizeof(*dma_params
), GFP_KERNEL
);
143 dma_params
->stream_tag
= hdac_stream(stream
)->stream_tag
;
144 snd_soc_dai_set_dma_data(dai
, substream
, dma_params
);
146 dev_dbg(dai
->dev
, "stream tag set in dma params=%d\n",
147 dma_params
->stream_tag
);
148 snd_pcm_set_sync(substream
);
153 static int skl_get_format(struct snd_pcm_substream
*substream
,
154 struct snd_soc_dai
*dai
)
156 struct snd_soc_pcm_runtime
*rtd
= snd_pcm_substream_chip(substream
);
157 struct skl_dma_params
*dma_params
;
158 struct hdac_ext_bus
*ebus
= dev_get_drvdata(dai
->dev
);
162 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
164 format_val
= snd_hdac_calc_stream_format(runtime
->rate
,
169 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
171 dma_params
= snd_soc_dai_get_dma_data(codec_dai
, substream
);
173 format_val
= dma_params
->format
;
179 static int skl_pcm_prepare(struct snd_pcm_substream
*substream
,
180 struct snd_soc_dai
*dai
)
182 struct hdac_ext_stream
*stream
= get_hdac_ext_stream(substream
);
183 unsigned int format_val
;
186 dev_dbg(dai
->dev
, "%s: %s\n", __func__
, dai
->name
);
187 if (hdac_stream(stream
)->prepared
) {
188 dev_dbg(dai
->dev
, "already stream is prepared - returning\n");
192 format_val
= skl_get_format(substream
, dai
);
193 dev_dbg(dai
->dev
, "stream_tag=%d formatvalue=%d\n",
194 hdac_stream(stream
)->stream_tag
, format_val
);
195 snd_hdac_stream_reset(hdac_stream(stream
));
197 err
= snd_hdac_stream_set_params(hdac_stream(stream
), format_val
);
201 err
= snd_hdac_stream_setup(hdac_stream(stream
));
205 hdac_stream(stream
)->prepared
= 1;
210 static int skl_pcm_hw_params(struct snd_pcm_substream
*substream
,
211 struct snd_pcm_hw_params
*params
,
212 struct snd_soc_dai
*dai
)
214 struct hdac_ext_bus
*ebus
= dev_get_drvdata(dai
->dev
);
215 struct hdac_ext_stream
*stream
= get_hdac_ext_stream(substream
);
216 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
219 dev_dbg(dai
->dev
, "%s: %s\n", __func__
, dai
->name
);
220 ret
= skl_substream_alloc_pages(ebus
, substream
,
221 params_buffer_bytes(params
));
225 dev_dbg(dai
->dev
, "format_val, rate=%d, ch=%d, format=%d\n",
226 runtime
->rate
, runtime
->channels
, runtime
->format
);
228 dma_id
= hdac_stream(stream
)->stream_tag
- 1;
229 dev_dbg(dai
->dev
, "dma_id=%d\n", dma_id
);
234 static void skl_pcm_close(struct snd_pcm_substream
*substream
,
235 struct snd_soc_dai
*dai
)
237 struct hdac_ext_stream
*stream
= get_hdac_ext_stream(substream
);
238 struct hdac_ext_bus
*ebus
= dev_get_drvdata(dai
->dev
);
239 struct skl_dma_params
*dma_params
= NULL
;
241 dev_dbg(dai
->dev
, "%s: %s\n", __func__
, dai
->name
);
243 snd_hdac_ext_stream_release(stream
, skl_get_host_stream_type(ebus
));
245 dma_params
= snd_soc_dai_get_dma_data(dai
, substream
);
247 * now we should set this to NULL as we are freeing by the
250 snd_soc_dai_set_dma_data(dai
, substream
, NULL
);
