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868bd00f LG |
1 | // SPDX-License-Identifier: (GPL-2.0 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 "sof-priv.h" | |
17 | #include "ops.h" | |
18 | ||
19 | #define DRV_NAME "sof-audio-component" | |
20 | ||
21 | /* Create DMA buffer page table for DSP */ | |
22 | static int create_page_table(struct snd_pcm_substream *substream, | |
23 | unsigned char *dma_area, size_t size) | |
24 | { | |
25 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
26 | struct snd_soc_component *component = | |
27 | snd_soc_rtdcom_lookup(rtd, DRV_NAME); | |
28 | struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); | |
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(sdev, rtd); | |
34 | if (!spcm) | |
35 | return -EINVAL; | |
36 | ||
37 | return snd_sof_create_page_table(sdev, dmab, | |
38 | spcm->stream[stream].page_table.area, size); | |
39 | } | |
40 | ||
41 | static int sof_pcm_dsp_params(struct snd_sof_pcm *spcm, struct snd_pcm_substream *substream, | |
42 | const struct sof_ipc_pcm_params_reply *reply) | |
43 | { | |
44 | struct snd_sof_dev *sdev = spcm->sdev; | |
45 | /* validate offset */ | |
46 | int ret = snd_sof_ipc_pcm_params(sdev, substream, reply); | |
47 | ||
48 | if (ret < 0) | |
49 | dev_err(sdev->dev, "error: got wrong reply for PCM %d\n", | |
50 | spcm->pcm.pcm_id); | |
51 | ||
52 | return ret; | |
53 | } | |
54 | ||
e2803e61 KJ |
55 | /* |
56 | * sof pcm period elapse work | |
57 | */ | |
58 | static void sof_pcm_period_elapsed_work(struct work_struct *work) | |
59 | { | |
60 | struct snd_sof_pcm_stream *sps = | |
61 | container_of(work, struct snd_sof_pcm_stream, | |
62 | period_elapsed_work); | |
63 | ||
64 | snd_pcm_period_elapsed(sps->substream); | |
65 | } | |
66 | ||
67 | /* | |
68 | * sof pcm period elapse, this could be called at irq thread context. | |
69 | */ | |
70 | void snd_sof_pcm_period_elapsed(struct snd_pcm_substream *substream) | |
71 | { | |
72 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
73 | struct snd_soc_component *component = | |
74 | snd_soc_rtdcom_lookup(rtd, DRV_NAME); | |
75 | struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); | |
76 | struct snd_sof_pcm *spcm; | |
77 | ||
78 | spcm = snd_sof_find_spcm_dai(sdev, rtd); | |
79 | if (!spcm) { | |
80 | dev_err(sdev->dev, | |
81 | "error: period elapsed for unknown stream!\n"); | |
82 | return; | |
83 | } | |
84 | ||
85 | /* | |
86 | * snd_pcm_period_elapsed() can be called in interrupt context | |
87 | * before IRQ_HANDLED is returned. Inside snd_pcm_period_elapsed(), | |
88 | * when the PCM is done draining or xrun happened, a STOP IPC will | |
89 | * then be sent and this IPC will hit IPC timeout. | |
90 | * To avoid sending IPC before the previous IPC is handled, we | |
91 | * schedule delayed work here to call the snd_pcm_period_elapsed(). | |
92 | */ | |
93 | schedule_work(&spcm->stream[substream->stream].period_elapsed_work); | |
94 | } | |
95 | EXPORT_SYMBOL(snd_sof_pcm_period_elapsed); | |
96 | ||
868bd00f LG |
97 | /* this may get called several times by oss emulation */ |
98 | static int sof_pcm_hw_params(struct snd_pcm_substream *substream, | |
99 | struct snd_pcm_hw_params *params) | |
100 | { | |
101 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
102 | struct snd_pcm_runtime *runtime = substream->runtime; | |
103 | struct snd_soc_component *component = | |
104 | snd_soc_rtdcom_lookup(rtd, DRV_NAME); | |
