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ASoC: Intel: Get correct usage_count value to load firmware
[linux-2.6-block.git] / sound / soc / intel / atom / sst / sst_drv_interface.c
CommitLineData
cc547054
VK		 1/*
2 * sst_drv_interface.c - Intel SST Driver for audio engine
3 *
4 * Copyright (C) 2008-14 Intel Corp
5 * Authors: Vinod Koul <vinod.koul@intel.com>
6 * Harsha Priya <priya.harsha@intel.com>
7 * Dharageswari R <dharageswari.r@intel.com)
8 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; version 2 of the License.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
20 */
21#include <linux/delay.h>
22#include <linux/pci.h>
23#include <linux/fs.h>
24#include <linux/firmware.h>
25#include <linux/pm_runtime.h>
26#include <linux/pm_qos.h>
27#include <linux/math64.h>
28#include <sound/core.h>
29#include <sound/pcm.h>
30#include <sound/soc.h>
31#include <sound/compress_driver.h>
32#include <asm/platform_sst_audio.h>
33#include "../sst-mfld-platform.h"
34#include "sst.h"
b97169da 35#include "../../common/sst-dsp.h"
cc547054
VK		 36
37
38
39#define NUM_CODEC 2
40#define MIN_FRAGMENT 2
41#define MAX_FRAGMENT 4
42#define MIN_FRAGMENT_SIZE (50 * 1024)
43#define MAX_FRAGMENT_SIZE (1024 * 1024)
44#define SST_GET_BYTES_PER_SAMPLE(pcm_wd_sz) (((pcm_wd_sz + 15) >> 4) << 1)
412efa73
SS		 45#ifdef CONFIG_PM
46#define GET_USAGE_COUNT(dev) (atomic_read(&dev->power.usage_count))
47#else
48#define GET_USAGE_COUNT(dev) 1
49#endif
cc547054
VK		 50
51int free_stream_context(struct intel_sst_drv *ctx, unsigned int str_id)
52{
53 struct stream_info *stream;
54 int ret = 0;
55
56 stream = get_stream_info(ctx, str_id);
57 if (stream) {
58 /* str_id is valid, so stream is alloacted */
59 ret = sst_free_stream(ctx, str_id);
60 if (ret)
61 sst_clean_stream(&ctx->streams[str_id]);
62 return ret;
790b4075
VK		 63 } else {
64 dev_err(ctx->dev, "we tried to free stream context %d which was freed!!!\n", str_id);
cc547054
VK		 65 }
66 return ret;
67}
68
69int sst_get_stream_allocated(struct intel_sst_drv *ctx,
70 struct snd_sst_params *str_param,
71 struct snd_sst_lib_download **lib_dnld)
72{
73 int retval;
74
75 retval = ctx->ops->alloc_stream(ctx, str_param);
76 if (retval > 0)
77 dev_dbg(ctx->dev, "Stream allocated %d\n", retval);
78 return retval;
79
80}
81
82/*
83 * sst_get_sfreq - this function returns the frequency of the stream
84 *
85 * @str_param : stream params
86 */
87int sst_get_sfreq(struct snd_sst_params *str_param)
88{
89 switch (str_param->codec) {
90 case SST_CODEC_TYPE_PCM:
91 return str_param->sparams.uc.pcm_params.sfreq;
92 case SST_CODEC_TYPE_AAC:
93 return str_param->sparams.uc.aac_params.externalsr;
94 case SST_CODEC_TYPE_MP3:
95 return 0;
96 default:
97 return -EINVAL;
98 }
99}
100
101/*
dee2ce69 102 * sst_get_num_channel - get number of channels for the stream
cc547054
VK		 103 *
104 * @str_param : stream params
105 */
106int sst_get_num_channel(struct snd_sst_params *str_param)
107{
108 switch (str_param->codec) {
109 case SST_CODEC_TYPE_PCM:
110 return str_param->sparams.uc.pcm_params.num_chan;
111 case SST_CODEC_TYPE_MP3:
112 return str_param->sparams.uc.mp3_params.num_chan;
113 case SST_CODEC_TYPE_AAC:
114 return str_param->sparams.uc.aac_params.num_chan;
115 default:
116 return -EINVAL;
117 }
118}
119
120/*
121 * sst_get_stream - this function prepares for stream allocation
122 *
123 * @str_param : stream param
124 */
125int sst_get_stream(struct intel_sst_drv *ctx,
126 struct snd_sst_params *str_param)
127{
128 int retval;
129 struct stream_info *str_info;
130
131 /* stream is not allocated, we are allocating */
132 retval = ctx->ops->alloc_stream(ctx, str_param);