252 pm_runtime_mark_last_busy(dai
->dev
);
253 pm_runtime_put_autosuspend(dai
->dev
);
257 static int skl_pcm_hw_free(struct snd_pcm_substream
*substream
,
258 struct snd_soc_dai
*dai
)
260 struct hdac_ext_bus
*ebus
= dev_get_drvdata(dai
->dev
);
261 struct hdac_ext_stream
*stream
= get_hdac_ext_stream(substream
);
263 dev_dbg(dai
->dev
, "%s: %s\n", __func__
, dai
->name
);
265 snd_hdac_stream_cleanup(hdac_stream(stream
));
266 hdac_stream(stream
)->prepared
= 0;
268 return skl_substream_free_pages(ebus_to_hbus(ebus
), substream
);
271 static int skl_link_hw_params(struct snd_pcm_substream
*substream
,
272 struct snd_pcm_hw_params
*params
,
273 struct snd_soc_dai
*dai
)
275 struct hdac_ext_bus
*ebus
= dev_get_drvdata(dai
->dev
);
276 struct hdac_ext_stream
*link_dev
;
277 struct snd_soc_pcm_runtime
*rtd
= snd_pcm_substream_chip(substream
);
278 struct skl_dma_params
*dma_params
;
279 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
282 pr_debug("%s\n", __func__
);
283 link_dev
= snd_hdac_ext_stream_assign(ebus
, substream
,
284 HDAC_EXT_STREAM_TYPE_LINK
);
288 snd_soc_dai_set_dma_data(dai
, substream
, (void *)link_dev
);
290 /* set the stream tag in the codec dai dma params */
291 dma_params
= (struct skl_dma_params
*)
292 snd_soc_dai_get_dma_data(codec_dai
, substream
);
294 dma_params
->stream_tag
= hdac_stream(link_dev
)->stream_tag
;
295 snd_soc_dai_set_dma_data(codec_dai
, substream
, (void *)dma_params
);
296 dma_id
= hdac_stream(link_dev
)->stream_tag
- 1;
301 static int skl_link_pcm_prepare(struct snd_pcm_substream
*substream
,
302 struct snd_soc_dai
*dai
)
304 struct snd_soc_pcm_runtime
*rtd
= snd_pcm_substream_chip(substream
);
305 struct hdac_ext_bus
*ebus
= dev_get_drvdata(dai
->dev
);
306 struct hdac_ext_stream
*link_dev
=
307 snd_soc_dai_get_dma_data(dai
, substream
);
308 unsigned int format_val
= 0;
309 struct skl_dma_params
*dma_params
;
310 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
311 struct snd_pcm_hw_params
*params
;
312 struct snd_interval
*channels
, *rate
;
313 struct hdac_ext_link
*link
;
315 dev_dbg(dai
->dev
, "%s: %s\n", __func__
, dai
->name
);
316 if (link_dev
->link_prepared
) {
317 dev_dbg(dai
->dev
, "already stream is prepared - returning\n");
320 params
= devm_kzalloc(dai
->dev
, sizeof(*params
), GFP_KERNEL
);
324 channels
= hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
);
325 channels
->min
= channels
->max
= substream
->runtime
->channels
;
326 rate
= hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
);
327 rate
->min
= rate
->max
= substream
->runtime
->rate
;
328 snd_mask_set(¶ms
->masks
[SNDRV_PCM_HW_PARAM_FORMAT
-
329 SNDRV_PCM_HW_PARAM_FIRST_MASK
],
330 substream
->runtime
->format
);
333 dma_params
= (struct skl_dma_params
*)
334 snd_soc_dai_get_dma_data(codec_dai
, substream
);
336 format_val
= dma_params
->format
;
337 dev_dbg(dai
->dev
, "stream_tag=%d formatvalue=%d codec_dai_name=%s\n",