105 | struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); | |
106 | struct snd_sof_pcm *spcm; | |
107 | struct sof_ipc_pcm_params pcm; | |
108 | struct sof_ipc_pcm_params_reply ipc_params_reply; | |
109 | int ret; | |
110 | ||
111 | /* nothing to do for BE */ | |
112 | if (rtd->dai_link->no_pcm) | |
113 | return 0; | |
114 | ||
115 | spcm = snd_sof_find_spcm_dai(sdev, rtd); | |
116 | if (!spcm) | |
117 | return -EINVAL; | |
118 | ||
119 | dev_dbg(sdev->dev, "pcm: hw params stream %d dir %d\n", | |
120 | spcm->pcm.pcm_id, substream->stream); | |
121 | ||
122 | memset(&pcm, 0, sizeof(pcm)); | |
123 | ||
124 | /* allocate audio buffer pages */ | |
125 | ret = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params)); | |
126 | if (ret < 0) { | |
127 | dev_err(sdev->dev, "error: could not allocate %d bytes for PCM %d\n", | |
128 | params_buffer_bytes(params), spcm->pcm.pcm_id); | |
129 | return ret; | |
130 | } | |
131 | if (ret) { | |
132 | /* | |
133 | * ret == 1 means the buffer is changed | |
134 | * create compressed page table for audio firmware | |
135 | * ret == 0 means the buffer is not changed | |
136 | * so no need to regenerate the page table | |
137 | */ | |
138 | ret = create_page_table(substream, runtime->dma_area, | |
139 | runtime->dma_bytes); | |
140 | if (ret < 0) | |
141 | return ret; | |
142 | } | |
143 | ||
144 | /* number of pages should be rounded up */ | |
145 | pcm.params.buffer.pages = PFN_UP(runtime->dma_bytes); | |
146 | ||
147 | /* set IPC PCM parameters */ | |
148 | pcm.hdr.size = sizeof(pcm); | |
149 | pcm.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_PARAMS; | |
150 | pcm.comp_id = spcm->stream[substream->stream].comp_id; | |
151 | pcm.params.hdr.size = sizeof(pcm.params); | |
152 | pcm.params.buffer.phy_addr = | |
153 | spcm->stream[substream->stream].page_table.addr; | |
154 | pcm.params.buffer.size = runtime->dma_bytes; | |
155 | pcm.params.direction = substream->stream; | |
156 | pcm.params.sample_valid_bytes = params_width(params) >> 3; | |
157 | pcm.params.buffer_fmt = SOF_IPC_BUFFER_INTERLEAVED; | |
158 | pcm.params.rate = params_rate(params); | |
159 | pcm.params.channels = params_channels(params); | |
160 | pcm.params.host_period_bytes = params_period_bytes(params); | |
161 | ||
162 | /* container size */ | |
163 | ret = snd_pcm_format_physical_width(params_format(params)); | |
164 | if (ret < 0) | |
165 | return ret; | |
166 | pcm.params.sample_container_bytes = ret >> 3; | |
167 | ||
168 | /* format */ | |
169 | switch (params_format(params)) { | |
170 | case SNDRV_PCM_FORMAT_S16: | |
171 | pcm.params.frame_fmt = SOF_IPC_FRAME_S16_LE; | |
172 | break; | |
173 | case SNDRV_PCM_FORMAT_S24: | |
174 | pcm.params.frame_fmt = SOF_IPC_FRAME_S24_4LE; | |
175 | break; | |
176 | case SNDRV_PCM_FORMAT_S32: | |
177 | pcm.params.frame_fmt = SOF_IPC_FRAME_S32_LE; | |
178 | break; | |
179 | case SNDRV_PCM_FORMAT_FLOAT: | |
180 | pcm.params.frame_fmt = SOF_IPC_FRAME_FLOAT; | |
181 | break; | |
182 | default: | |
183 | return -EINVAL; | |
184 | } | |
185 | ||
186 | /* firmware already configured host stream */ | |
187 | ret = snd_sof_pcm_platform_hw_params(sdev, | |
188 | substream, | |
189 | params, | |
190 | &pcm.params); | |
191 | if (ret < 0) { | |
192 | dev_err(sdev->dev, "error: platform hw params failed\n"); | |
193 | return ret; | |
194 | } | |
195 | ||
196 | dev_dbg(sdev->dev, "stream_tag %d", pcm.params.stream_tag); | |
197 | ||
198 | /* send IPC to the DSP */ | |
