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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"
35#include "../../common/sst-dsp.h"
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)
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
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
59 ret = sst_free_stream(ctx, str_id);
60 if (ret)
61 sst_clean_stream(&ctx->streams[str_id]);
62 return ret;
63 } else {
64 dev_err(ctx->dev, "we tried to free stream context %d which was freed!!!\n", str_id);
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
84
85
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
102
103
104
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
122
123
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
132 retval = ctx->ops->alloc_stream(ctx, str_param);
133 if (retval <= 0) {
134 return -EIO;
135 }
136
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);
146 int ret = 0;
147 int usage_count = 0;
148
149 if (state == true) {
150 ret = pm_runtime_get_sync(dev);
151 usage_count = GET_USAGE_COUNT(dev);
152 dev_dbg(ctx->dev, "Enable: pm usage count: %d\n", usage_count);
153 if (ret < 0) {
154 pm_runtime_put_sync(dev);
155 dev_err(ctx->dev, "Runtime get failed with err: %d\n", ret);
156 return ret;
157 }
158 if ((ctx->sst_state == SST_RESET) && (usage_count == 1)) {
159 ret = sst_load_fw(ctx);
160 if (ret) {
161 dev_err(dev, "FW download fail %d\n", ret);
162 sst_set_fw_state_locked(ctx, SST_RESET);
163 ret = sst_pm_runtime_put(ctx);
164 }
165 }
166 } else {
167 usage_count = GET_USAGE_COUNT(dev);
168 dev_dbg(ctx->dev, "Disable: pm usage count: %d\n", usage_count);
169 return sst_pm_runtime_put(ctx);
170 }
171 return ret;
172}
173
174
175
176
177
178
179
180
181
182static int sst_open_pcm_stream(struct device *dev,
183 struct snd_sst_params *str_param)
184{
185 int retval;
186 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
187
188 if (!str_param)
189 return -EINVAL;
190
191 retval = sst_get_stream(ctx, str_param);
192 if (retval > 0)
193 ctx->stream_cnt++;
194 else
195 dev_err(ctx->dev, "sst_get_stream returned err %d\n", retval);
196
197 return retval;
198}
199
200static int sst_cdev_open(struct device *dev,
201 struct snd_sst_params *str_params, struct sst_compress_cb *cb)
202{
203 int str_id, retval;
204 struct stream_info *stream;
205 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
206
207 retval = pm_runtime_get_sync(ctx->dev);
208 if (retval < 0) {
209 pm_runtime_put_sync(ctx->dev);
210 return retval;
211 }
212
213 str_id = sst_get_stream(ctx, str_params);
214 if (str_id > 0) {
215 dev_dbg(dev, "stream allocated in sst_cdev_open %d\n", str_id);
216 stream = &ctx->streams[str_id];
217 stream->compr_cb = cb->compr_cb;
218 stream->compr_cb_param = cb->param;
219 stream->drain_notify = cb->drain_notify;
220 stream->drain_cb_param = cb->drain_cb_param;
221 } else {
222 dev_err(dev, "stream encountered error during alloc %d\n", str_id);
223 str_id = -EINVAL;
224 sst_pm_runtime_put(ctx);
225 }
226 return str_id;
227}
228
229static int sst_cdev_close(struct device *dev, unsigned int str_id)
230{
231 int retval;
232 struct stream_info *stream;
233 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
234
235 stream = get_stream_info(ctx, str_id);
236 if (!stream) {
237 dev_err(dev, "stream info is NULL for str %d!!!\n", str_id);
238 return -EINVAL;
239 }
240
241 retval = sst_free_stream(ctx, str_id);