338 hdac_stream(link_dev
)->stream_tag
, format_val
, codec_dai
->name
);
340 snd_hdac_ext_link_stream_reset(link_dev
);
342 snd_hdac_ext_link_stream_setup(link_dev
, format_val
);
344 link
= snd_hdac_ext_bus_get_link(ebus
, rtd
->codec
->component
.name
);
348 snd_hdac_ext_link_set_stream_id(link
, hdac_stream(link_dev
)->stream_tag
);
349 link_dev
->link_prepared
= 1;
354 static int skl_link_pcm_trigger(struct snd_pcm_substream
*substream
,
355 int cmd
, struct snd_soc_dai
*dai
)
357 struct hdac_ext_stream
*link_dev
=
358 snd_soc_dai_get_dma_data(dai
, substream
);
360 dev_dbg(dai
->dev
, "In %s cmd=%d\n", __func__
, cmd
);
362 case SNDRV_PCM_TRIGGER_START
:
363 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE
:
364 case SNDRV_PCM_TRIGGER_RESUME
:
365 snd_hdac_ext_link_stream_start(link_dev
);
368 case SNDRV_PCM_TRIGGER_PAUSE_PUSH
:
369 case SNDRV_PCM_TRIGGER_SUSPEND
:
370 case SNDRV_PCM_TRIGGER_STOP
:
371 snd_hdac_ext_link_stream_clear(link_dev
);
380 static int skl_link_hw_free(struct snd_pcm_substream
*substream
,
381 struct snd_soc_dai
*dai
)
383 struct hdac_ext_bus
*ebus
= dev_get_drvdata(dai
->dev
);
384 struct snd_soc_pcm_runtime
*rtd
= snd_pcm_substream_chip(substream
);
385 struct hdac_ext_stream
*link_dev
=
386 snd_soc_dai_get_dma_data(dai
, substream
);
387 struct hdac_ext_link
*link
;
389 dev_dbg(dai
->dev
, "%s: %s\n", __func__
, dai
->name
);
391 link_dev
->link_prepared
= 0;
393 link
= snd_hdac_ext_bus_get_link(ebus
, rtd
->codec
->component
.name
);
397 snd_hdac_ext_link_clear_stream_id(link
, hdac_stream(link_dev
)->stream_tag
);
398 snd_hdac_ext_stream_release(link_dev
, HDAC_EXT_STREAM_TYPE_LINK
);
402 static int skl_hda_be_startup(struct snd_pcm_substream
*substream
,
403 struct snd_soc_dai
*dai
)
405 return pm_runtime_get_sync(dai
->dev
);
408 static void skl_hda_be_shutdown(struct snd_pcm_substream
*substream
,
409 struct snd_soc_dai
*dai
)
411 pm_runtime_mark_last_busy(dai
->dev
);
412 pm_runtime_put_autosuspend(dai
->dev
);
415 static struct snd_soc_dai_ops skl_pcm_dai_ops
= {
416 .startup
= skl_pcm_open
,
417 .shutdown
= skl_pcm_close
,
418 .prepare
= skl_pcm_prepare
,
419 .hw_params
= skl_pcm_hw_params
,
420 .hw_free
= skl_pcm_hw_free
,
423 static struct snd_soc_dai_ops skl_dmic_dai_ops
= {
424 .startup
= skl_hda_be_startup
,
425 .shutdown
= skl_hda_be_shutdown
,
428 static struct snd_soc_dai_ops skl_link_dai_ops
= {
429 .startup
= skl_hda_be_startup
,
430 .prepare
= skl_link_pcm_prepare
,
431 .hw_params
= skl_link_hw_params
,
432 .hw_free
= skl_link_hw_free
,
433 .trigger
= skl_link_pcm_trigger
,
434 .shutdown
= skl_hda_be_shutdown
,
437 static struct snd_soc_dai_driver skl_platform_dai
[] = {
439 .name
= "System Pin",
440 .ops
= &skl_pcm_dai_ops
,
442 .stream_name
= "System Playback",
443 .channels_min
= HDA_MONO
,
444 .channels_max
= HDA_STEREO
,
445 .rates
= SNDRV_PCM_RATE_48000
| SNDRV_PCM_RATE_16000
| SNDRV_PCM_RATE_8000
