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 | // Author: Liam Girdwood <liam.r.girdwood@linux.intel.com> |
9 | // |
10 | // PCM Layer, interface between ALSA and IPC. |
11 | // |
12 | |
13 | #include <linux/pm_runtime.h> |
14 | #include <sound/pcm_params.h> |
15 | #include <sound/sof.h> |
16 | #include <trace/events/sof.h> |
17 | #include "sof-of-dev.h" |
18 | #include "sof-priv.h" |
19 | #include "sof-audio.h" |
20 | #include "sof-utils.h" |
21 | #include "ops.h" |
22 | |
23 | /* Create DMA buffer page table for DSP */ |
24 | static int create_page_table(struct snd_soc_component *component, |
25 | struct snd_pcm_substream *substream, |
26 | unsigned char *dma_area, size_t size) |
27 | { |
28 | struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); |
29 | struct snd_sof_pcm *spcm; |
30 | struct snd_dma_buffer *dmab = snd_pcm_get_dma_buf(substream); |
31 | int stream = substream->stream; |
32 | |
33 | spcm = snd_sof_find_spcm_dai(scomp: component, rtd); |
34 | if (!spcm) |
35 | return -EINVAL; |
36 | |
37 | return snd_sof_create_page_table(dev: component->dev, dmab, |
38 | page_table: spcm->stream[stream].page_table.area, size); |
39 | } |
40 | |
41 | /* |
42 | * sof pcm period elapse work |
43 | */ |
44 | static void snd_sof_pcm_period_elapsed_work(struct work_struct *work) |
45 | { |
46 | struct snd_sof_pcm_stream *sps = |
47 | container_of(work, struct snd_sof_pcm_stream, |
48 | period_elapsed_work); |
49 | |
50 | snd_pcm_period_elapsed(substream: sps->substream); |
51 | } |
52 | |
53 | void snd_sof_pcm_init_elapsed_work(struct work_struct *work) |
54 | { |
55 | INIT_WORK(work, snd_sof_pcm_period_elapsed_work); |
56 | } |
57 | |
58 | /* |
59 | * sof pcm period elapse, this could be called at irq thread context. |
60 | */ |
61 | void snd_sof_pcm_period_elapsed(struct snd_pcm_substream *substream) |
62 | { |
63 | struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); |
64 | struct snd_soc_component *component = |
65 | snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME); |
66 | struct snd_sof_pcm *spcm; |
67 | |
68 | spcm = snd_sof_find_spcm_dai(scomp: component, rtd); |
69 | if (!spcm) { |
70 | dev_err(component->dev, |
71 | "error: period elapsed for unknown stream!\n" ); |
72 | return; |
73 | } |
74 | |
75 | /* |
76 | * snd_pcm_period_elapsed() can be called in interrupt context |
77 | * before IRQ_HANDLED is returned. Inside snd_pcm_period_elapsed(), |
78 | * when the PCM is done draining or xrun happened, a STOP IPC will |
79 | * then be sent and this IPC will hit IPC timeout. |
80 | * To avoid sending IPC before the previous IPC is handled, we |
81 | * schedule delayed work here to call the snd_pcm_period_elapsed(). |
82 | */ |
83 | schedule_work(work: &spcm->stream[substream->stream].period_elapsed_work); |
84 | } |
85 | EXPORT_SYMBOL(snd_sof_pcm_period_elapsed); |
86 | |
87 | static int |
88 | sof_pcm_setup_connected_widgets(struct snd_sof_dev *sdev, struct snd_soc_pcm_runtime *rtd, |
89 | struct snd_sof_pcm *spcm, struct snd_pcm_hw_params *params, |
90 | struct snd_sof_platform_stream_params *platform_params, int dir) |
91 | { |
92 | struct snd_soc_dai *dai; |
93 | int ret, j; |
94 | |
95 | /* query DAPM for list of connected widgets and set them up */ |
96 | for_each_rtd_cpu_dais(rtd, j, dai) { |
