This source file includes following definitions.
- event_handler
- q6asm_dai_prepare
- q6asm_dai_trigger
- q6asm_dai_open
- q6asm_dai_close
- q6asm_dai_pointer
- q6asm_dai_mmap
- q6asm_dai_hw_params
- compress_event_handler
- q6asm_dai_compr_open
- q6asm_dai_compr_free
- q6asm_dai_compr_set_params
- q6asm_dai_compr_trigger
- q6asm_dai_compr_pointer
- q6asm_dai_compr_ack
- q6asm_dai_compr_mmap
- q6asm_dai_compr_get_caps
- q6asm_dai_compr_get_codec_caps
- q6asm_dai_pcm_new
- q6asm_dai_pcm_free
- of_q6asm_parse_dai_data
- q6asm_dai_probe
1
2
3
4
5 #include <linux/init.h>
6 #include <linux/err.h>
7 #include <linux/module.h>
8 #include <linux/platform_device.h>
9 #include <linux/slab.h>
10 #include <sound/soc.h>
11 #include <sound/soc-dapm.h>
12 #include <sound/pcm.h>
13 #include <linux/spinlock.h>
14 #include <sound/compress_driver.h>
15 #include <asm/dma.h>
16 #include <linux/dma-mapping.h>
17 #include <linux/of_device.h>
18 #include <sound/pcm_params.h>
19 #include "q6asm.h"
20 #include "q6routing.h"
21 #include "q6dsp-errno.h"
22
23 #define DRV_NAME "q6asm-fe-dai"
24
25 #define PLAYBACK_MIN_NUM_PERIODS 2
26 #define PLAYBACK_MAX_NUM_PERIODS 8
27 #define PLAYBACK_MAX_PERIOD_SIZE 65536
28 #define PLAYBACK_MIN_PERIOD_SIZE 128
29 #define CAPTURE_MIN_NUM_PERIODS 2
30 #define CAPTURE_MAX_NUM_PERIODS 8
31 #define CAPTURE_MAX_PERIOD_SIZE 4096
32 #define CAPTURE_MIN_PERIOD_SIZE 320
33 #define SID_MASK_DEFAULT 0xF
34
35
36 #define COMPR_PLAYBACK_MIN_FRAGMENT_SIZE (8 * 1024)
37 #define COMPR_PLAYBACK_MAX_FRAGMENT_SIZE (128 * 1024)
38 #define COMPR_PLAYBACK_MIN_NUM_FRAGMENTS (4)
39 #define COMPR_PLAYBACK_MAX_NUM_FRAGMENTS (16 * 4)
40 #define Q6ASM_DAI_TX_RX 0
41 #define Q6ASM_DAI_TX 1
42 #define Q6ASM_DAI_RX 2
43
44 enum stream_state {
45 Q6ASM_STREAM_IDLE = 0,
46 Q6ASM_STREAM_STOPPED,
47 Q6ASM_STREAM_RUNNING,
48 };
49
50 struct q6asm_dai_rtd {
51 struct snd_pcm_substream *substream;
52 struct snd_compr_stream *cstream;
53 struct snd_compr_params codec_param;
54 struct snd_dma_buffer dma_buffer;
55 spinlock_t lock;
56 phys_addr_t phys;
57 unsigned int pcm_size;
58 unsigned int pcm_count;
59 unsigned int pcm_irq_pos;
60 unsigned int periods;
61 unsigned int bytes_sent;
62 unsigned int bytes_received;
63 unsigned int copied_total;
64 uint16_t bits_per_sample;
65 uint16_t source;
66 struct audio_client *audio_client;
67 uint16_t session_id;
68 enum stream_state state;
69 };
70
71 struct q6asm_dai_data {
72 long long int sid;
73 };
74
75 static struct snd_pcm_hardware q6asm_dai_hardware_capture = {
76 .info = (SNDRV_PCM_INFO_MMAP |
77 SNDRV_PCM_INFO_BLOCK_TRANSFER |
78 SNDRV_PCM_INFO_MMAP_VALID |
79 SNDRV_PCM_INFO_INTERLEAVED |
80 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME),
81 .formats = (SNDRV_PCM_FMTBIT_S16_LE |
82 SNDRV_PCM_FMTBIT_S24_LE),
83 .rates = SNDRV_PCM_RATE_8000_48000,
84 .rate_min = 8000,
85 .rate_max = 48000,
86 .channels_min = 1,
87 .channels_max = 4,
88 .buffer_bytes_max = CAPTURE_MAX_NUM_PERIODS *
89 CAPTURE_MAX_PERIOD_SIZE,
90 .period_bytes_min = CAPTURE_MIN_PERIOD_SIZE,