,
446 .formats
= SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S24_LE
,
449 .stream_name
= "System Capture",
450 .channels_min
= HDA_MONO
,
451 .channels_max
= HDA_STEREO
,
452 .rates
= SNDRV_PCM_RATE_48000
| SNDRV_PCM_RATE_16000
,
453 .formats
= SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S24_LE
,
457 .name
= "Reference Pin",
458 .ops
= &skl_pcm_dai_ops
,
460 .stream_name
= "Reference Capture",
461 .channels_min
= HDA_MONO
,
462 .channels_max
= HDA_STEREO
,
463 .rates
= SNDRV_PCM_RATE_48000
| SNDRV_PCM_RATE_16000
,
464 .formats
= SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S24_LE
,
468 .name
= "Deepbuffer Pin",
469 .ops
= &skl_pcm_dai_ops
,
471 .stream_name
= "Deepbuffer Playback",
472 .channels_min
= HDA_STEREO
,
473 .channels_max
= HDA_STEREO
,
474 .rates
= SNDRV_PCM_RATE_48000
,
475 .formats
= SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S24_LE
,
479 .name
= "LowLatency Pin",
480 .ops
= &skl_pcm_dai_ops
,
482 .stream_name
= "Low Latency Playback",
483 .channels_min
= HDA_STEREO
,
484 .channels_max
= HDA_STEREO
,
485 .rates
= SNDRV_PCM_RATE_48000
,
486 .formats
= SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S24_LE
,
492 .ops
= &skl_link_dai_ops
,
494 .stream_name
= "iDisp Tx",
495 .channels_min
= HDA_STEREO
,
496 .channels_max
= HDA_STEREO
,
497 .rates
= SNDRV_PCM_RATE_8000
|SNDRV_PCM_RATE_16000
|SNDRV_PCM_RATE_48000
,
498 .formats
= SNDRV_PCM_FMTBIT_S16_LE
,
502 .name
= "DMIC01 Pin",
503 .ops
= &skl_dmic_dai_ops
,
505 .stream_name
= "DMIC01 Rx",
506 .channels_min
= HDA_STEREO
,
507 .channels_max
= HDA_STEREO
,
508 .rates
= SNDRV_PCM_RATE_48000
| SNDRV_PCM_RATE_16000
,
509 .formats
= SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S24_LE
,
513 .name
= "DMIC23 Pin",
514 .ops
= &skl_dmic_dai_ops
,
516 .stream_name
= "DMIC23 Rx",
517 .channels_min
= HDA_STEREO
,
518 .channels_max
= HDA_STEREO
,
519 .rates
= SNDRV_PCM_RATE_48000
| SNDRV_PCM_RATE_16000
,
520 .formats
= SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S24_LE
,
524 .name
= "HD-Codec Pin",
525 .ops
= &skl_link_dai_ops
,
527 .stream_name
= "HD-Codec Tx",
528 .channels_min
= HDA_STEREO
,
529 .channels_max
= HDA_STEREO
,
530 .rates
= SNDRV_PCM_RATE_48000
,
531 .formats
= SNDRV_PCM_FMTBIT_S16_LE
,
534 .stream_name
= "HD-Codec Rx",
535 .channels_min
= HDA_STEREO
,
536 .channels_max
= HDA_STEREO
,
537 .rates
= SNDRV_PCM_RATE_48000
,
538 .formats
= SNDRV_PCM_FMTBIT_S16_LE
,
542 .name
= "HD-Codec-SPK Pin",
543 .ops
= &skl_link_dai_ops
,
545 .stream_name
= "HD-Codec-SPK Tx",
546 .channels_min
= HDA_STEREO
,
547 .channels_max
= HDA_STEREO
,
548 .rates
= SNDRV_PCM_RATE_48000
,
549 .formats
= SNDRV_PCM_FMTBIT_S16_LE
,
553 .name
= "HD-Codec-AMIC Pin",
554 .ops
= &skl_link_dai_ops
,
556 .stream_name
= "HD-Codec-AMIC Rx",
557 .channels_min
= HDA_STEREO
,
558 .channels_max
= HDA_STEREO
,
559 .rates
= SNDRV_PCM_RATE_48000
,
560 .formats
= SNDRV_PCM_FMTBIT_S16_LE