199 | ret = sof_ipc_tx_message(sdev->ipc, pcm.hdr.cmd, &pcm, sizeof(pcm), | |
200 | &ipc_params_reply, sizeof(ipc_params_reply)); | |
201 | if (ret < 0) { | |
202 | dev_err(sdev->dev, "error: hw params ipc failed for stream %d\n", | |
203 | pcm.params.stream_tag); | |
204 | return ret; | |
205 | } | |
206 | ||
207 | ret = sof_pcm_dsp_params(spcm, substream, &ipc_params_reply); | |
208 | if (ret < 0) | |
209 | return ret; | |
210 | ||
04c80277 KV |
211 | spcm->prepared[substream->stream] = true; |
212 | ||
868bd00f LG |
213 | /* save pcm hw_params */ |
214 | memcpy(&spcm->params[substream->stream], params, sizeof(*params)); | |
215 | ||
216 | return ret; | |
217 | } | |
218 | ||
a49b6871 KV |
219 | static int sof_pcm_dsp_pcm_free(struct snd_pcm_substream *substream, |
220 | struct snd_sof_dev *sdev, | |
221 | struct snd_sof_pcm *spcm) | |
222 | { | |
223 | struct sof_ipc_stream stream; | |
224 | struct sof_ipc_reply reply; | |
225 | int ret; | |
226 | ||
227 | stream.hdr.size = sizeof(stream); | |
228 | stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_FREE; | |
229 | stream.comp_id = spcm->stream[substream->stream].comp_id; | |
230 | ||
231 | /* send IPC to the DSP */ | |
232 | ret = sof_ipc_tx_message(sdev->ipc, stream.hdr.cmd, &stream, | |
233 | sizeof(stream), &reply, sizeof(reply)); | |
234 | if (!ret) | |
235 | spcm->prepared[substream->stream] = false; | |
236 | ||
237 | return ret; | |
238 | } | |
239 | ||
868bd00f LG |
240 | static int sof_pcm_hw_free(struct snd_pcm_substream *substream) |
241 | { | |
242 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
243 | struct snd_soc_component *component = | |
244 | snd_soc_rtdcom_lookup(rtd, DRV_NAME); | |
245 | struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); | |
246 | struct snd_sof_pcm *spcm; | |
868bd00f LG |
247 | int ret; |
248 | ||
249 | /* nothing to do for BE */ | |
250 | if (rtd->dai_link->no_pcm) | |
251 | return 0; | |
252 | ||
253 | spcm = snd_sof_find_spcm_dai(sdev, rtd); | |
254 | if (!spcm) | |
255 | return -EINVAL; | |
256 | ||
04c80277 KV |
257 | if (!spcm->prepared[substream->stream]) |
258 | return 0; | |
259 | ||
868bd00f LG |
260 | dev_dbg(sdev->dev, "pcm: free stream %d dir %d\n", spcm->pcm.pcm_id, |
261 | substream->stream); | |
262 | ||
a49b6871 | 263 | ret = sof_pcm_dsp_pcm_free(substream, sdev, spcm); |
868bd00f LG |
264 | |
265 | snd_pcm_lib_free_pages(substream); | |
e2803e61 KJ |
266 | |
267 | cancel_work_sync(&spcm->stream[substream->stream].period_elapsed_work); | |
268 | ||
93146bc2 RS |
269 | if (ret < 0) |
270 | return ret; | |
271 | ||
272 | ret = snd_sof_pcm_platform_hw_free(sdev, substream); | |
273 | if (ret < 0) | |
274 | dev_err(sdev->dev, "error: platform hw free failed\n"); | |
275 | ||
868bd00f LG |
276 | return ret; |
277 | } | |
278 | ||
279 | static int sof_pcm_prepare(struct snd_pcm_substream *substream) | |
280 | { | |
281 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
282 | struct snd_soc_component *component = | |
283 | snd_soc_rtdcom_lookup(rtd, DRV_NAME); | |
284 | struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); | |
285 | struct snd_sof_pcm *spcm; | |
286 | int ret; | |
287 | ||
288 | /* nothing to do for BE */ | |
289 | if (rtd->dai_link->no_pcm) | |
290 | return 0; | |
291 | ||
292 | spcm = snd_sof_find_spcm_dai(sdev, rtd); | |
293 | if (!spcm) | |
294 | return -EINVAL; | |
295 | ||
04c80277 | 296 | if (spcm->prepared[substream->stream]) |