91 .period_bytes_max = CAPTURE_MAX_PERIOD_SIZE,
92 .periods_min = CAPTURE_MIN_NUM_PERIODS,
93 .periods_max = CAPTURE_MAX_NUM_PERIODS,
94 .fifo_size = 0,
95 };
96
97 static struct snd_pcm_hardware q6asm_dai_hardware_playback = {
98 .info = (SNDRV_PCM_INFO_MMAP |
99 SNDRV_PCM_INFO_BLOCK_TRANSFER |
100 SNDRV_PCM_INFO_MMAP_VALID |
101 SNDRV_PCM_INFO_INTERLEAVED |
102 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME),
103 .formats = (SNDRV_PCM_FMTBIT_S16_LE |
104 SNDRV_PCM_FMTBIT_S24_LE),
105 .rates = SNDRV_PCM_RATE_8000_192000,
106 .rate_min = 8000,
107 .rate_max = 192000,
108 .channels_min = 1,
109 .channels_max = 8,
110 .buffer_bytes_max = (PLAYBACK_MAX_NUM_PERIODS *
111 PLAYBACK_MAX_PERIOD_SIZE),
112 .period_bytes_min = PLAYBACK_MIN_PERIOD_SIZE,
113 .period_bytes_max = PLAYBACK_MAX_PERIOD_SIZE,
114 .periods_min = PLAYBACK_MIN_NUM_PERIODS,
115 .periods_max = PLAYBACK_MAX_NUM_PERIODS,
116 .fifo_size = 0,
117 };
118
119 #define Q6ASM_FEDAI_DRIVER(num) { \
120 .playback = { \
121 .stream_name = "MultiMedia"#num" Playback", \
122 .rates = (SNDRV_PCM_RATE_8000_192000| \
123 SNDRV_PCM_RATE_KNOT), \
124 .formats = (SNDRV_PCM_FMTBIT_S16_LE | \
125 SNDRV_PCM_FMTBIT_S24_LE), \
126 .channels_min = 1, \
127 .channels_max = 8, \
128 .rate_min = 8000, \
129 .rate_max = 192000, \
130 }, \
131 .capture = { \
132 .stream_name = "MultiMedia"#num" Capture", \
133 .rates = (SNDRV_PCM_RATE_8000_48000| \
134 SNDRV_PCM_RATE_KNOT), \
135 .formats = (SNDRV_PCM_FMTBIT_S16_LE | \
136 SNDRV_PCM_FMTBIT_S24_LE), \
137 .channels_min = 1, \
138 .channels_max = 4, \
139 .rate_min = 8000, \
140 .rate_max = 48000, \
141 }, \
142 .name = "MultiMedia"#num, \
143 .id = MSM_FRONTEND_DAI_MULTIMEDIA##num, \
144 }
145
146
147 static unsigned int supported_sample_rates[] = {
148 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000,
149 88200, 96000, 176400, 192000
150 };
151
152 static struct snd_pcm_hw_constraint_list constraints_sample_rates = {
153 .count = ARRAY_SIZE(supported_sample_rates),
154 .list = supported_sample_rates,
155 .mask = 0,
156 };
157
158 static const struct snd_compr_codec_caps q6asm_compr_caps = {
159 .num_descriptors = 1,
160 .descriptor[0].max_ch = 2,
161 .descriptor[0].sample_rates = { 8000, 11025, 12000, 16000, 22050,
162 24000, 32000, 44100, 48000, 88200,
163 96000, 176400, 192000 },
164 .descriptor[0].num_sample_rates = 13,
165 .descriptor[0].bit_rate[0] = 320,
166 .descriptor[0].bit_rate[1] = 128,
167 .descriptor[0].num_bitrates = 2,
168 .descriptor[0].profiles = 0,
169 .descriptor[0].modes = SND_AUDIOCHANMODE_MP3_STEREO,
170 .descriptor[0].formats = 0,
171 };
172
173 static void event_handler(uint32_t opcode, uint32_t token,
174 uint32_t *payload, void *priv)
175 {
176 struct q6asm_dai_rtd *prtd = priv;
177 struct snd_pcm_substream *substream = prtd->substream;
178
179 switch (opcode) {
180 case ASM_CLIENT_EVENT_CMD_RUN_DONE:
181 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
182 q6asm_write_async(prtd->audio_client,
183 prtd->pcm_count, 0, 0, NO_TIMESTAMP);