,
565 static int skl_platform_open(struct snd_pcm_substream
*substream
)
567 struct snd_pcm_runtime
*runtime
;
568 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
569 struct snd_soc_dai_link
*dai_link
= rtd
->dai_link
;
571 dev_dbg(rtd
->cpu_dai
->dev
, "In %s:%s\n", __func__
,
572 dai_link
->cpu_dai_name
);
574 runtime
= substream
->runtime
;
575 snd_soc_set_runtime_hwparams(substream
, &azx_pcm_hw
);
580 static int skl_pcm_trigger(struct snd_pcm_substream
*substream
,
583 struct hdac_ext_bus
*ebus
= get_bus_ctx(substream
);
584 struct hdac_bus
*bus
= ebus_to_hbus(ebus
);
585 struct hdac_ext_stream
*stream
;
586 struct snd_pcm_substream
*s
;
589 unsigned long cookie
;
590 struct hdac_stream
*hstr
;
592 stream
= get_hdac_ext_stream(substream
);
593 hstr
= hdac_stream(stream
);
595 dev_dbg(bus
->dev
, "In %s cmd=%d\n", __func__
, cmd
);
601 case SNDRV_PCM_TRIGGER_START
:
602 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE
:
603 case SNDRV_PCM_TRIGGER_RESUME
:
607 case SNDRV_PCM_TRIGGER_PAUSE_PUSH
:
608 case SNDRV_PCM_TRIGGER_SUSPEND
:
609 case SNDRV_PCM_TRIGGER_STOP
:
617 snd_pcm_group_for_each_entry(s
, substream
) {
618 if (s
->pcm
->card
!= substream
->pcm
->card
)
620 stream
= get_hdac_ext_stream(s
);
621 sbits
|= 1 << hdac_stream(stream
)->index
;
622 snd_pcm_trigger_done(s
, substream
);
625 spin_lock_irqsave(&bus
->reg_lock
, cookie
);
627 /* first, set SYNC bits of corresponding streams */
628 snd_hdac_stream_sync_trigger(hstr
, true, sbits
, AZX_REG_SSYNC
);
630 snd_pcm_group_for_each_entry(s
, substream
) {
631 if (s
->pcm
->card
!= substream
->pcm
->card
)
633 stream
= get_hdac_ext_stream(s
);
635 snd_hdac_stream_start(hdac_stream(stream
), true);
637 snd_hdac_stream_stop(hdac_stream(stream
));
639 spin_unlock_irqrestore(&bus
->reg_lock
, cookie
);
641 snd_hdac_stream_sync(hstr
, start
, sbits
);
643 spin_lock_irqsave(&bus
->reg_lock
, cookie
);
645 /* reset SYNC bits */
646 snd_hdac_stream_sync_trigger(hstr
, false, sbits
, AZX_REG_SSYNC
);
648 snd_hdac_stream_timecounter_init(hstr
, sbits
);
649 spin_unlock_irqrestore(&bus
->reg_lock
, cookie
);
654 static int skl_dsp_trigger(struct snd_pcm_substream
*substream
,
657 struct hdac_ext_bus
*ebus
= get_bus_ctx(substream
);
658 struct hdac_bus
*bus
= ebus_to_hbus(ebus
);
659 struct snd_soc_pcm_runtime
*rtd
= snd_pcm_substream_chip(substream
);
660 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
661 struct hdac_ext_stream
*stream
;
663 unsigned long cookie
;
664 struct hdac_stream
*hstr
;
666 dev_dbg(bus
->dev
, "In %s cmd=%d streamname=%s\n", __func__
, cmd
, cpu_dai
->name
);
668 stream
= get_hdac_ext_stream(substream
);
669 hstr
= hdac_stream(stream
);
675 case SNDRV_PCM_TRIGGER_START
:
676 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE
:
677 case SNDRV_PCM_TRIGGER_RESUME
:
681 case SNDRV_PCM_TRIGGER_PAUSE_PUSH
:
682 case SNDRV_PCM_TRIGGER_SUSPEND
:
683 case SNDRV_PCM_TRIGGER_STOP
:
691 spin_lock_irqsave(&bus
->reg_lock
, cookie
);
694 snd_hdac_stream_start(hdac_stream(stream
), true);
696 snd_hdac_stream_stop(hdac_stream(stream
));
699 snd_hdac_stream_timecounter_init(hstr
, 0);
701 spin_unlock_irqrestore(&bus
->reg_lock
, cookie
);
705 static int skl_platform_pcm_trigger(struct snd_pcm_substream
*substream
,
708 struct hdac_ext_bus
*ebus
= get_bus_ctx(substream
);
711 return skl_dsp_trigger(substream
, cmd
);
713 return skl_pcm_trigger(substream
, cmd
);
716 /* calculate runtime delay from LPIB */
717 static int skl_get_delay_from_lpib(struct hdac_ext_bus
*ebus
,
718 struct hdac_ext_stream
*sstream
,
721 struct hdac_bus
*bus
= ebus_to_hbus(ebus
);
722 struct hdac_stream
*hstream
= hdac_stream(sstream
);
723 struct snd_pcm_substream
*substream
= hstream
->substream
;
724 int stream
= substream
->stream
;
725 unsigned int lpib_pos
= snd_hdac_stream_get_pos_lpib(hstream
);
728 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
)
729 delay
= pos
- lpib_pos
;
731 delay
= lpib_pos
- pos
;
734 if (delay
>= hstream
->delay_negative_threshold
)
737 delay
+= hstream
->bufsize
;
740 if (delay
>= hstream
->period_bytes
) {
742 "Unstable LPIB (%d >= %d); disabling LPIB delay counting\n",
743 delay
, hstream
->period_bytes
);
747 return bytes_to_frames(substream
->runtime
, delay
);
750 static unsigned int skl_get_position(struct hdac_ext_stream
*hstream
,
753 struct hdac_stream
*hstr
= hdac_stream(hstream
);
754 struct snd_pcm_substream
*substream
= hstr
->substream
;
755 struct hdac_ext_bus
*ebus
= get_bus_ctx(substream
);
759 /* use the position buffer as default */
760 pos
= snd_hdac_stream_get_pos_posbuf(hdac_stream(hstream
));
762 if (pos
>= hdac_stream(hstream
)->bufsize
)
765 if (substream
->runtime
) {
766 delay
= skl_get_delay_from_lpib(ebus
, hstream
, pos
)
768 substream
->runtime
->delay
+= delay
;
774 static snd_pcm_uframes_t skl_platform_pcm_pointer
775 (struct snd_pcm_substream
*substream
)
777 struct hdac_ext_stream
*hstream
= get_hdac_ext_stream(substream
);
779 return bytes_to_frames(substream
->runtime
,
780 skl_get_position(hstream
, 0));
783 static u64
skl_adjust_codec_delay(struct snd_pcm_substream
*substream
,
786 struct snd_soc_pcm_runtime
*rtd
= snd_pcm_substream_chip(substream
);
787 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
788 u64 codec_frames
, codec_nsecs
;
790 if (!codec_dai
->driver
->ops
->delay
)
793 codec_frames
= codec_dai
->driver
->ops
->delay(substream
, codec_dai
);
794 codec_nsecs
= div_u64(codec_frames
* 1000000000LL,
795 substream
->runtime
->rate
);
797 if (substream
->stream
== SNDRV_PCM_STREAM_CAPTURE
)
798 return nsec
+ codec_nsecs
;
800 return (nsec
> codec_nsecs
) ? nsec
- codec_nsecs
: 0;
803 static int skl_get_time_info(struct snd_pcm_substream
*substream
,
804 struct timespec
*system_ts
, struct timespec
*audio_ts
,
805 struct snd_pcm_audio_tstamp_config