242 stream->compr_cb_param = NULL;
243 stream->compr_cb = NULL;
244
245 if (retval)
246 dev_err(dev, "free stream returned err %d\n", retval);
247
248 dev_dbg(dev, "End\n");
249 return retval;
250}
251
252static int sst_cdev_ack(struct device *dev, unsigned int str_id,
253 unsigned long bytes)
254{
255 struct stream_info *stream;
256 struct snd_sst_tstamp fw_tstamp = {0,};
257 int offset;
258 void __iomem *addr;
259 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
260
261 stream = get_stream_info(ctx, str_id);
262 if (!stream)
263 return -EINVAL;
264
265
266 stream->cumm_bytes += bytes;
267 dev_dbg(dev, "bytes copied %d inc by %ld\n", stream->cumm_bytes, bytes);
268
269 memcpy_fromio(&fw_tstamp,
270 ((void *)(ctx->mailbox + ctx->tstamp)
271 +(str_id * sizeof(fw_tstamp))),
272 sizeof(fw_tstamp));
273
274 fw_tstamp.bytes_copied = stream->cumm_bytes;
275 dev_dbg(dev, "bytes sent to fw %llu inc by %ld\n",
276 fw_tstamp.bytes_copied, bytes);
277
278 addr = ((void *)(ctx->mailbox + ctx->tstamp)) +
279 (str_id * sizeof(fw_tstamp));
280 offset = offsetof(struct snd_sst_tstamp, bytes_copied);
281 sst_shim_write(addr, offset, fw_tstamp.bytes_copied);
282 return 0;
283}
284
285static int sst_cdev_set_metadata(struct device *dev,
286 unsigned int str_id, struct snd_compr_metadata *metadata)
287{
288 int retval = 0;
289 struct stream_info *str_info;
290 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
291
292 dev_dbg(dev, "set metadata for stream %d\n", str_id);
293
294 str_info = get_stream_info(ctx, str_id);
295 if (!str_info)
296 return -EINVAL;
297
298 dev_dbg(dev, "pipe id = %d\n", str_info->pipe_id);
299 retval = sst_prepare_and_post_msg(ctx, str_info->task_id, IPC_CMD,
300 IPC_IA_SET_STREAM_PARAMS_MRFLD, str_info->pipe_id,
301 sizeof(*metadata), metadata, NULL,
302 true, true, true, false);
303
304 return retval;
305}
306
307static int sst_cdev_stream_pause(struct device *dev, unsigned int str_id)
308{
309 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
310
311 return sst_pause_stream(ctx, str_id);
312}
313
314static int sst_cdev_stream_pause_release(struct device *dev,
315 unsigned int str_id)
316{
317 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
318
319 return sst_resume_stream(ctx, str_id);
320}
321
322static int sst_cdev_stream_start(struct device *dev, unsigned int str_id)
323{
324 struct stream_info *str_info;
325 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
326
327 str_info = get_stream_info(ctx, str_id);
328 if (!str_info)
329 return -EINVAL;
330 str_info->prev = str_info->status;
331 str_info->status = STREAM_RUNNING;
332 return sst_start_stream(ctx, str_id);
333}
334
335static int sst_cdev_stream_drop(struct device *dev, unsigned int str_id)
336{
337 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
338
339 return sst_drop_stream(ctx, str_id);
340}
341
342static int sst_cdev_stream_drain(struct device *dev, unsigned int str_id)
343{
344 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
345
346 return sst_drain_stream(ctx, str_id, false);
347}
348
349static int sst_cdev_stream_partial_drain(struct device *dev,
350 unsigned int str_id)
351{
352 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
353
354 return sst_drain_stream(ctx, str_id, true);
355}
356
357static int sst_cdev_tstamp(struct device *dev, unsigned int str_id,
358 struct snd_compr_tstamp *tstamp)
359{
360 struct snd_sst_tstamp fw_tstamp = {0,};