184 break;
185 case ASM_CLIENT_EVENT_CMD_EOS_DONE:
186 prtd->state = Q6ASM_STREAM_STOPPED;
187 break;
188 case ASM_CLIENT_EVENT_DATA_WRITE_DONE: {
189 prtd->pcm_irq_pos += prtd->pcm_count;
190 snd_pcm_period_elapsed(substream);
191 if (prtd->state == Q6ASM_STREAM_RUNNING)
192 q6asm_write_async(prtd->audio_client,
193 prtd->pcm_count, 0, 0, NO_TIMESTAMP);
194
195 break;
196 }
197 case ASM_CLIENT_EVENT_DATA_READ_DONE:
198 prtd->pcm_irq_pos += prtd->pcm_count;
199 snd_pcm_period_elapsed(substream);
200 if (prtd->state == Q6ASM_STREAM_RUNNING)
201 q6asm_read(prtd->audio_client);
202
203 break;
204 default:
205 break;
206 }
207 }
208
209 static int q6asm_dai_prepare(struct snd_pcm_substream *substream)
210 {
211 struct snd_pcm_runtime *runtime = substream->runtime;
212 struct snd_soc_pcm_runtime *soc_prtd = substream->private_data;
213 struct q6asm_dai_rtd *prtd = runtime->private_data;
214 struct snd_soc_component *c = snd_soc_rtdcom_lookup(soc_prtd, DRV_NAME);
215 struct q6asm_dai_data *pdata;
216 int ret, i;
217
218 pdata = snd_soc_component_get_drvdata(c);
219 if (!pdata)
220 return -EINVAL;
221
222 if (!prtd || !prtd->audio_client) {
223 pr_err("%s: private data null or audio client freed\n",
224 __func__);
225 return -EINVAL;
226 }
227
228 prtd->pcm_count = snd_pcm_lib_period_bytes(substream);
229 prtd->pcm_irq_pos = 0;
230
231 if (prtd->state) {
232
233 q6asm_cmd(prtd->audio_client, CMD_CLOSE);
234 q6asm_unmap_memory_regions(substream->stream,
235 prtd->audio_client);
236 q6routing_stream_close(soc_prtd->dai_link->id,
237 substream->stream);
238 }
239
240 ret = q6asm_map_memory_regions(substream->stream, prtd->audio_client,
241 prtd->phys,
242 (prtd->pcm_size / prtd->periods),
243 prtd->periods);
244
245 if (ret < 0) {
246 pr_err("Audio Start: Buffer Allocation failed rc = %d\n",
247 ret);
248 return -ENOMEM;
249 }
250
251 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
252 ret = q6asm_open_write(prtd->audio_client, FORMAT_LINEAR_PCM,
253 prtd->bits_per_sample);
254 } else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
255 ret = q6asm_open_read(prtd->audio_client, FORMAT_LINEAR_PCM,
256 prtd->bits_per_sample);
257 }
258
259 if (ret < 0) {
260 pr_err("%s: q6asm_open_write failed\n", __func__);
261 q6asm_audio_client_free(prtd->audio_client);
262 prtd->audio_client = NULL;
263 return -ENOMEM;
264 }
265
266 prtd->session_id = q6asm_get_session_id(prtd->audio_client);
267 ret = q6routing_stream_open(soc_prtd->dai_link->id, LEGACY_PCM_MODE,
268 prtd->session_id, substream->stream);
269 if (ret) {
270 pr_err("%s: stream reg failed ret:%d\n", __func__, ret);
271 return ret;
272 }
273
274 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
275 ret = q6asm_media_format_block_multi_ch_pcm(
276 prtd->audio_client, runtime->rate,
277 runtime->channels, NULL,
278 prtd->bits_per_sample);
279 } else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
280 ret = q6asm_enc_cfg_blk_pcm_format_support(prtd->audio_client,
281 runtime->rate, runtime->channels,