*audio_tstamp_config
,
806 struct snd_pcm_audio_tstamp_report
*audio_tstamp_report
)
808 struct hdac_ext_stream
*sstream
= get_hdac_ext_stream(substream
);
809 struct hdac_stream
*hstr
= hdac_stream(sstream
);
812 if ((substream
->runtime
->hw
.info
& SNDRV_PCM_INFO_HAS_LINK_ATIME
) &&
813 (audio_tstamp_config
->type_requested
== SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK
)) {
815 snd_pcm_gettime(substream
->runtime
, system_ts
);
817 nsec
= timecounter_read(&hstr
->tc
);
818 nsec
= div_u64(nsec
, 3); /* can be optimized */
819 if (audio_tstamp_config
->report_delay
)
820 nsec
= skl_adjust_codec_delay(substream
, nsec
);
822 *audio_ts
= ns_to_timespec(nsec
);
824 audio_tstamp_report
->actual_type
= SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK
;
825 audio_tstamp_report
->accuracy_report
= 1; /* rest of struct is valid */
826 audio_tstamp_report
->accuracy
= 42; /* 24MHzWallClk == 42ns resolution */
829 audio_tstamp_report
->actual_type
= SNDRV_PCM_AUDIO_TSTAMP_TYPE_DEFAULT
;
835 static struct snd_pcm_ops skl_platform_ops
= {
836 .open
= skl_platform_open
,
837 .ioctl
= snd_pcm_lib_ioctl
,
838 .trigger
= skl_platform_pcm_trigger
,
839 .pointer
= skl_platform_pcm_pointer
,
840 .get_time_info
= skl_get_time_info
,
841 .mmap
= snd_pcm_lib_default_mmap
,
842 .page
= snd_pcm_sgbuf_ops_page
,
845 static void skl_pcm_free(struct snd_pcm
*pcm
)
847 snd_pcm_lib_preallocate_free_for_all(pcm
);
850 #define MAX_PREALLOC_SIZE (32 * 1024 * 1024)
852 static int skl_pcm_new(struct snd_soc_pcm_runtime
*rtd
)
854 struct snd_soc_dai
*dai
= rtd
->cpu_dai
;
855 struct hdac_ext_bus
*ebus
= dev_get_drvdata(dai
->dev
);
856 struct snd_pcm
*pcm
= rtd
->pcm
;
859 struct skl
*skl
= ebus_to_skl(ebus
);
861 if (dai
->driver
->playback
.channels_min
||
862 dai
->driver
->capture
.channels_min
) {
863 /* buffer pre-allocation */
864 size
= CONFIG_SND_HDA_PREALLOC_SIZE
* 1024;
865 if (size
> MAX_PREALLOC_SIZE
)
866 size
= MAX_PREALLOC_SIZE
;
867 retval
= snd_pcm_lib_preallocate_pages_for_all(pcm
,
868 SNDRV_DMA_TYPE_DEV_SG
,
869 snd_dma_pci_data(skl
->pci
),
870 size
, MAX_PREALLOC_SIZE
);
872 dev_err(dai
->dev
, "dma buffer allocationf fail\n");
880 static struct snd_soc_platform_driver skl_platform_drv
= {
881 .ops
= &skl_platform_ops
,
882 .pcm_new
= skl_pcm_new
,
883 .pcm_free
= skl_pcm_free
,
886 static const struct snd_soc_component_driver skl_component
= {
890 int skl_platform_register(struct device
*dev
)
894 ret
= snd_soc_register_platform(dev
, &skl_platform_drv
);
896 dev_err(dev
, "soc platform registration failed %d\n", ret
);
899 ret
= snd_soc_register_component(dev
, &skl_component
,
901 ARRAY_SIZE(skl_platform_dai
));
903 dev_err(dev
, "soc component registration failed %d\n", ret
);
904 snd_soc_unregister_platform(dev
);
911 int skl_platform_unregister(struct device
*dev
)
913 snd_soc_unregister_component(dev
);
914 snd_soc_unregister_platform(dev
);