97 | struct snd_soc_dapm_widget_list *list; |
98 | |
99 | ret = snd_soc_dapm_dai_get_connected_widgets(dai, stream: dir, list: &list, |
100 | custom_stop_condition: dpcm_end_walk_at_be); |
101 | if (ret < 0) { |
102 | dev_err(sdev->dev, "error: dai %s has no valid %s path\n" , dai->name, |
103 | dir == SNDRV_PCM_STREAM_PLAYBACK ? "playback" : "capture" ); |
104 | return ret; |
105 | } |
106 | |
107 | spcm->stream[dir].list = list; |
108 | |
109 | ret = sof_widget_list_setup(sdev, spcm, fe_params: params, platform_params, dir); |
110 | if (ret < 0) { |
111 | dev_err(sdev->dev, "error: failed widget list set up for pcm %d dir %d\n" , |
112 | spcm->pcm.pcm_id, dir); |
113 | spcm->stream[dir].list = NULL; |
114 | snd_soc_dapm_dai_free_widgets(list: &list); |
115 | return ret; |
116 | } |
117 | } |
118 | |
119 | return 0; |
120 | } |
121 | |
122 | static int sof_pcm_hw_params(struct snd_soc_component *component, |
123 | struct snd_pcm_substream *substream, |
124 | struct snd_pcm_hw_params *params) |
125 | { |
126 | struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(c: component); |
127 | struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); |
128 | const struct sof_ipc_pcm_ops *pcm_ops = sof_ipc_get_ops(sdev, pcm); |
129 | struct snd_sof_platform_stream_params platform_params = { 0 }; |
130 | struct snd_pcm_runtime *runtime = substream->runtime; |
131 | struct snd_sof_pcm *spcm; |
132 | int ret; |
133 | |
134 | /* nothing to do for BE */ |
135 | if (rtd->dai_link->no_pcm) |
136 | return 0; |
137 | |
138 | spcm = snd_sof_find_spcm_dai(scomp: component, rtd); |
139 | if (!spcm) |
140 | return -EINVAL; |
141 | |
142 | /* |
143 | * Handle repeated calls to hw_params() without free_pcm() in |
144 | * between. At least ALSA OSS emulation depends on this. |
145 | */ |
146 | if (pcm_ops && pcm_ops->hw_free && spcm->prepared[substream->stream]) { |
147 | ret = pcm_ops->hw_free(component, substream); |
148 | if (ret < 0) |
149 | return ret; |
150 | |
151 | spcm->prepared[substream->stream] = false; |
152 | } |
153 | |
154 | dev_dbg(component->dev, "pcm: hw params stream %d dir %d\n" , |
155 | spcm->pcm.pcm_id, substream->stream); |
156 | |
157 | ret = snd_sof_pcm_platform_hw_params(sdev, substream, params, platform_params: &platform_params); |
158 | if (ret < 0) { |
159 | dev_err(component->dev, "platform hw params failed\n" ); |
160 | return ret; |
161 | } |
162 | |
163 | /* if this is a repeated hw_params without hw_free, skip setting up widgets */ |
164 | if (!spcm->stream[substream->stream].list) { |
165 | ret = sof_pcm_setup_connected_widgets(sdev, rtd, spcm, params, platform_params: &platform_params, |
166 | dir: substream->stream); |
167 | if (ret < 0) |
168 | return ret; |
169 | } |
170 | |
171 | /* create compressed page table for audio firmware */ |
172 | if (runtime->buffer_changed) { |
173 | ret = create_page_table(component, substream, dma_area: runtime->dma_area, |
174 | size: runtime->dma_bytes); |
175 | |
176 | if (ret < 0) |
177 | return ret; |
178 | } |
179 | |
180 | if (pcm_ops && pcm_ops->hw_params) { |
181 | ret = pcm_ops->hw_params(component, substream, params, &platform_params); |
182 | if (ret < 0) |
183 | return ret; |
184 | } |
185 | |
186 | spcm->prepared[substream->stream] = true; |
187 | |