361 struct stream_info *stream;
362 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
363
364 memcpy_fromio(&fw_tstamp,
365 ((void *)(ctx->mailbox + ctx->tstamp)
366 +(str_id * sizeof(fw_tstamp))),
367 sizeof(fw_tstamp));
368
369 stream = get_stream_info(ctx, str_id);
370 if (!stream)
371 return -EINVAL;
372 dev_dbg(dev, "rb_counter %llu in bytes\n", fw_tstamp.ring_buffer_counter);
373
374 tstamp->copied_total = fw_tstamp.ring_buffer_counter;
375 tstamp->pcm_frames = fw_tstamp.frames_decoded;
376 tstamp->pcm_io_frames = div_u64(fw_tstamp.hardware_counter,
377 (u64)stream->num_ch * SST_GET_BYTES_PER_SAMPLE(24));
378 tstamp->sampling_rate = fw_tstamp.sampling_frequency;
379
380 dev_dbg(dev, "PCM = %u\n", tstamp->pcm_io_frames);
381 dev_dbg(dev, "Ptr Query on strid = %d copied_total %d, decodec %d\n",
382 str_id, tstamp->copied_total, tstamp->pcm_frames);
383 dev_dbg(dev, "rendered %d\n", tstamp->pcm_io_frames);
384
385 return 0;
386}
387
388static int sst_cdev_caps(struct snd_compr_caps *caps)
389{
390 caps->num_codecs = NUM_CODEC;
391 caps->min_fragment_size = MIN_FRAGMENT_SIZE;
392 caps->max_fragment_size = MAX_FRAGMENT_SIZE;
393 caps->min_fragments = MIN_FRAGMENT;
394 caps->max_fragments = MAX_FRAGMENT;
395 caps->codecs[0] = SND_AUDIOCODEC_MP3;
396 caps->codecs[1] = SND_AUDIOCODEC_AAC;
397 return 0;
398}
399
400static const struct snd_compr_codec_caps caps_mp3 = {
401 .num_descriptors = 1,
402 .descriptor[0].max_ch = 2,
403 .descriptor[0].sample_rates[0] = 48000,
404 .descriptor[0].sample_rates[1] = 44100,
405 .descriptor[0].sample_rates[2] = 32000,
406 .descriptor[0].sample_rates[3] = 16000,
407 .descriptor[0].sample_rates[4] = 8000,
408 .descriptor[0].num_sample_rates = 5,
409 .descriptor[0].bit_rate[0] = 320,
410 .descriptor[0].bit_rate[1] = 192,
411 .descriptor[0].num_bitrates = 2,
412 .descriptor[0].profiles = 0,
413 .descriptor[0].modes = SND_AUDIOCHANMODE_MP3_STEREO,
414 .descriptor[0].formats = 0,
415};
416
417static const struct snd_compr_codec_caps caps_aac = {
418 .num_descriptors = 2,
419 .descriptor[1].max_ch = 2,
420 .descriptor[0].sample_rates[0] = 48000,
421 .descriptor[0].sample_rates[1] = 44100,
422 .descriptor[0].sample_rates[2] = 32000,
423 .descriptor[0].sample_rates[3] = 16000,
424 .descriptor[0].sample_rates[4] = 8000,
425 .descriptor[0].num_sample_rates = 5,
426 .descriptor[1].bit_rate[0] = 320,
427 .descriptor[1].bit_rate[1] = 192,
428 .descriptor[1].num_bitrates = 2,
429 .descriptor[1].profiles = 0,
430 .descriptor[1].modes = 0,
431 .descriptor[1].formats =
432 (SND_AUDIOSTREAMFORMAT_MP4ADTS |
433 SND_AUDIOSTREAMFORMAT_RAW),
434};
435
436static int sst_cdev_codec_caps(struct snd_compr_codec_caps *codec)
437{
438 if (codec->codec == SND_AUDIOCODEC_MP3)
439 *codec = caps_mp3;
440 else if (codec->codec == SND_AUDIOCODEC_AAC)
441 *codec = caps_aac;
442 else
443 return -EINVAL;
444
445 return 0;
446}
447
448void sst_cdev_fragment_elapsed(struct intel_sst_drv *ctx, int str_id)
449{
450 struct stream_info *stream;
451
452 dev_dbg(ctx->dev, "fragment elapsed from firmware for str_id %d\n",
453 str_id);
454 stream = &ctx->streams[str_id];
455 if (stream->compr_cb)
456 stream->compr_cb(stream->compr_cb_param);
457}
458
459
460
461
462
463
464
465
466
467static int sst_close_pcm_stream(struct device *dev, unsigned int str_id)
468{
469 struct stream_info *stream;
470 int retval = 0;
471 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