282 prtd->bits_per_sample);
283
284
285 for (i = 0; i < runtime->periods; i++)
286 q6asm_read(prtd->audio_client);
287
288 }
289 if (ret < 0)
290 pr_info("%s: CMD Format block failed\n", __func__);
291
292 prtd->state = Q6ASM_STREAM_RUNNING;
293
294 return 0;
295 }
296
297 static int q6asm_dai_trigger(struct snd_pcm_substream *substream, int cmd)
298 {
299 int ret = 0;
300 struct snd_pcm_runtime *runtime = substream->runtime;
301 struct q6asm_dai_rtd *prtd = runtime->private_data;
302
303 switch (cmd) {
304 case SNDRV_PCM_TRIGGER_START:
305 case SNDRV_PCM_TRIGGER_RESUME:
306 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
307 ret = q6asm_run_nowait(prtd->audio_client, 0, 0, 0);
308 break;
309 case SNDRV_PCM_TRIGGER_STOP:
310 prtd->state = Q6ASM_STREAM_STOPPED;
311 ret = q6asm_cmd_nowait(prtd->audio_client, CMD_EOS);
312 break;
313 case SNDRV_PCM_TRIGGER_SUSPEND:
314 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
315 ret = q6asm_cmd_nowait(prtd->audio_client, CMD_PAUSE);
316 break;
317 default:
318 ret = -EINVAL;
319 break;
320 }
321
322 return ret;
323 }
324
325 static int q6asm_dai_open(struct snd_pcm_substream *substream)
326 {
327 struct snd_pcm_runtime *runtime = substream->runtime;
328 struct snd_soc_pcm_runtime *soc_prtd = substream->private_data;
329 struct snd_soc_dai *cpu_dai = soc_prtd->cpu_dai;
330 struct snd_soc_component *c = snd_soc_rtdcom_lookup(soc_prtd, DRV_NAME);
331 struct q6asm_dai_rtd *prtd;
332 struct q6asm_dai_data *pdata;
333 struct device *dev = c->dev;
334 int ret = 0;
335 int stream_id;
336
337 stream_id = cpu_dai->driver->id;
338
339 pdata = snd_soc_component_get_drvdata(c);
340 if (!pdata) {
341 pr_err("Drv data not found ..\n");
342 return -EINVAL;
343 }
344
345 prtd = kzalloc(sizeof(struct q6asm_dai_rtd), GFP_KERNEL);
346 if (prtd == NULL)
347 return -ENOMEM;
348
349 prtd->substream = substream;
350 prtd->audio_client = q6asm_audio_client_alloc(dev,
351 (q6asm_cb)event_handler, prtd, stream_id,
352 LEGACY_PCM_MODE);
353 if (IS_ERR(prtd->audio_client)) {
354 pr_info("%s: Could not allocate memory\n", __func__);
355 ret = PTR_ERR(prtd->audio_client);
356 kfree(prtd);
357 return ret;
358 }
359
360 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
361 runtime->hw = q6asm_dai_hardware_playback;
362 else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
363 runtime->hw = q6asm_dai_hardware_capture;
364
365 ret = snd_pcm_hw_constraint_list(runtime, 0,
366 SNDRV_PCM_HW_PARAM_RATE,
367 &constraints_sample_rates);
368 if (ret < 0)
369 pr_info("snd_pcm_hw_constraint_list failed\n");
370
371 ret = snd_pcm_hw_constraint_integer(runtime,
372 SNDRV_PCM_HW_PARAM_PERIODS);
373 if (ret < 0)
374 pr_info("snd_pcm_hw_constraint_integer failed\n");
375
376 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
377 ret = snd_pcm_hw_constraint_minmax(runtime,
378 SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
379 PLAYBACK_MIN_NUM_PERIODS * PLAYBACK_MIN_PERIOD_SIZE,
380 PLAYBACK_MAX_NUM_PERIODS * PLAYBACK_MAX_PERIOD_SIZE);