188 | /* save pcm hw_params */ |
189 | memcpy(&spcm->params[substream->stream], params, sizeof(*params)); |
190 | |
191 | return 0; |
192 | } |
193 | |
194 | static int sof_pcm_hw_free(struct snd_soc_component *component, |
195 | struct snd_pcm_substream *substream) |
196 | { |
197 | struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); |
198 | struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(c: component); |
199 | const struct sof_ipc_pcm_ops *pcm_ops = sof_ipc_get_ops(sdev, pcm); |
200 | struct snd_sof_pcm *spcm; |
201 | int ret, err = 0; |
202 | |
203 | /* nothing to do for BE */ |
204 | if (rtd->dai_link->no_pcm) |
205 | return 0; |
206 | |
207 | spcm = snd_sof_find_spcm_dai(scomp: component, rtd); |
208 | if (!spcm) |
209 | return -EINVAL; |
210 | |
211 | dev_dbg(component->dev, "pcm: free stream %d dir %d\n" , |
212 | spcm->pcm.pcm_id, substream->stream); |
213 | |
214 | if (spcm->prepared[substream->stream]) { |
215 | /* stop DMA first if needed */ |
216 | if (pcm_ops && pcm_ops->platform_stop_during_hw_free) |
217 | snd_sof_pcm_platform_trigger(sdev, substream, SNDRV_PCM_TRIGGER_STOP); |
218 | |
219 | /* free PCM in the DSP */ |
220 | if (pcm_ops && pcm_ops->hw_free) { |
221 | ret = pcm_ops->hw_free(component, substream); |
222 | if (ret < 0) |
223 | err = ret; |
224 | } |
225 | |
226 | spcm->prepared[substream->stream] = false; |
227 | } |
228 | |
229 | /* reset DMA */ |
230 | ret = snd_sof_pcm_platform_hw_free(sdev, substream); |
231 | if (ret < 0) { |
232 | dev_err(component->dev, "error: platform hw free failed\n" ); |
233 | err = ret; |
234 | } |
235 | |
236 | /* free the DAPM widget list */ |
237 | ret = sof_widget_list_free(sdev, spcm, dir: substream->stream); |
238 | if (ret < 0) |
239 | err = ret; |
240 | |
241 | cancel_work_sync(work: &spcm->stream[substream->stream].period_elapsed_work); |
242 | |
243 | return err; |
244 | } |
245 | |
246 | static int sof_pcm_prepare(struct snd_soc_component *component, |
247 | struct snd_pcm_substream *substream) |
248 | { |
249 | struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); |
250 | struct snd_sof_pcm *spcm; |
251 | int ret; |
252 | |
253 | /* nothing to do for BE */ |
254 | if (rtd->dai_link->no_pcm) |
255 | return 0; |
256 | |
257 | spcm = snd_sof_find_spcm_dai(scomp: component, rtd); |
258 | if (!spcm) |
259 | return -EINVAL; |
260 | |
261 | if (spcm->prepared[substream->stream]) |
262 | return 0; |
263 | |
264 | dev_dbg(component->dev, "pcm: prepare stream %d dir %d\n" , |
265 | spcm->pcm.pcm_id, substream->stream); |
266 | |
267 | /* set hw_params */ |
268 | ret = sof_pcm_hw_params(component, |
269 | substream, params: &spcm->params[substream->stream]); |
270 | if (ret < 0) { |
271 | dev_err(component->dev, |
272 | "error: set pcm hw_params after resume\n" ); |
273 | return ret; |
274 | } |
275 | |
276 | return 0; |
277 | } |
278 | |
279 | /* |
280 | * FE dai link trigger actions are always executed in non-atomic context because |
281 | * they involve IPC's. |
282 | */ |
283 | static int sof_pcm_trigger(struct snd_soc_component *component, |
284 | struct snd_pcm_substream *substream, int cmd) |
285 | { |
286 | struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); |
287 | struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(c: component); |