133 if (retval <= 0) {
134 return -EIO;
135 }
136 /* store sampling freq */
137 str_info = &ctx->streams[retval];
138 str_info->sfreq = sst_get_sfreq(str_param);
139
140 return retval;
141}
142
143static int sst_power_control(struct device *dev, bool state)
144{
145 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
9308d145 146 int ret = 0;
5bb400ce
VK		 147 int usage_count = 0;
148
9308d145
VK		 149 if (state == true) {
150 ret = pm_runtime_get_sync(dev);
412efa73 151 usage_count = GET_USAGE_COUNT(dev);
5bb400ce 152 dev_dbg(ctx->dev, "Enable: pm usage count: %d\n", usage_count);
9308d145
VK		 153 if (ret < 0) {
154 dev_err(ctx->dev, "Runtime get failed with err: %d\n", ret);
155 return ret;
156 }
5bb400ce 157 if ((ctx->sst_state == SST_RESET) && (usage_count == 1)) {
9308d145
VK		 158 ret = sst_load_fw(ctx);
159 if (ret) {
160 dev_err(dev, "FW download fail %d\n", ret);
161 sst_set_fw_state_locked(ctx, SST_RESET);
162 ret = sst_pm_runtime_put(ctx);
163 }
164 }
165 } else {
412efa73 166 usage_count = GET_USAGE_COUNT(dev);
5bb400ce 167 dev_dbg(ctx->dev, "Disable: pm usage count: %d\n", usage_count);
cc547054 168 return sst_pm_runtime_put(ctx);
9308d145
VK		 169 }
170 return ret;
cc547054
VK		 171}
172
173/*
174 * sst_open_pcm_stream - Open PCM interface
175 *
176 * @str_param: parameters of pcm stream
177 *
178 * This function is called by MID sound card driver to open
179 * a new pcm interface
180 */
181static int sst_open_pcm_stream(struct device *dev,
182 struct snd_sst_params *str_param)
183{
184 int retval;
185 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
186
187 if (!str_param)
188 return -EINVAL;
189
cc547054 190 retval = sst_get_stream(ctx, str_param);
1a6db0bd 191 if (retval > 0)
cc547054 192 ctx->stream_cnt++;
1a6db0bd 193 else
cc547054 194 dev_err(ctx->dev, "sst_get_stream returned err %d\n", retval);
cc547054
VK		 195
196 return retval;
197}
198
7adab122
VK		 199static int sst_cdev_open(struct device *dev,
200 struct snd_sst_params *str_params, struct sst_compress_cb *cb)
201{
202 int str_id, retval;
203 struct stream_info *stream;
204 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
205
206 retval = pm_runtime_get_sync(ctx->dev);
207 if (retval < 0)
208 return retval;
209
210 str_id = sst_get_stream(ctx, str_params);
211 if (str_id > 0) {
212 dev_dbg(dev, "stream allocated in sst_cdev_open %d\n", str_id);
213 stream = &ctx->streams[str_id];
214 stream->compr_cb = cb->compr_cb;
215 stream->compr_cb_param = cb->param;
216 stream->drain_notify = cb->drain_notify;
217 stream->drain_cb_param = cb->drain_cb_param;
218 } else {
219 dev_err(dev, "stream encountered error during alloc %d\n", str_id);
220 str_id = -EINVAL;
221 sst_pm_runtime_put(ctx);
222 }
223 return str_id;
224}
225
226static int sst_cdev_close(struct device *dev, unsigned int str_id)
227{
228 int retval;
229 struct stream_info *stream;
230 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
231
232 stream = get_stream_info(ctx, str_id);
233 if (!stream) {
234 dev_err(dev, "stream info is NULL for str %d!!!\n", str_id);
235 return -EINVAL;
236 }
237
238 if (stream->status == STREAM_RESET) {
239 dev_dbg(dev, "stream in reset state...\n");
240 stream->status = STREAM_UN_INIT;
241
242 retval = 0;
243 goto put;
244 }
245
246 retval = sst_free_stream(ctx, str_id);
247put:
248 stream->compr_cb_param = NULL;
249 stream->compr_cb = NULL;
250
251 if (retval)
252 dev_err(dev, "free stream returned err %d\n", retval);
253
254 dev_dbg(dev, "End\n");
255 return retval;
256
257}
258
259static int sst_cdev_ack(struct device *dev, unsigned int str_id,