381 if (ret < 0) {
382 pr_err("constraint for buffer bytes min max ret = %d\n",
383 ret);
384 }
385 }
386
387 ret = snd_pcm_hw_constraint_step(runtime, 0,
388 SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
389 if (ret < 0) {
390 pr_err("constraint for period bytes step ret = %d\n",
391 ret);
392 }
393 ret = snd_pcm_hw_constraint_step(runtime, 0,
394 SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 32);
395 if (ret < 0) {
396 pr_err("constraint for buffer bytes step ret = %d\n",
397 ret);
398 }
399
400 runtime->private_data = prtd;
401
402 snd_soc_set_runtime_hwparams(substream, &q6asm_dai_hardware_playback);
403
404 runtime->dma_bytes = q6asm_dai_hardware_playback.buffer_bytes_max;
405
406
407 if (pdata->sid < 0)
408 prtd->phys = substream->dma_buffer.addr;
409 else
410 prtd->phys = substream->dma_buffer.addr | (pdata->sid << 32);
411
412 snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
413
414 return 0;
415 }
416
417 static int q6asm_dai_close(struct snd_pcm_substream *substream)
418 {
419 struct snd_pcm_runtime *runtime = substream->runtime;
420 struct snd_soc_pcm_runtime *soc_prtd = substream->private_data;
421 struct q6asm_dai_rtd *prtd = runtime->private_data;
422
423 if (prtd->audio_client) {
424 if (prtd->state)
425 q6asm_cmd(prtd->audio_client, CMD_CLOSE);
426
427 q6asm_unmap_memory_regions(substream->stream,
428 prtd->audio_client);
429 q6asm_audio_client_free(prtd->audio_client);
430 prtd->audio_client = NULL;
431 }
432 q6routing_stream_close(soc_prtd->dai_link->id,
433 substream->stream);
434 kfree(prtd);
435 return 0;
436 }
437
438 static snd_pcm_uframes_t q6asm_dai_pointer(struct snd_pcm_substream *substream)
439 {
440
441 struct snd_pcm_runtime *runtime = substream->runtime;
442 struct q6asm_dai_rtd *prtd = runtime->private_data;
443
444 if (prtd->pcm_irq_pos >= prtd->pcm_size)
445 prtd->pcm_irq_pos = 0;
446
447 return bytes_to_frames(runtime, (prtd->pcm_irq_pos));
448 }
449
450 static int q6asm_dai_mmap(struct snd_pcm_substream *substream,
451 struct vm_area_struct *vma)
452 {
453
454 struct snd_pcm_runtime *runtime = substream->runtime;
455 struct snd_soc_pcm_runtime *soc_prtd = substream->private_data;
456 struct snd_soc_component *c = snd_soc_rtdcom_lookup(soc_prtd, DRV_NAME);
457 struct device *dev = c->dev;
458
459 return dma_mmap_coherent(dev, vma,
460 runtime->dma_area, runtime->dma_addr,
461 runtime->dma_bytes);
462 }
463
464 static int q6asm_dai_hw_params(struct snd_pcm_substream *substream,
465 struct snd_pcm_hw_params *params)
466 {
467 struct snd_pcm_runtime *runtime = substream->runtime;
468 struct q6asm_dai_rtd *prtd = runtime->private_data;
469
470 prtd->pcm_size = params_buffer_bytes(params);
471 prtd->periods = params_periods(params);
472
473 switch (params_format(params)) {
474 case SNDRV_PCM_FORMAT_S16_LE:
475 prtd->bits_per_sample = 16;
476 break;
477 case SNDRV_PCM_FORMAT_S24_LE:
478 prtd->bits_per_sample = 24;
479 break;
480 }
481
482 return 0;
483 }
484
485 static struct snd_pcm_ops q6asm_dai_ops = {