288 | const struct sof_ipc_pcm_ops *pcm_ops = sof_ipc_get_ops(sdev, pcm); |
289 | struct snd_sof_pcm *spcm; |
290 | bool reset_hw_params = false; |
291 | bool ipc_first = false; |
292 | int ret = 0; |
293 | |
294 | /* nothing to do for BE */ |
295 | if (rtd->dai_link->no_pcm) |
296 | return 0; |
297 | |
298 | spcm = snd_sof_find_spcm_dai(scomp: component, rtd); |
299 | if (!spcm) |
300 | return -EINVAL; |
301 | |
302 | dev_dbg(component->dev, "pcm: trigger stream %d dir %d cmd %d\n" , |
303 | spcm->pcm.pcm_id, substream->stream, cmd); |
304 | |
305 | switch (cmd) { |
306 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
307 | ipc_first = true; |
308 | break; |
309 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
310 | if (pcm_ops && pcm_ops->ipc_first_on_start) |
311 | ipc_first = true; |
312 | break; |
313 | case SNDRV_PCM_TRIGGER_START: |
314 | if (spcm->stream[substream->stream].suspend_ignored) { |
315 | /* |
316 | * This case will be triggered when INFO_RESUME is |
317 | * not supported, no need to re-start streams that |
318 | * remained enabled in D0ix. |
319 | */ |
320 | spcm->stream[substream->stream].suspend_ignored = false; |
321 | return 0; |
322 | } |
323 | |
324 | if (pcm_ops && pcm_ops->ipc_first_on_start) |
325 | ipc_first = true; |
326 | break; |
327 | case SNDRV_PCM_TRIGGER_SUSPEND: |
328 | if (sdev->system_suspend_target == SOF_SUSPEND_S0IX && |
329 | spcm->stream[substream->stream].d0i3_compatible) { |
330 | /* |
331 | * trap the event, not sending trigger stop to |
332 | * prevent the FW pipelines from being stopped, |
333 | * and mark the flag to ignore the upcoming DAPM |
334 | * PM events. |
335 | */ |
336 | spcm->stream[substream->stream].suspend_ignored = true; |
337 | return 0; |
338 | } |
339 | |
340 | /* On suspend the DMA must be stopped in DSPless mode */ |
341 | if (sdev->dspless_mode_selected) |
342 | reset_hw_params = true; |
343 | |
344 | fallthrough; |
345 | case SNDRV_PCM_TRIGGER_STOP: |
346 | ipc_first = true; |
347 | if (pcm_ops && pcm_ops->reset_hw_params_during_stop) |
348 | reset_hw_params = true; |
349 | break; |
350 | default: |
351 | dev_err(component->dev, "Unhandled trigger cmd %d\n" , cmd); |
352 | return -EINVAL; |
353 | } |
354 | |
355 | if (!ipc_first) |
356 | snd_sof_pcm_platform_trigger(sdev, substream, cmd); |
357 | |
358 | if (pcm_ops && pcm_ops->trigger) |
359 | ret = pcm_ops->trigger(component, substream, cmd); |
360 | |
361 | switch (cmd) { |
362 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
363 | case SNDRV_PCM_TRIGGER_START: |
364 | /* invoke platform trigger to start DMA only if pcm_ops is successful */ |
365 | if (ipc_first && !ret) |
366 | snd_sof_pcm_platform_trigger(sdev, substream, cmd); |
367 | break; |
368 | case SNDRV_PCM_TRIGGER_SUSPEND: |
369 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
370 | case SNDRV_PCM_TRIGGER_STOP: |
371 | /* invoke platform trigger to stop DMA even if pcm_ops isn't set or if it failed */ |
372 | if (!pcm_ops || !pcm_ops->platform_stop_during_hw_free) |
373 | snd_sof_pcm_platform_trigger(sdev, substream, cmd); |
374 | break; |
375 | default: |
376 | break; |
377 | } |
378 | |
379 | /* free PCM if reset_hw_params is set and the STOP IPC is successful */ |
380 | if (!ret && reset_hw_params) |