260 unsigned long bytes)
261{
262 struct stream_info *stream;
263 struct snd_sst_tstamp fw_tstamp = {0,};
264 int offset;
265 void __iomem *addr;
266 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
267
268 stream = get_stream_info(ctx, str_id);
269 if (!stream)
270 return -EINVAL;
271
272 /* update bytes sent */
273 stream->cumm_bytes += bytes;
274 dev_dbg(dev, "bytes copied %d inc by %ld\n", stream->cumm_bytes, bytes);
275
276 memcpy_fromio(&fw_tstamp,
277 ((void *)(ctx->mailbox + ctx->tstamp)
278 +(str_id * sizeof(fw_tstamp))),
279 sizeof(fw_tstamp));
280
281 fw_tstamp.bytes_copied = stream->cumm_bytes;
282 dev_dbg(dev, "bytes sent to fw %llu inc by %ld\n",
283 fw_tstamp.bytes_copied, bytes);
284
285 addr = ((void *)(ctx->mailbox + ctx->tstamp)) +
286 (str_id * sizeof(fw_tstamp));
287 offset = offsetof(struct snd_sst_tstamp, bytes_copied);
288 sst_shim_write(addr, offset, fw_tstamp.bytes_copied);
289 return 0;
290}
291
292static int sst_cdev_set_metadata(struct device *dev,
293 unsigned int str_id, struct snd_compr_metadata *metadata)
294{
295 int retval = 0;
296 struct stream_info *str_info;
297 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
298
299 dev_dbg(dev, "set metadata for stream %d\n", str_id);
300
301 str_info = get_stream_info(ctx, str_id);
302 if (!str_info)
303 return -EINVAL;
304
305 dev_dbg(dev, "pipe id = %d\n", str_info->pipe_id);
306 retval = sst_prepare_and_post_msg(ctx, str_info->task_id, IPC_CMD,
307 IPC_IA_SET_STREAM_PARAMS_MRFLD, str_info->pipe_id,
308 sizeof(*metadata), metadata, NULL,
309 true, true, true, false);
310
311 return retval;
312}
313
314static int sst_cdev_stream_pause(struct device *dev, unsigned int str_id)
315{
316 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
317
318 return sst_pause_stream(ctx, str_id);
319}
320
321static int sst_cdev_stream_pause_release(struct device *dev,
322 unsigned int str_id)
323{
324 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
325
326 return sst_resume_stream(ctx, str_id);
327}
328
329static int sst_cdev_stream_start(struct device *dev, unsigned int str_id)
330{
331 struct stream_info *str_info;
332 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
333
334 str_info = get_stream_info(ctx, str_id);
335 if (!str_info)
336 return -EINVAL;
337 str_info->prev = str_info->status;
338 str_info->status = STREAM_RUNNING;
339 return sst_start_stream(ctx, str_id);
340}
341
342static int sst_cdev_stream_drop(struct device *dev, unsigned int str_id)
343{
344 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
345
346 return sst_drop_stream(ctx, str_id);
347}
348
349static int sst_cdev_stream_drain(struct device *dev, unsigned int str_id)
350{
351 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
352
353 return sst_drain_stream(ctx, str_id, false);
354}
355
356static int sst_cdev_stream_partial_drain(struct device *dev,
357 unsigned int str_id)
358{
359 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
360
361 return sst_drain_stream(ctx, str_id, true);
362}
363
364static int sst_cdev_tstamp(struct device *dev, unsigned int str_id,
365 struct snd_compr_tstamp *tstamp)
366{
367 struct snd_sst_tstamp fw_tstamp = {0,};
368 struct stream_info *stream;
369 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
370
371 memcpy_fromio(&fw_tstamp,
372 ((void *)(ctx->mailbox + ctx->tstamp)
373 +(str_id * sizeof(fw_tstamp))),
374 sizeof(fw_tstamp));
375
376 stream = get_stream_info(ctx, str_id);
377 if (!stream)
378 return -EINVAL;
379 dev_dbg(dev, "rb_counter %llu in bytes\n", fw_tstamp.ring_buffer_counter);
380
381 tstamp->copied_total = fw_tstamp.ring_buffer_counter;