868bd00f LG |
297 | return 0; |
298 | ||
299 | dev_dbg(sdev->dev, "pcm: prepare stream %d dir %d\n", spcm->pcm.pcm_id, | |
300 | substream->stream); | |
301 | ||
302 | /* set hw_params */ | |
303 | ret = sof_pcm_hw_params(substream, &spcm->params[substream->stream]); | |
304 | if (ret < 0) { | |
305 | dev_err(sdev->dev, "error: set pcm hw_params after resume\n"); | |
306 | return ret; | |
307 | } | |
308 | ||
309 | return 0; | |
310 | } | |
311 | ||
312 | /* | |
313 | * FE dai link trigger actions are always executed in non-atomic context because | |
314 | * they involve IPC's. | |
315 | */ | |
316 | static int sof_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
317 | { | |
318 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
319 | struct snd_soc_component *component = | |
320 | snd_soc_rtdcom_lookup(rtd, DRV_NAME); | |
321 | struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); | |
322 | struct snd_sof_pcm *spcm; | |
323 | struct sof_ipc_stream stream; | |
324 | struct sof_ipc_reply reply; | |
04c80277 | 325 | bool reset_hw_params = false; |
868bd00f LG |
326 | int ret; |
327 | ||
328 | /* nothing to do for BE */ | |
329 | if (rtd->dai_link->no_pcm) | |
330 | return 0; | |
331 | ||
332 | spcm = snd_sof_find_spcm_dai(sdev, rtd); | |
333 | if (!spcm) | |
334 | return -EINVAL; | |
335 | ||
336 | dev_dbg(sdev->dev, "pcm: trigger stream %d dir %d cmd %d\n", | |
337 | spcm->pcm.pcm_id, substream->stream, cmd); | |
338 | ||
339 | stream.hdr.size = sizeof(stream); | |
340 | stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG; | |
341 | stream.comp_id = spcm->stream[substream->stream].comp_id; | |
342 | ||
343 | switch (cmd) { | |
344 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
345 | stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_PAUSE; | |
346 | break; | |
347 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
348 | stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_RELEASE; | |
349 | break; | |
350 | case SNDRV_PCM_TRIGGER_RESUME: | |
351 | /* set up hw_params */ | |
352 | ret = sof_pcm_prepare(substream); | |
353 | if (ret < 0) { | |
354 | dev_err(sdev->dev, | |
355 | "error: failed to set up hw_params upon resume\n"); | |
356 | return ret; | |
357 | } | |
358 | ||
359 | /* fallthrough */ | |
360 | case SNDRV_PCM_TRIGGER_START: | |
361 | stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_START; | |
362 | break; | |
363 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
364 | case SNDRV_PCM_TRIGGER_STOP: | |
365 | stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_STOP; | |
04c80277 | 366 | reset_hw_params = true; |
868bd00f LG |
367 | break; |
368 | default: | |
369 | dev_err(sdev->dev, "error: unhandled trigger cmd %d\n", cmd); | |
370 | return -EINVAL; | |
371 | } | |
372 | ||
373 | snd_sof_pcm_platform_trigger(sdev, substream, cmd); | |
374 | ||
375 | /* send IPC to the DSP */ | |
376 | ret = sof_ipc_tx_message(sdev->ipc, stream.hdr.cmd, &stream, | |
377 | sizeof(stream), &reply, sizeof(reply)); | |
378 | ||
a49b6871 KV |
379 | if (!ret && reset_hw_params) |
380 | ret = sof_pcm_dsp_pcm_free(substream, sdev, spcm); | |
868bd00f | 381 | |
a49b6871 | 382 | return ret; |
868bd00f LG |
383 | } |
384 | ||
385 | static snd_pcm_uframes_t sof_pcm_pointer(struct snd_pcm_substream *substream) | |
386 | { | |
387 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
388 | struct snd_soc_component *component = | |
389 | snd_soc_rtdcom_lookup(rtd, DRV_NAME); | |