381 | ret = sof_pcm_stream_free(sdev, substream, spcm, dir: substream->stream, free_widget_list: false); |
382 | |
383 | return ret; |
384 | } |
385 | |
386 | static snd_pcm_uframes_t sof_pcm_pointer(struct snd_soc_component *component, |
387 | struct snd_pcm_substream *substream) |
388 | { |
389 | struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); |
390 | struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(c: component); |
391 | const struct sof_ipc_pcm_ops *pcm_ops = sof_ipc_get_ops(sdev, pcm); |
392 | struct snd_sof_pcm *spcm; |
393 | snd_pcm_uframes_t host, dai; |
394 | int ret = -EOPNOTSUPP; |
395 | |
396 | /* nothing to do for BE */ |
397 | if (rtd->dai_link->no_pcm) |
398 | return 0; |
399 | |
400 | if (pcm_ops && pcm_ops->pointer) |
401 | ret = pcm_ops->pointer(component, substream, &host); |
402 | |
403 | if (ret != -EOPNOTSUPP) |
404 | return ret ? ret : host; |
405 | |
406 | /* use dsp ops pointer callback directly if set */ |
407 | if (sof_ops(sdev)->pcm_pointer) |
408 | return sof_ops(sdev)->pcm_pointer(sdev, substream); |
409 | |
410 | spcm = snd_sof_find_spcm_dai(scomp: component, rtd); |
411 | if (!spcm) |
412 | return -EINVAL; |
413 | |
414 | /* read position from DSP */ |
415 | host = bytes_to_frames(runtime: substream->runtime, |
416 | size: spcm->stream[substream->stream].posn.host_posn); |
417 | dai = bytes_to_frames(runtime: substream->runtime, |
418 | size: spcm->stream[substream->stream].posn.dai_posn); |
419 | |
420 | trace_sof_pcm_pointer_position(sdev, spcm, substream, dma_posn: host, dai_posn: dai); |
421 | |
422 | return host; |
423 | } |
424 | |
425 | static int sof_pcm_open(struct snd_soc_component *component, |
426 | struct snd_pcm_substream *substream) |
427 | { |
428 | struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); |
429 | struct snd_pcm_runtime *runtime = substream->runtime; |
430 | struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(c: component); |
431 | struct snd_sof_dsp_ops *ops = sof_ops(sdev); |
432 | struct snd_sof_pcm *spcm; |
433 | struct snd_soc_tplg_stream_caps *caps; |
434 | int ret; |
435 | |
436 | /* nothing to do for BE */ |
437 | if (rtd->dai_link->no_pcm) |
438 | return 0; |
439 | |
440 | spcm = snd_sof_find_spcm_dai(scomp: component, rtd); |
441 | if (!spcm) |
442 | return -EINVAL; |
443 | |
444 | dev_dbg(component->dev, "pcm: open stream %d dir %d\n" , |
445 | spcm->pcm.pcm_id, substream->stream); |
446 | |
447 | |
448 | caps = &spcm->pcm.caps[substream->stream]; |
449 | |
450 | /* set runtime config */ |
451 | runtime->hw.info = ops->hw_info; /* platform-specific */ |
452 | |
453 | /* set any runtime constraints based on topology */ |
454 | runtime->hw.formats = le64_to_cpu(caps->formats); |
455 | runtime->hw.period_bytes_min = le32_to_cpu(caps->period_size_min); |
456 | runtime->hw.period_bytes_max = le32_to_cpu(caps->period_size_max); |
457 | runtime->hw.periods_min = le32_to_cpu(caps->periods_min); |
458 | runtime->hw.periods_max = le32_to_cpu(caps->periods_max); |
459 | |
460 | /* |
461 | * caps->buffer_size_min is not used since the |
462 | * snd_pcm_hardware structure only defines buffer_bytes_max |
463 | */ |
464 | runtime->hw.buffer_bytes_max = le32_to_cpu(caps->buffer_size_max); |
465 | |
466 | dev_dbg(component->dev, "period min %zd max %zd bytes\n" , |