472
473 stream = get_stream_info(ctx, str_id);
474 if (!stream) {
475 dev_err(ctx->dev, "stream info is NULL for str %d!!!\n", str_id);
476 return -EINVAL;
477 }
478
479 retval = free_stream_context(ctx, str_id);
480 stream->pcm_substream = NULL;
481 stream->status = STREAM_UN_INIT;
482 stream->period_elapsed = NULL;
483 ctx->stream_cnt--;
484
485 if (retval)
486 dev_err(ctx->dev, "free stream returned err %d\n", retval);
487
488 dev_dbg(ctx->dev, "Exit\n");
489 return 0;
490}
491
492static inline int sst_calc_tstamp(struct intel_sst_drv *ctx,
493 struct pcm_stream_info *info,
494 struct snd_pcm_substream *substream,
495 struct snd_sst_tstamp *fw_tstamp)
496{
497 size_t delay_bytes, delay_frames;
498 size_t buffer_sz;
499 u32 pointer_bytes, pointer_samples;
500
501 dev_dbg(ctx->dev, "mrfld ring_buffer_counter %llu in bytes\n",
502 fw_tstamp->ring_buffer_counter);
503 dev_dbg(ctx->dev, "mrfld hardware_counter %llu in bytes\n",
504 fw_tstamp->hardware_counter);
505 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
506 delay_bytes = (size_t) (fw_tstamp->ring_buffer_counter -
507 fw_tstamp->hardware_counter);
508 else
509 delay_bytes = (size_t) (fw_tstamp->hardware_counter -
510 fw_tstamp->ring_buffer_counter);
511 delay_frames = bytes_to_frames(substream->runtime, delay_bytes);
512 buffer_sz = snd_pcm_lib_buffer_bytes(substream);
513 div_u64_rem(fw_tstamp->ring_buffer_counter, buffer_sz, &pointer_bytes);
514 pointer_samples = bytes_to_samples(substream->runtime, pointer_bytes);
515
516 dev_dbg(ctx->dev, "pcm delay %zu in bytes\n", delay_bytes);
517
518 info->buffer_ptr = pointer_samples / substream->runtime->channels;
519
520 info->pcm_delay = delay_frames;
521 dev_dbg(ctx->dev, "buffer ptr %llu pcm_delay rep: %llu\n",
522 info->buffer_ptr, info->pcm_delay);
523 return 0;
524}
525
526static int sst_read_timestamp(struct device *dev, struct pcm_stream_info *info)
527{
528 struct stream_info *stream;
529 struct snd_pcm_substream *substream;
530 struct snd_sst_tstamp fw_tstamp;
531 unsigned int str_id;
532 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
533
534 str_id = info->str_id;
535 stream = get_stream_info(ctx, str_id);
536 if (!stream)
537 return -EINVAL;
538
539 if (!stream->pcm_substream)
540 return -EINVAL;
541 substream = stream->pcm_substream;
542
543 memcpy_fromio(&fw_tstamp,
544 ((void *)(ctx->mailbox + ctx->tstamp)
545 + (str_id * sizeof(fw_tstamp))),
546 sizeof(fw_tstamp));
547 return sst_calc_tstamp(ctx, info, substream, &fw_tstamp);
548}
549
550static int sst_stream_start(struct device *dev, int str_id)
551{
552 struct stream_info *str_info;
553 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
554
555 if (ctx->sst_state != SST_FW_RUNNING)
556 return 0;
557 str_info = get_stream_info(ctx, str_id);
558 if (!str_info)
559 return -EINVAL;
560 str_info->prev = str_info->status;
561 str_info->status = STREAM_RUNNING;
562 sst_start_stream(ctx, str_id);
563
564 return 0;
565}
566
567static int sst_stream_drop(struct device *dev, int str_id)
568{
569 struct stream_info *str_info;
570 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
571
572 if (ctx->sst_state != SST_FW_RUNNING)
573 return 0;
574
575 str_info = get_stream_info(ctx, str_id);
576 if (!str_info)
577 return -EINVAL;
578 str_info->prev = STREAM_UN_INIT;
579 str_info->status = STREAM_INIT;
580 return sst_drop_stream(ctx, str_id);
581}
582