390 | struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); | |
391 | struct snd_sof_pcm *spcm; | |
392 | snd_pcm_uframes_t host, dai; | |
393 | ||
394 | /* nothing to do for BE */ | |
395 | if (rtd->dai_link->no_pcm) | |
396 | return 0; | |
397 | ||
398 | /* use dsp ops pointer callback directly if set */ | |
399 | if (sof_ops(sdev)->pcm_pointer) | |
400 | return sof_ops(sdev)->pcm_pointer(sdev, substream); | |
401 | ||
402 | spcm = snd_sof_find_spcm_dai(sdev, rtd); | |
403 | if (!spcm) | |
404 | return -EINVAL; | |
405 | ||
406 | /* read position from DSP */ | |
407 | host = bytes_to_frames(substream->runtime, | |
408 | spcm->stream[substream->stream].posn.host_posn); | |
409 | dai = bytes_to_frames(substream->runtime, | |
410 | spcm->stream[substream->stream].posn.dai_posn); | |
411 | ||
412 | dev_dbg(sdev->dev, "PCM: stream %d dir %d DMA position %lu DAI position %lu\n", | |
413 | spcm->pcm.pcm_id, substream->stream, host, dai); | |
414 | ||
415 | return host; | |
416 | } | |
417 | ||
418 | static int sof_pcm_open(struct snd_pcm_substream *substream) | |
419 | { | |
420 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
421 | struct snd_pcm_runtime *runtime = substream->runtime; | |
422 | struct snd_soc_component *component = | |
423 | snd_soc_rtdcom_lookup(rtd, DRV_NAME); | |
424 | struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); | |
425 | struct snd_sof_pcm *spcm; | |
426 | struct snd_soc_tplg_stream_caps *caps; | |
427 | int ret; | |
868bd00f LG |
428 | |
429 | /* nothing to do for BE */ | |
430 | if (rtd->dai_link->no_pcm) | |
431 | return 0; | |
432 | ||
433 | spcm = snd_sof_find_spcm_dai(sdev, rtd); | |
434 | if (!spcm) | |
435 | return -EINVAL; | |
436 | ||
437 | dev_dbg(sdev->dev, "pcm: open stream %d dir %d\n", spcm->pcm.pcm_id, | |
438 | substream->stream); | |
439 | ||
fab4edf4 PLB |
440 | INIT_WORK(&spcm->stream[substream->stream].period_elapsed_work, |
441 | sof_pcm_period_elapsed_work); | |
868bd00f LG |
442 | |
443 | caps = &spcm->pcm.caps[substream->stream]; | |
444 | ||
868bd00f LG |
445 | /* set any runtime constraints based on topology */ |
446 | snd_pcm_hw_constraint_step(substream->runtime, 0, | |
447 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
448 | le32_to_cpu(caps->period_size_min)); | |
449 | snd_pcm_hw_constraint_step(substream->runtime, 0, | |
450 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
451 | le32_to_cpu(caps->period_size_min)); | |
452 | ||
453 | /* set runtime config */ | |
454 | runtime->hw.info = SNDRV_PCM_INFO_MMAP | | |
455 | SNDRV_PCM_INFO_MMAP_VALID | | |
456 | SNDRV_PCM_INFO_INTERLEAVED | | |
457 | SNDRV_PCM_INFO_PAUSE | | |
458 | SNDRV_PCM_INFO_NO_PERIOD_WAKEUP; | |
459 | runtime->hw.formats = le64_to_cpu(caps->formats); | |
460 | runtime->hw.period_bytes_min = le32_to_cpu(caps->period_size_min); | |
461 | runtime->hw.period_bytes_max = le32_to_cpu(caps->period_size_max); | |
462 | runtime->hw.periods_min = le32_to_cpu(caps->periods_min); | |
463 | runtime->hw.periods_max = le32_to_cpu(caps->periods_max); | |
464 | ||
465 | /* | |
466 | * caps->buffer_size_min is not used since the | |
467 | * snd_pcm_hardware structure only defines buffer_bytes_max | |
468 | */ | |
469 | runtime->hw.buffer_bytes_max = le32_to_cpu(caps->buffer_size_max); | |
470 | ||
471 | dev_dbg(sdev->dev, "period min %zd max %zd bytes\n", | |
472 | runtime->hw.period_bytes_min, | |
473 | runtime->hw.period_bytes_max); | |