467 | runtime->hw.period_bytes_min, |
468 | runtime->hw.period_bytes_max); |
469 | dev_dbg(component->dev, "period count %d max %d\n" , |
470 | runtime->hw.periods_min, |
471 | runtime->hw.periods_max); |
472 | dev_dbg(component->dev, "buffer max %zd bytes\n" , |
473 | runtime->hw.buffer_bytes_max); |
474 | |
475 | /* set wait time - TODO: come from topology */ |
476 | substream->wait_time = 500; |
477 | |
478 | spcm->stream[substream->stream].posn.host_posn = 0; |
479 | spcm->stream[substream->stream].posn.dai_posn = 0; |
480 | spcm->stream[substream->stream].substream = substream; |
481 | spcm->prepared[substream->stream] = false; |
482 | |
483 | ret = snd_sof_pcm_platform_open(sdev, substream); |
484 | if (ret < 0) |
485 | dev_err(component->dev, "error: pcm open failed %d\n" , ret); |
486 | |
487 | return ret; |
488 | } |
489 | |
490 | static int sof_pcm_close(struct snd_soc_component *component, |
491 | struct snd_pcm_substream *substream) |
492 | { |
493 | struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); |
494 | struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(c: component); |
495 | struct snd_sof_pcm *spcm; |
496 | int err; |
497 | |
498 | /* nothing to do for BE */ |
499 | if (rtd->dai_link->no_pcm) |
500 | return 0; |
501 | |
502 | spcm = snd_sof_find_spcm_dai(scomp: component, rtd); |
503 | if (!spcm) |
504 | return -EINVAL; |
505 | |
506 | dev_dbg(component->dev, "pcm: close stream %d dir %d\n" , |
507 | spcm->pcm.pcm_id, substream->stream); |
508 | |
509 | err = snd_sof_pcm_platform_close(sdev, substream); |
510 | if (err < 0) { |
511 | dev_err(component->dev, "error: pcm close failed %d\n" , |
512 | err); |
513 | /* |
514 | * keep going, no point in preventing the close |
515 | * from happening |
516 | */ |
517 | } |
518 | |
519 | return 0; |
520 | } |
521 | |
522 | /* |
523 | * Pre-allocate playback/capture audio buffer pages. |
524 | * no need to explicitly release memory preallocated by sof_pcm_new in pcm_free |
525 | * snd_pcm_lib_preallocate_free_for_all() is called by the core. |
526 | */ |
527 | static int sof_pcm_new(struct snd_soc_component *component, |
528 | struct snd_soc_pcm_runtime *rtd) |
529 | { |
530 | struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(c: component); |
531 | struct snd_sof_pcm *spcm; |
532 | struct snd_pcm *pcm = rtd->pcm; |
533 | struct snd_soc_tplg_stream_caps *caps; |
534 | int stream = SNDRV_PCM_STREAM_PLAYBACK; |
535 | |
536 | /* find SOF PCM for this RTD */ |
537 | spcm = snd_sof_find_spcm_dai(scomp: component, rtd); |
538 | if (!spcm) { |
539 | dev_warn(component->dev, "warn: can't find PCM with DAI ID %d\n" , |
540 | rtd->dai_link->id); |
541 | return 0; |
542 | } |
543 | |
544 | dev_dbg(component->dev, "creating new PCM %s\n" , spcm->pcm.pcm_name); |
545 | |
546 | /* do we need to pre-allocate playback audio buffer pages */ |
547 | if (!spcm->pcm.playback) |
548 | goto capture; |
549 | |
550 | caps = &spcm->pcm.caps[stream]; |
551 | |
552 | /* pre-allocate playback audio buffer pages */ |
553 | dev_dbg(component->dev, |
554 | "spcm: allocate %s playback DMA buffer size 0x%x max 0x%x\n" , |
555 | caps->name, caps->buffer_size_min, caps->buffer_size_max); |
556 | |
557 | if (!pcm->streams[stream].substream) { |