486 .open = q6asm_dai_open,
487 .hw_params = q6asm_dai_hw_params,
488 .close = q6asm_dai_close,
489 .ioctl = snd_pcm_lib_ioctl,
490 .prepare = q6asm_dai_prepare,
491 .trigger = q6asm_dai_trigger,
492 .pointer = q6asm_dai_pointer,
493 .mmap = q6asm_dai_mmap,
494 };
495
496 static void compress_event_handler(uint32_t opcode, uint32_t token,
497 uint32_t *payload, void *priv)
498 {
499 struct q6asm_dai_rtd *prtd = priv;
500 struct snd_compr_stream *substream = prtd->cstream;
501 unsigned long flags;
502 uint64_t avail;
503
504 switch (opcode) {
505 case ASM_CLIENT_EVENT_CMD_RUN_DONE:
506 spin_lock_irqsave(&prtd->lock, flags);
507 if (!prtd->bytes_sent) {
508 q6asm_write_async(prtd->audio_client, prtd->pcm_count,
509 0, 0, NO_TIMESTAMP);
510 prtd->bytes_sent += prtd->pcm_count;
511 }
512
513 spin_unlock_irqrestore(&prtd->lock, flags);
514 break;
515
516 case ASM_CLIENT_EVENT_CMD_EOS_DONE:
517 prtd->state = Q6ASM_STREAM_STOPPED;
518 break;
519
520 case ASM_CLIENT_EVENT_DATA_WRITE_DONE:
521 spin_lock_irqsave(&prtd->lock, flags);
522
523 prtd->copied_total += prtd->pcm_count;
524 snd_compr_fragment_elapsed(substream);
525
526 if (prtd->state != Q6ASM_STREAM_RUNNING) {
527 spin_unlock_irqrestore(&prtd->lock, flags);
528 break;
529 }
530
531 avail = prtd->bytes_received - prtd->bytes_sent;
532
533 if (avail >= prtd->pcm_count) {
534 q6asm_write_async(prtd->audio_client,
535 prtd->pcm_count, 0, 0, NO_TIMESTAMP);
536 prtd->bytes_sent += prtd->pcm_count;
537 }
538
539 spin_unlock_irqrestore(&prtd->lock, flags);
540 break;
541
542 default:
543 break;
544 }
545 }
546
547 static int q6asm_dai_compr_open(struct snd_compr_stream *stream)
548 {
549 struct snd_soc_pcm_runtime *rtd = stream->private_data;
550 struct snd_soc_component *c = snd_soc_rtdcom_lookup(rtd, DRV_NAME);
551 struct snd_compr_runtime *runtime = stream->runtime;
552 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
553 struct q6asm_dai_data *pdata;
554 struct device *dev = c->dev;
555 struct q6asm_dai_rtd *prtd;
556 int stream_id, size, ret;
557
558 stream_id = cpu_dai->driver->id;
559 pdata = snd_soc_component_get_drvdata(c);
560 if (!pdata) {
561 dev_err(dev, "Drv data not found ..\n");
562 return -EINVAL;
563 }
564
565 prtd = kzalloc(sizeof(*prtd), GFP_KERNEL);
566 if (!prtd)
567 return -ENOMEM;
568
569 prtd->cstream = stream;
570 prtd->audio_client = q6asm_audio_client_alloc(dev,
571 (q6asm_cb)compress_event_handler,
572 prtd, stream_id, LEGACY_PCM_MODE);
573 if (IS_ERR(prtd->audio_client)) {
574 dev_err(dev, "Could not allocate memory\n");
575 ret = PTR_ERR(prtd->audio_client);
576 goto free_prtd;
577 }
578
579 size = COMPR_PLAYBACK_MAX_FRAGMENT_SIZE *
580 COMPR_PLAYBACK_MAX_NUM_FRAGMENTS;
581 ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dev, size,
582 &prtd->dma_buffer);
583 if (ret) {
584 dev_err(dev, "Cannot allocate buffer(s)\n");
585 goto free_client;
586 }
587
588 if (pdata->sid < 0)
589 prtd->phys = prtd->dma_buffer.addr;
590 else
591 prtd->phys = prtd->dma_buffer.addr | (pdata->sid << 32);
592