474 | dev_dbg(sdev->dev, "period count %d max %d\n", | |
475 | runtime->hw.periods_min, | |
476 | runtime->hw.periods_max); | |
477 | dev_dbg(sdev->dev, "buffer max %zd bytes\n", | |
478 | runtime->hw.buffer_bytes_max); | |
479 | ||
480 | /* set wait time - TODO: come from topology */ | |
481 | substream->wait_time = 500; | |
482 | ||
483 | spcm->stream[substream->stream].posn.host_posn = 0; | |
484 | spcm->stream[substream->stream].posn.dai_posn = 0; | |
485 | spcm->stream[substream->stream].substream = substream; | |
04c80277 | 486 | spcm->prepared[substream->stream] = false; |
868bd00f LG |
487 | |
488 | ret = snd_sof_pcm_platform_open(sdev, substream); | |
14a2212d RS |
489 | if (ret < 0) |
490 | dev_err(sdev->dev, "error: pcm open failed %d\n", ret); | |
868bd00f LG |
491 | |
492 | return ret; | |
493 | } | |
494 | ||
495 | static int sof_pcm_close(struct snd_pcm_substream *substream) | |
496 | { | |
497 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
498 | struct snd_soc_component *component = | |
499 | snd_soc_rtdcom_lookup(rtd, DRV_NAME); | |
500 | struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); | |
501 | struct snd_sof_pcm *spcm; | |
502 | int err; | |
503 | ||
504 | /* nothing to do for BE */ | |
505 | if (rtd->dai_link->no_pcm) | |
506 | return 0; | |
507 | ||
508 | spcm = snd_sof_find_spcm_dai(sdev, rtd); | |
509 | if (!spcm) | |
510 | return -EINVAL; | |
511 | ||
512 | dev_dbg(sdev->dev, "pcm: close stream %d dir %d\n", spcm->pcm.pcm_id, | |
513 | substream->stream); | |
514 | ||
515 | err = snd_sof_pcm_platform_close(sdev, substream); | |
516 | if (err < 0) { | |
517 | dev_err(sdev->dev, "error: pcm close failed %d\n", | |
518 | err); | |
519 | /* | |
520 | * keep going, no point in preventing the close | |
521 | * from happening | |
522 | */ | |
523 | } | |
524 | ||
868bd00f LG |
525 | return 0; |
526 | } | |
527 | ||
528 | static struct snd_pcm_ops sof_pcm_ops = { | |
529 | .open = sof_pcm_open, | |
530 | .close = sof_pcm_close, | |
531 | .ioctl = snd_pcm_lib_ioctl, | |
532 | .hw_params = sof_pcm_hw_params, | |
533 | .prepare = sof_pcm_prepare, | |
534 | .hw_free = sof_pcm_hw_free, | |
535 | .trigger = sof_pcm_trigger, | |
536 | .pointer = sof_pcm_pointer, | |
537 | .page = snd_pcm_sgbuf_ops_page, | |
538 | }; | |
539 | ||
540 | /* | |
541 | * Pre-allocate playback/capture audio buffer pages. | |
542 | * no need to explicitly release memory preallocated by sof_pcm_new in pcm_free | |
543 | * snd_pcm_lib_preallocate_free_for_all() is called by the core. | |
544 | */ | |
545 | static int sof_pcm_new(struct snd_soc_pcm_runtime *rtd) | |
546 | { | |
547 | struct snd_soc_component *component = | |
548 | snd_soc_rtdcom_lookup(rtd, DRV_NAME); | |
549 | struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); | |
550 | struct snd_sof_pcm *spcm; | |
551 | struct snd_pcm *pcm = rtd->pcm; | |
552 | struct snd_soc_tplg_stream_caps *caps; | |
553 | int stream = SNDRV_PCM_STREAM_PLAYBACK; | |
554 | ||
555 | /* find SOF PCM for this RTD */ | |
556 | spcm = snd_sof_find_spcm_dai(sdev, rtd); | |
557 | if (!spcm) { | |
558 | dev_warn(sdev->dev, "warn: can't find PCM with DAI ID %d\n", | |
559 | rtd->dai_link->id); | |
560 | return 0; | |
561 | } | |
562 | ||
563 | dev_dbg(sdev->dev, "creating new PCM %s\n", spcm->pcm.pcm_name); | |
564 | ||
565 | /* do we need to pre-allocate playback audio buffer pages */ | |
566 | if (!spcm->pcm.playback) | |
567 | goto capture; | |
568 | ||