558 | dev_err(component->dev, "error: NULL playback substream!\n" ); |
559 | return -EINVAL; |
560 | } |
561 | |
562 | snd_pcm_set_managed_buffer(substream: pcm->streams[stream].substream, |
563 | SNDRV_DMA_TYPE_DEV_SG, data: sdev->dev, |
564 | size: 0, le32_to_cpu(caps->buffer_size_max)); |
565 | capture: |
566 | stream = SNDRV_PCM_STREAM_CAPTURE; |
567 | |
568 | /* do we need to pre-allocate capture audio buffer pages */ |
569 | if (!spcm->pcm.capture) |
570 | return 0; |
571 | |
572 | caps = &spcm->pcm.caps[stream]; |
573 | |
574 | /* pre-allocate capture audio buffer pages */ |
575 | dev_dbg(component->dev, |
576 | "spcm: allocate %s capture DMA buffer size 0x%x max 0x%x\n" , |
577 | caps->name, caps->buffer_size_min, caps->buffer_size_max); |
578 | |
579 | if (!pcm->streams[stream].substream) { |
580 | dev_err(component->dev, "error: NULL capture substream!\n" ); |
581 | return -EINVAL; |
582 | } |
583 | |
584 | snd_pcm_set_managed_buffer(substream: pcm->streams[stream].substream, |
585 | SNDRV_DMA_TYPE_DEV_SG, data: sdev->dev, |
586 | size: 0, le32_to_cpu(caps->buffer_size_max)); |
587 | |
588 | return 0; |
589 | } |
590 | |
591 | /* fixup the BE DAI link to match any values from topology */ |
592 | int sof_pcm_dai_link_fixup(struct snd_soc_pcm_runtime *rtd, struct snd_pcm_hw_params *params) |
593 | { |
594 | struct snd_interval *rate = hw_param_interval(params, |
595 | SNDRV_PCM_HW_PARAM_RATE); |
596 | struct snd_interval *channels = hw_param_interval(params, |
597 | SNDRV_PCM_HW_PARAM_CHANNELS); |
598 | struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); |
599 | struct snd_soc_component *component = |
600 | snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME); |
601 | struct snd_sof_dai *dai = |
602 | snd_sof_find_dai(scomp: component, name: (char *)rtd->dai_link->name); |
603 | struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(c: component); |
604 | const struct sof_ipc_pcm_ops *pcm_ops = sof_ipc_get_ops(sdev, pcm); |
605 | |
606 | /* no topology exists for this BE, try a common configuration */ |
607 | if (!dai) { |
608 | dev_warn(component->dev, |
609 | "warning: no topology found for BE DAI %s config\n" , |
610 | rtd->dai_link->name); |
611 | |
612 | /* set 48k, stereo, 16bits by default */ |
613 | rate->min = 48000; |
614 | rate->max = 48000; |
615 | |
616 | channels->min = 2; |
617 | channels->max = 2; |
618 | |
619 | snd_mask_none(mask: fmt); |
620 | snd_mask_set_format(mask: fmt, SNDRV_PCM_FORMAT_S16_LE); |
621 | |
622 | return 0; |
623 | } |
624 | |
625 | if (pcm_ops && pcm_ops->dai_link_fixup) |
626 | return pcm_ops->dai_link_fixup(rtd, params); |
627 | |
628 | return 0; |
629 | } |
630 | EXPORT_SYMBOL(sof_pcm_dai_link_fixup); |
631 | |
632 | static int sof_pcm_probe(struct snd_soc_component *component) |
633 | { |
634 | struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(c: component); |
635 | struct snd_sof_pdata *plat_data = sdev->pdata; |
636 | const char *tplg_filename; |
637 | int ret; |
638 | |
639 | /* |
640 | * make sure the device is pm_runtime_active before loading the |
641 | * topology and initiating IPC or bus transactions |
642 | */ |
643 | ret = pm_runtime_resume_and_get(dev: component->dev); |
644 | if (ret < 0 && ret != -EACCES) |
645 | return ret; |
646 | |