382 tstamp->pcm_frames = fw_tstamp.frames_decoded;
383 tstamp->pcm_io_frames = div_u64(fw_tstamp.hardware_counter,
75afbd05 384 (u64)stream->num_ch * SST_GET_BYTES_PER_SAMPLE(24));
7adab122
VK		 385 tstamp->sampling_rate = fw_tstamp.sampling_frequency;
386
387 dev_dbg(dev, "PCM = %u\n", tstamp->pcm_io_frames);
388 dev_dbg(dev, "Ptr Query on strid = %d copied_total %d, decodec %d\n",
389 str_id, tstamp->copied_total, tstamp->pcm_frames);
390 dev_dbg(dev, "rendered %d\n", tstamp->pcm_io_frames);
391
392 return 0;
393}
394
395static int sst_cdev_caps(struct snd_compr_caps *caps)
396{
397 caps->num_codecs = NUM_CODEC;
398 caps->min_fragment_size = MIN_FRAGMENT_SIZE; /* 50KB */
399 caps->max_fragment_size = MAX_FRAGMENT_SIZE; /* 1024KB */
400 caps->min_fragments = MIN_FRAGMENT;
401 caps->max_fragments = MAX_FRAGMENT;
402 caps->codecs[0] = SND_AUDIOCODEC_MP3;
403 caps->codecs[1] = SND_AUDIOCODEC_AAC;
404 return 0;
405}
406
407static struct snd_compr_codec_caps caps_mp3 = {
408 .num_descriptors = 1,
409 .descriptor[0].max_ch = 2,
410 .descriptor[0].sample_rates[0] = 48000,
411 .descriptor[0].sample_rates[1] = 44100,
412 .descriptor[0].sample_rates[2] = 32000,
413 .descriptor[0].sample_rates[3] = 16000,
414 .descriptor[0].sample_rates[4] = 8000,
415 .descriptor[0].num_sample_rates = 5,
416 .descriptor[0].bit_rate[0] = 320,
417 .descriptor[0].bit_rate[1] = 192,
418 .descriptor[0].num_bitrates = 2,
419 .descriptor[0].profiles = 0,
420 .descriptor[0].modes = SND_AUDIOCHANMODE_MP3_STEREO,
421 .descriptor[0].formats = 0,
422};
423
424static struct snd_compr_codec_caps caps_aac = {
425 .num_descriptors = 2,
426 .descriptor[1].max_ch = 2,
427 .descriptor[0].sample_rates[0] = 48000,
428 .descriptor[0].sample_rates[1] = 44100,
429 .descriptor[0].sample_rates[2] = 32000,
430 .descriptor[0].sample_rates[3] = 16000,
431 .descriptor[0].sample_rates[4] = 8000,
432 .descriptor[0].num_sample_rates = 5,
433 .descriptor[1].bit_rate[0] = 320,
434 .descriptor[1].bit_rate[1] = 192,
435 .descriptor[1].num_bitrates = 2,
436 .descriptor[1].profiles = 0,
437 .descriptor[1].modes = 0,
438 .descriptor[1].formats =
439 (SND_AUDIOSTREAMFORMAT_MP4ADTS |
440 SND_AUDIOSTREAMFORMAT_RAW),
441};
442
443static int sst_cdev_codec_caps(struct snd_compr_codec_caps *codec)
444{
445 if (codec->codec == SND_AUDIOCODEC_MP3)
446 *codec = caps_mp3;
447 else if (codec->codec == SND_AUDIOCODEC_AAC)
448 *codec = caps_aac;
449 else
450 return -EINVAL;
451
452 return 0;
453}
454
455void sst_cdev_fragment_elapsed(struct intel_sst_drv *ctx, int str_id)
456{
457 struct stream_info *stream;
458
459 dev_dbg(ctx->dev, "fragment elapsed from firmware for str_id %d\n",
460 str_id);
461 stream = &ctx->streams[str_id];
462 if (stream->compr_cb)
463 stream->compr_cb(stream->compr_cb_param);
464}
465
cc547054
VK		 466/*
467 * sst_close_pcm_stream - Close PCM interface
468 *
469 * @str_id: stream id to be closed
470 *
471 * This function is called by MID sound card driver to close
472 * an existing pcm interface
473 */
474static int sst_close_pcm_stream(struct device *dev, unsigned int str_id)
475{
476 struct stream_info *stream;
477 int retval = 0;
478 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
479
480 stream = get_stream_info(ctx, str_id);
481 if (!stream) {
482 dev_err(ctx->dev, "stream info is NULL for str %d!!!\n", str_id);
483 return -EINVAL;
484 }
485
486 if (stream->status == STREAM_RESET) {
487 /* silently fail here as we have cleaned the stream earlier */
488 dev_dbg(ctx->dev, "stream in reset state...\n");
489
490 retval = 0;
491 goto put;
492 }
493
494 retval = free_stream_context(ctx, str_id);
495put:
496 stream->pcm_substream = NULL;