569 | caps = &spcm->pcm.caps[stream]; | |
570 | ||
571 | /* pre-allocate playback audio buffer pages */ | |
572 | dev_dbg(sdev->dev, "spcm: allocate %s playback DMA buffer size 0x%x max 0x%x\n", | |
573 | caps->name, caps->buffer_size_min, caps->buffer_size_max); | |
574 | ||
575 | snd_pcm_lib_preallocate_pages(pcm->streams[stream].substream, | |
576 | SNDRV_DMA_TYPE_DEV_SG, sdev->dev, | |
577 | le32_to_cpu(caps->buffer_size_min), | |
578 | le32_to_cpu(caps->buffer_size_max)); | |
579 | capture: | |
580 | stream = SNDRV_PCM_STREAM_CAPTURE; | |
581 | ||
582 | /* do we need to pre-allocate capture audio buffer pages */ | |
583 | if (!spcm->pcm.capture) | |
584 | return 0; | |
585 | ||
586 | caps = &spcm->pcm.caps[stream]; | |
587 | ||
588 | /* pre-allocate capture audio buffer pages */ | |
589 | dev_dbg(sdev->dev, "spcm: allocate %s capture DMA buffer size 0x%x max 0x%x\n", | |
590 | caps->name, caps->buffer_size_min, caps->buffer_size_max); | |
591 | ||
592 | snd_pcm_lib_preallocate_pages(pcm->streams[stream].substream, | |
593 | SNDRV_DMA_TYPE_DEV_SG, sdev->dev, | |
594 | le32_to_cpu(caps->buffer_size_min), | |
595 | le32_to_cpu(caps->buffer_size_max)); | |
596 | ||
597 | return 0; | |
598 | } | |
599 | ||
600 | /* fixup the BE DAI link to match any values from topology */ | |
601 | static int sof_pcm_dai_link_fixup(struct snd_soc_pcm_runtime *rtd, | |
602 | struct snd_pcm_hw_params *params) | |
603 | { | |
604 | struct snd_interval *rate = hw_param_interval(params, | |
605 | SNDRV_PCM_HW_PARAM_RATE); | |
606 | struct snd_interval *channels = hw_param_interval(params, | |
607 | SNDRV_PCM_HW_PARAM_CHANNELS); | |
608 | struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
609 | struct snd_soc_component *component = | |
610 | snd_soc_rtdcom_lookup(rtd, DRV_NAME); | |
611 | struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); | |
612 | struct snd_sof_dai *dai = | |
613 | snd_sof_find_dai(sdev, (char *)rtd->dai_link->name); | |
614 | ||
615 | /* no topology exists for this BE, try a common configuration */ | |
616 | if (!dai) { | |
617 | dev_warn(sdev->dev, "warning: no topology found for BE DAI %s config\n", | |
618 | rtd->dai_link->name); | |
619 | ||
620 | /* set 48k, stereo, 16bits by default */ | |
621 | rate->min = 48000; | |
622 | rate->max = 48000; | |
623 | ||
624 | channels->min = 2; | |
625 | channels->max = 2; | |
626 | ||
627 | snd_mask_none(fmt); | |
628 | snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE); | |
629 | ||
630 | return 0; | |
631 | } | |
632 | ||
633 | /* read format from topology */ | |
634 | snd_mask_none(fmt); | |
635 | ||
636 | switch (dai->comp_dai.config.frame_fmt) { | |
637 | case SOF_IPC_FRAME_S16_LE: | |
638 | snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE); | |
639 | break; | |
640 | case SOF_IPC_FRAME_S24_4LE: | |
641 | snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE); | |
642 | break; | |
643 | case SOF_IPC_FRAME_S32_LE: | |
644 | snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S32_LE); | |
645 | break; | |
646 | default: | |
647 | dev_err(sdev->dev, "error: No available DAI format!\n"); | |
648 | return -EINVAL; | |
649 | } | |
650 | ||
651 | /* read rate and channels from topology */ | |
652 | switch (dai->dai_config->type) { | |
653 | case SOF_DAI_INTEL_SSP: | |
654 | rate->min = dai->dai_config->ssp.fsync_rate; | |
655 | rate->max = dai->dai_config->ssp.fsync_rate; | |
656 | channels->min = dai->dai_config->ssp.tdm_slots; | |