647 | /* load the default topology */ |
648 | sdev->component = component; |
649 | |
650 | tplg_filename = devm_kasprintf(dev: sdev->dev, GFP_KERNEL, |
651 | fmt: "%s/%s" , |
652 | plat_data->tplg_filename_prefix, |
653 | plat_data->tplg_filename); |
654 | if (!tplg_filename) { |
655 | ret = -ENOMEM; |
656 | goto pm_error; |
657 | } |
658 | |
659 | ret = snd_sof_load_topology(scomp: component, file: tplg_filename); |
660 | if (ret < 0) |
661 | dev_err(component->dev, "error: failed to load DSP topology %d\n" , |
662 | ret); |
663 | |
664 | pm_error: |
665 | pm_runtime_mark_last_busy(dev: component->dev); |
666 | pm_runtime_put_autosuspend(dev: component->dev); |
667 | |
668 | return ret; |
669 | } |
670 | |
671 | static void sof_pcm_remove(struct snd_soc_component *component) |
672 | { |
673 | /* remove topology */ |
674 | snd_soc_tplg_component_remove(comp: component); |
675 | } |
676 | |
677 | static int sof_pcm_ack(struct snd_soc_component *component, |
678 | struct snd_pcm_substream *substream) |
679 | { |
680 | struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(c: component); |
681 | |
682 | return snd_sof_pcm_platform_ack(sdev, substream); |
683 | } |
684 | |
685 | static snd_pcm_sframes_t sof_pcm_delay(struct snd_soc_component *component, |
686 | struct snd_pcm_substream *substream) |
687 | { |
688 | struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(c: component); |
689 | const struct sof_ipc_pcm_ops *pcm_ops = sof_ipc_get_ops(sdev, pcm); |
690 | |
691 | if (pcm_ops && pcm_ops->delay) |
692 | return pcm_ops->delay(component, substream); |
693 | |
694 | return 0; |
695 | } |
696 | |
697 | void snd_sof_new_platform_drv(struct snd_sof_dev *sdev) |
698 | { |
699 | struct snd_soc_component_driver *pd = &sdev->plat_drv; |
700 | struct snd_sof_pdata *plat_data = sdev->pdata; |
701 | const char *drv_name; |
702 | |
703 | if (plat_data->machine) |
704 | drv_name = plat_data->machine->drv_name; |
705 | else if (plat_data->of_machine) |
706 | drv_name = plat_data->of_machine->drv_name; |
707 | else |
708 | drv_name = NULL; |
709 | |
710 | pd->name = "sof-audio-component" ; |
711 | pd->probe = sof_pcm_probe; |
712 | pd->remove = sof_pcm_remove; |
713 | pd->open = sof_pcm_open; |
714 | pd->close = sof_pcm_close; |
715 | pd->hw_params = sof_pcm_hw_params; |
716 | pd->prepare = sof_pcm_prepare; |
717 | pd->hw_free = sof_pcm_hw_free; |
718 | pd->trigger = sof_pcm_trigger; |
719 | pd->pointer = sof_pcm_pointer; |
720 | pd->ack = sof_pcm_ack; |
721 | pd->delay = sof_pcm_delay; |
722 | |
723 | #if IS_ENABLED(CONFIG_SND_SOC_SOF_COMPRESS) |
724 | pd->compress_ops = &sof_compressed_ops; |
725 | #endif |
726 | |
727 | pd->pcm_construct = sof_pcm_new; |
728 | pd->ignore_machine = drv_name; |
729 | pd->be_pcm_base = SOF_BE_PCM_BASE; |
730 | pd->use_dai_pcm_id = true; |
731 | pd->topology_name_prefix = "sof" ; |
732 | |
733 | /* increment module refcount when a pcm is opened */ |
734 | pd->module_get_upon_open = 1; |
735 | |
736 | pd->legacy_dai_naming = 1; |
737 | |
738 | /* |
739 | * The fixup is only needed when the DSP is in use as with the DSPless |
740 | * mode we are directly using the audio interface |
741 | */ |
742 | if (!sdev->dspless_mode_selected) |
743 | pd->be_hw_params_fixup = sof_pcm_dai_link_fixup; |
744 | } |
745 | |