583static int sst_stream_pause(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
595 return sst_pause_stream(ctx, str_id);
596}
597
598static int sst_stream_resume(struct device *dev, int str_id)
599{
600 struct stream_info *str_info;
601 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
602
603 if (ctx->sst_state != SST_FW_RUNNING)
604 return 0;
605
606 str_info = get_stream_info(ctx, str_id);
607 if (!str_info)
608 return -EINVAL;
609 return sst_resume_stream(ctx, str_id);
610}
611
612static int sst_stream_init(struct device *dev, struct pcm_stream_info *str_info)
613{
614 int str_id = 0;
615 struct stream_info *stream;
616 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
617
618 str_id = str_info->str_id;
619
620 if (ctx->sst_state != SST_FW_RUNNING)
621 return 0;
622
623 stream = get_stream_info(ctx, str_id);
624 if (!stream)
625 return -EINVAL;
626
627 dev_dbg(ctx->dev, "setting the period ptrs\n");
628 stream->pcm_substream = str_info->arg;
629 stream->period_elapsed = str_info->period_elapsed;
630 stream->sfreq = str_info->sfreq;
631 stream->prev = stream->status;
632 stream->status = STREAM_INIT;
633 dev_dbg(ctx->dev,
634 "pcm_substream %p, period_elapsed %p, sfreq %d, status %d\n",
635 stream->pcm_substream, stream->period_elapsed,
636 stream->sfreq, stream->status);
637
638 return 0;
639}
640
641
642
643
644
645
646
647
648
649
650static int sst_send_byte_stream(struct device *dev,
651 struct snd_sst_bytes_v2 *bytes)
652{
653 int ret_val = 0;
654 struct intel_sst_drv *ctx = dev_get_drvdata(dev);
655
656 if (NULL == bytes)
657 return -EINVAL;
658 ret_val = pm_runtime_get_sync(ctx->dev);
659 if (ret_val < 0) {
660 pm_runtime_put_sync(ctx->dev);
661 return ret_val;
662 }
663
664 ret_val = sst_send_byte_stream_mrfld(ctx, bytes);
665 sst_pm_runtime_put(ctx);
666
667 return ret_val;
668}
669
670static struct sst_ops pcm_ops = {
671 .open = sst_open_pcm_stream,
672 .stream_init = sst_stream_init,
673 .stream_start = sst_stream_start,
674 .stream_drop = sst_stream_drop,
675 .stream_pause = sst_stream_pause,
676 .stream_pause_release = sst_stream_resume,
677 .stream_read_tstamp = sst_read_timestamp,
678 .send_byte_stream = sst_send_byte_stream,
679 .close = sst_close_pcm_stream,
680 .power = sst_power_control,
681};
682
683static struct compress_sst_ops compr_ops = {
684 .open = sst_cdev_open,
685 .close = sst_cdev_close,
686 .stream_pause = sst_cdev_stream_pause,
687 .stream_pause_release = sst_cdev_stream_pause_release,
688 .stream_start = sst_cdev_stream_start,
689 .stream_drop = sst_cdev_stream_drop,
690 .stream_drain = sst_cdev_stream_drain,
691 .stream_partial_drain = sst_cdev_stream_partial_drain,
692 .tstamp = sst_cdev_tstamp,
693 .ack = sst_cdev_ack,
694 .get_caps = sst_cdev_caps,
695 .get_codec_caps = sst_cdev_codec_caps,
696 .set_metadata = sst_cdev_set_metadata,
697 .power = sst_power_control,
698};
699
700static struct sst_device sst_dsp_device = {
701 .name = "Intel(R) SST LPE",
702 .dev = NULL,
703 .ops = &pcm_ops,
704 .compr_ops = &compr_ops,
705};
706
707
708
709
710
711
712int sst_register(struct device *dev)
713{
714 int ret_val;
715
716 sst_dsp_device.dev = dev;
717 ret_val = sst_register_dsp(&sst_dsp_device);
718 if (ret_val)
719 dev_err(dev, "Unable to register DSP with platform driver\n");
720
721 return ret_val;
722}
723
724int sst_unregister(struct device *dev)
725{
726 return sst_unregister_dsp(&sst_dsp_device);
727}
728