657 | channels->max = dai->dai_config->ssp.tdm_slots; | |
658 | ||
659 | dev_dbg(sdev->dev, | |
660 | "rate_min: %d rate_max: %d\n", rate->min, rate->max); | |
661 | dev_dbg(sdev->dev, | |
662 | "channels_min: %d channels_max: %d\n", | |
663 | channels->min, channels->max); | |
664 | ||
665 | break; | |
666 | case SOF_DAI_INTEL_DMIC: | |
667 | /* DMIC only supports 16 or 32 bit formats */ | |
668 | if (dai->comp_dai.config.frame_fmt == SOF_IPC_FRAME_S24_4LE) { | |
669 | dev_err(sdev->dev, | |
670 | "error: invalid fmt %d for DAI type %d\n", | |
671 | dai->comp_dai.config.frame_fmt, | |
672 | dai->dai_config->type); | |
673 | } | |
674 | break; | |
675 | case SOF_DAI_INTEL_HDA: | |
676 | /* do nothing for HDA dai_link */ | |
677 | break; | |
6e3360cd PLB |
678 | case SOF_DAI_INTEL_ALH: |
679 | /* do nothing for ALH dai_link */ | |
680 | break; | |
868bd00f LG |
681 | default: |
682 | dev_err(sdev->dev, "error: invalid DAI type %d\n", | |
683 | dai->dai_config->type); | |
684 | break; | |
685 | } | |
686 | ||
687 | return 0; | |
688 | } | |
689 | ||
690 | static int sof_pcm_probe(struct snd_soc_component *component) | |
691 | { | |
692 | struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); | |
693 | struct snd_sof_pdata *plat_data = sdev->pdata; | |
694 | const char *tplg_filename; | |
695 | int ret; | |
696 | ||
697 | /* load the default topology */ | |
698 | sdev->component = component; | |
699 | ||
700 | tplg_filename = devm_kasprintf(sdev->dev, GFP_KERNEL, | |
701 | "%s/%s", | |
702 | plat_data->tplg_filename_prefix, | |
703 | plat_data->tplg_filename); | |
704 | if (!tplg_filename) | |
705 | return -ENOMEM; | |
706 | ||
707 | ret = snd_sof_load_topology(sdev, tplg_filename); | |
708 | if (ret < 0) { | |
709 | dev_err(sdev->dev, "error: failed to load DSP topology %d\n", | |
710 | ret); | |
711 | return ret; | |
712 | } | |
713 | ||
714 | /* | |
715 | * Some platforms in SOF, ex: BYT, may not have their platform PM | |
716 | * callbacks set. Increment the usage count so as to | |
717 | * prevent the device from entering runtime suspend. | |
718 | */ | |
719 | if (!sof_ops(sdev)->runtime_suspend || !sof_ops(sdev)->runtime_resume) | |
720 | pm_runtime_get_noresume(sdev->dev); | |
721 | ||
722 | return ret; | |
723 | } | |
724 | ||
725 | static void sof_pcm_remove(struct snd_soc_component *component) | |
726 | { | |
727 | /* remove topology */ | |
728 | snd_soc_tplg_component_remove(component, SND_SOC_TPLG_INDEX_ALL); | |
729 | } | |
730 | ||
731 | void snd_sof_new_platform_drv(struct snd_sof_dev *sdev) | |
732 | { | |
733 | struct snd_soc_component_driver *pd = &sdev->plat_drv; | |
734 | struct snd_sof_pdata *plat_data = sdev->pdata; | |
735 | const char *drv_name; | |
736 | ||
737 | drv_name = plat_data->machine->drv_name; | |
738 | ||
739 | pd->name = "sof-audio-component"; | |
740 | pd->probe = sof_pcm_probe; | |
741 | pd->remove = sof_pcm_remove; | |
742 | pd->ops = &sof_pcm_ops; | |
743 | #if IS_ENABLED(CONFIG_SND_SOC_SOF_COMPRESS) | |
744 | pd->compr_ops = &sof_compressed_ops; | |
745 | #endif | |
746 | pd->pcm_new = sof_pcm_new; | |
747 | pd->ignore_machine = drv_name; | |
748 | pd->be_hw_params_fixup = sof_pcm_dai_link_fixup; | |
749 | pd->be_pcm_base = SOF_BE_PCM_BASE; | |
750 | pd->use_dai_pcm_id = true; | |
751 | pd->topology_name_prefix = "sof"; | |
752 | ||
753 | /* increment module refcount when a pcm is opened */ | |
754 | pd->module_get_upon_open = 1; | |
755 | } |