497 stream->status = STREAM_UN_INIT;
498 stream->period_elapsed = NULL;
499 ctx->stream_cnt--;
500
1a6db0bd
SP		 501 if (retval)
502 dev_err(ctx->dev, "free stream returned err %d\n", retval);
cc547054
VK		 503
504 dev_dbg(ctx->dev, "Exit\n");
505 return 0;
506}
507
508static inline int sst_calc_tstamp(struct intel_sst_drv *ctx,
509 struct pcm_stream_info *info,
510 struct snd_pcm_substream *substream,
511 struct snd_sst_tstamp *fw_tstamp)
512{
513 size_t delay_bytes, delay_frames;
514 size_t buffer_sz;
515 u32 pointer_bytes, pointer_samples;
516
517 dev_dbg(ctx->dev, "mrfld ring_buffer_counter %llu in bytes\n",
518 fw_tstamp->ring_buffer_counter);
519 dev_dbg(ctx->dev, "mrfld hardware_counter %llu in bytes\n",
520 fw_tstamp->hardware_counter);
521 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
522 delay_bytes = (size_t) (fw_tstamp->ring_buffer_counter -
523 fw_tstamp->hardware_counter);
524 else
525 delay_bytes = (size_t) (fw_tstamp->hardware_counter -
526 fw_tstamp->ring_buffer_counter);
527 delay_frames = bytes_to_frames(substream->runtime, delay_bytes);
528 buffer_sz = snd_pcm_lib_buffer_bytes(substream);
529 div_u64_rem(fw_tstamp->ring_buffer_counter, buffer_sz, &pointer_bytes);
530 pointer_samples = bytes_to_samples(substream->runtime, pointer_bytes);
531
532 dev_dbg(ctx->dev, "pcm delay %zu in bytes\n", delay_bytes);
533
534 info->buffer_ptr = pointer_samples / substream->runtime->channels;
535
ffb3722b 536 info->pcm_delay = delay_frames;
cc547054
VK		 537 dev_dbg(ctx->dev, "buffer ptr %llu pcm_delay rep: %llu\n",
538 info->buffer_ptr, info->pcm_delay);
539 return 0;
540}
541
542static int sst_read_timestamp(struct device *dev, struct pcm_stream_info *info)
543{
544 struct stream_info *stream;
545 struct snd_pcm_substream *substream;
546 struct snd_sst_tstamp fw_tstamp;
547 unsigned int str_id;
548 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
549
550 str_id = info->str_id;
551 stream = get_stream_info(ctx, str_id);
552 if (!stream)
553 return -EINVAL;
554
555 if (!stream->pcm_substream)
556 return -EINVAL;
557 substream = stream->pcm_substream;
558
559 memcpy_fromio(&fw_tstamp,
560 ((void *)(ctx->mailbox + ctx->tstamp)
561 + (str_id * sizeof(fw_tstamp))),
562 sizeof(fw_tstamp));
563 return sst_calc_tstamp(ctx, info, substream, &fw_tstamp);
564}
565
566static int sst_stream_start(struct device *dev, int str_id)
567{
568 struct stream_info *str_info;
569 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
570
571 if (ctx->sst_state != SST_FW_RUNNING)
572 return 0;
573 str_info = get_stream_info(ctx, str_id);
574 if (!str_info)
575 return -EINVAL;
576 str_info->prev = str_info->status;
577 str_info->status = STREAM_RUNNING;
578 sst_start_stream(ctx, str_id);
579
580 return 0;
581}
582
583static int sst_stream_drop(struct device *dev, int str_id)
584{
585 struct stream_info *str_info;
586 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
587
588 if (ctx->sst_state != SST_FW_RUNNING)
589 return 0;
590
591 str_info = get_stream_info(ctx, str_id);
592 if (!str_info)
593 return -EINVAL;
594 str_info->prev = STREAM_UN_INIT;
595 str_info->status = STREAM_INIT;
596 return sst_drop_stream(ctx, str_id);
597}
598
e0b87d47
VK		 599static int sst_stream_pause(struct device *dev, int str_id)
600{
601 struct stream_info *str_info;
602 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
603
604 if (ctx->sst_state != SST_FW_RUNNING)
605 return 0;
606
607 str_info = get_stream_info(ctx, str_id);
608 if (!str_info)
609 return -EINVAL;
610
611 return sst_pause_stream(ctx, str_id);
612}
613
614static int sst_stream_resume(struct device *dev, int str_id)
615{
616 struct stream_info *str_info;
617 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
618
619 if (ctx->sst_state != SST_FW_RUNNING)
620 return 0;
621
622 str_info = get_stream_info(ctx, str_id);
623 if (!str_info)
624 return -EINVAL;
625 return sst_resume_stream(ctx, str_id);
626}
627
cc547054
VK		 628static int sst_stream_init(struct device *dev, struct pcm_stream_info *str_info)
629{
630 int str_id = 0;
631 struct stream_info *stream;
632 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
633
634 str_id = str_info->str_id;
635
636 if (ctx->sst_state != SST_FW_RUNNING)
637 return 0;
638
639 stream = get_stream_info(ctx, str_id);
640 if (!stream)
641 return -EINVAL;
642
643 dev_dbg(ctx->dev, "setting the period ptrs\n");
644 stream->pcm_substream = str_info->arg;
645 stream->period_elapsed = str_info->period_elapsed;
646 stream->sfreq = str_info->sfreq;
647 stream->prev = stream->status;
648 stream->status = STREAM_INIT;
649 dev_dbg(ctx->dev,
650 "pcm_substream %p, period_elapsed %p, sfreq %d, status %d\n",
651 stream->pcm_substream, stream->period_elapsed,
652 stream->sfreq, stream->status);
653
654 return 0;
655}
656
657/*
658 * sst_set_byte_stream - Set generic params
659 *
660 * @cmd: control cmd to be set
661 * @arg: command argument
662 *
663 * This function is called by MID sound card driver to configure
664 * SST runtime params.
665 */
666static int sst_send_byte_stream(struct device *dev,
667 struct snd_sst_bytes_v2 *bytes)
668{
669 int ret_val = 0;
670 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
671
672 if (NULL == bytes)
673 return -EINVAL;
674 ret_val = pm_runtime_get_sync(ctx->dev);
675 if (ret_val < 0)
676 return ret_val;
677
678 ret_val = sst_send_byte_stream_mrfld(ctx, bytes);
679 sst_pm_runtime_put(ctx);
680
681 return ret_val;
682}
683
684static struct sst_ops pcm_ops = {
685 .open = sst_open_pcm_stream,
686 .stream_init = sst_stream_init,
687 .stream_start = sst_stream_start,
688 .stream_drop = sst_stream_drop,
e0b87d47
VK		 689 .stream_pause = sst_stream_pause,
690 .stream_pause_release = sst_stream_resume,
cc547054
VK		 691 .stream_read_tstamp = sst_read_timestamp,
692 .send_byte_stream = sst_send_byte_stream,
693 .close = sst_close_pcm_stream,
694 .power = sst_power_control,
695};
696
7adab122
VK		 697static struct compress_sst_ops compr_ops = {
698 .open = sst_cdev_open,
699 .close = sst_cdev_close,
700 .stream_pause = sst_cdev_stream_pause,
701 .stream_pause_release = sst_cdev_stream_pause_release,
702 .stream_start = sst_cdev_stream_start,
703 .stream_drop = sst_cdev_stream_drop,
704 .stream_drain = sst_cdev_stream_drain,
705 .stream_partial_drain = sst_cdev_stream_partial_drain,
706 .tstamp = sst_cdev_tstamp,
707 .ack = sst_cdev_ack,
708 .get_caps = sst_cdev_caps,
709 .get_codec_caps = sst_cdev_codec_caps,
710 .set_metadata = sst_cdev_set_metadata,
711 .power = sst_power_control,
712};
713
cc547054
VK		 714static struct sst_device sst_dsp_device = {
715 .name = "Intel(R) SST LPE",
716 .dev = NULL,
717 .ops = &pcm_ops,
7adab122 718 .compr_ops = &compr_ops,
cc547054
VK		 719};
720
721/*
722 * sst_register - function to register DSP
723 *
724 * This functions registers DSP with the platform driver
725 */
726int sst_register(struct device *dev)
727{
728 int ret_val;
729
730 sst_dsp_device.dev = dev;
731 ret_val = sst_register_dsp(&sst_dsp_device);
732 if (ret_val)
733 dev_err(dev, "Unable to register DSP with platform driver\n");
734
735 return ret_val;
736}
737
738int sst_unregister(struct device *dev)
739{
740 return sst_unregister_dsp(&sst_dsp_device);
741}
Linux 6.x block layer and io_uring tree(s)