593 snd_compr_set_runtime_buffer(stream, &prtd->dma_buffer);
594 spin_lock_init(&prtd->lock);
595 runtime->private_data = prtd;
596
597 return 0;
598
599 free_client:
600 q6asm_audio_client_free(prtd->audio_client);
601 free_prtd:
602 kfree(prtd);
603
604 return ret;
605 }
606
607 static int q6asm_dai_compr_free(struct snd_compr_stream *stream)
608 {
609 struct snd_compr_runtime *runtime = stream->runtime;
610 struct q6asm_dai_rtd *prtd = runtime->private_data;
611 struct snd_soc_pcm_runtime *rtd = stream->private_data;
612
613 if (prtd->audio_client) {
614 if (prtd->state)
615 q6asm_cmd(prtd->audio_client, CMD_CLOSE);
616
617 snd_dma_free_pages(&prtd->dma_buffer);
618 q6asm_unmap_memory_regions(stream->direction,
619 prtd->audio_client);
620 q6asm_audio_client_free(prtd->audio_client);
621 prtd->audio_client = NULL;
622 }
623 q6routing_stream_close(rtd->dai_link->id, stream->direction);
624 kfree(prtd);
625
626 return 0;
627 }
628
629 static int q6asm_dai_compr_set_params(struct snd_compr_stream *stream,
630 struct snd_compr_params *params)
631 {
632 struct snd_compr_runtime *runtime = stream->runtime;
633 struct q6asm_dai_rtd *prtd = runtime->private_data;
634 struct snd_soc_pcm_runtime *rtd = stream->private_data;
635 struct snd_soc_component *c = snd_soc_rtdcom_lookup(rtd, DRV_NAME);
636 int dir = stream->direction;
637 struct q6asm_dai_data *pdata;
638 struct device *dev = c->dev;
639 int ret;
640
641 memcpy(&prtd->codec_param, params, sizeof(*params));
642
643 pdata = snd_soc_component_get_drvdata(c);
644 if (!pdata)
645 return -EINVAL;
646
647 if (!prtd || !prtd->audio_client) {
648 dev_err(dev, "private data null or audio client freed\n");
649 return -EINVAL;
650 }
651
652 prtd->periods = runtime->fragments;
653 prtd->pcm_count = runtime->fragment_size;
654 prtd->pcm_size = runtime->fragments * runtime->fragment_size;
655 prtd->bits_per_sample = 16;
656 if (dir == SND_COMPRESS_PLAYBACK) {
657 ret = q6asm_open_write(prtd->audio_client, params->codec.id,
658 prtd->bits_per_sample);
659
660 if (ret < 0) {
661 dev_err(dev, "q6asm_open_write failed\n");
662 q6asm_audio_client_free(prtd->audio_client);
663 prtd->audio_client = NULL;
664 return ret;
665 }
666 }
667
668 prtd->session_id = q6asm_get_session_id(prtd->audio_client);
669 ret = q6routing_stream_open(rtd->dai_link->id, LEGACY_PCM_MODE,
670 prtd->session_id, dir);
671 if (ret) {
672 dev_err(dev, "Stream reg failed ret:%d\n", ret);
673 return ret;
674 }
675
676 ret = q6asm_map_memory_regions(dir, prtd->audio_client, prtd->phys,
677 (prtd->pcm_size / prtd->periods),
678 prtd->periods);
679
680 if (ret < 0) {
681 dev_err(dev, "Buffer Mapping failed ret:%d\n", ret);
682 return -ENOMEM;
683 }
684
685 prtd->state = Q6ASM_STREAM_RUNNING;
686
687 return 0;
688 }
689
690 static int q6asm_dai_compr_trigger(struct snd_compr_stream *stream, int cmd)
691 {
692 struct snd_compr_runtime *runtime = stream->runtime;
693 struct q6asm_dai_rtd *prtd = runtime->private_data;
694 int ret = 0;
695
696 switch (cmd) {
697 case SNDRV_PCM_TRIGGER_START:
698 case SNDRV_PCM_TRIGGER_RESUME:
699 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
700 ret = q6asm_run_nowait(prtd->audio_client, 0, 0, 0);
701 break;
702 case SNDRV_PCM_TRIGGER_STOP:
703 prtd->state = Q6ASM_STREAM_STOPPED;
704 ret = q6asm_cmd_nowait(prtd->audio_client, CMD_EOS);
705 break;
706 case SNDRV_PCM_TRIGGER_SUSPEND:
707 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
708 ret = q6asm_cmd_nowait(prtd->audio_client, CMD_PAUSE);
709 break;
710 default:
711 ret = -EINVAL;
712 break;
713 }
714
715 return ret;
716 }
717
718 static int q6asm_dai_compr_pointer(struct snd_compr_stream *stream,
719 struct snd_compr_tstamp *tstamp)
720 {
721 struct snd_compr_runtime *runtime = stream->runtime;
722 struct q6asm_dai_rtd *prtd = runtime->private_data;
723 unsigned long flags;
724
725 spin_lock_irqsave(&prtd->lock, flags);
726
727 tstamp->copied_total = prtd->copied_total;
728 tstamp->byte_offset = prtd->copied_total % prtd->pcm_size;
729
730 spin_unlock_irqrestore(&prtd->lock, flags);
731
732 return 0;
733 }
734
735 static int q6asm_dai_compr_ack(struct snd_compr_stream *stream,
736 size_t count)
737 {
738 struct snd_compr_runtime *runtime = stream->runtime;
739 struct q6asm_dai_rtd *prtd = runtime->private_data;
740 unsigned long flags;
741
742 spin_lock_irqsave(&prtd->lock, flags);
743 prtd->bytes_received += count;
744 spin_unlock_irqrestore(&prtd->lock, flags);
745
746 return count;
747 }
748
749 static int q6asm_dai_compr_mmap(struct snd_compr_stream *stream,
750 struct vm_area_struct *vma)
751 {
752 struct snd_compr_runtime *runtime = stream->runtime;
753 struct q6asm_dai_rtd *prtd = runtime->private_data;
754 struct snd_soc_pcm_runtime *rtd = stream->private_data;
755 struct snd_soc_component *c = snd_soc_rtdcom_lookup(rtd, DRV_NAME);
756 struct device *dev = c->dev;
757
758 return dma_mmap_coherent(dev, vma,
759 prtd->dma_buffer.area, prtd->dma_buffer.addr,
760 prtd->dma_buffer.bytes);
761 }
762
763 static int q6asm_dai_compr_get_caps(struct snd_compr_stream *stream,
764 struct snd_compr_caps *caps)
765 {
766 caps->direction = SND_COMPRESS_PLAYBACK;
767 caps->min_fragment_size = COMPR_PLAYBACK_MIN_FRAGMENT_SIZE;
768 caps->max_fragment_size = COMPR_PLAYBACK_MAX_FRAGMENT_SIZE;
769 caps->min_fragments = COMPR_PLAYBACK_MIN_NUM_FRAGMENTS;
770 caps->max_fragments = COMPR_PLAYBACK_MAX_NUM_FRAGMENTS;
771 caps->num_codecs = 1;
772 caps->codecs[0] = SND_AUDIOCODEC_MP3;
773
774 return 0;
775 }
776
777 static int q6asm_dai_compr_get_codec_caps(struct snd_compr_stream *stream,
778 struct snd_compr_codec_caps *codec)
779 {
780 switch (codec->codec) {
781 case SND_AUDIOCODEC_MP3:
782 *codec = q6asm_compr_caps;
783 break;
784 default:
785 break;
786 }
787
788 return 0;
789 }
790
791 static struct snd_compr_ops q6asm_dai_compr_ops = {
792 .open = q6asm_dai_compr_open,
793 .free = q6asm_dai_compr_free,
794 .set_params = q6asm_dai_compr_set_params,
795 .pointer = q6asm_dai_compr_pointer,
796 .trigger = q6asm_dai_compr_trigger,
797 .get_caps = q6asm_dai_compr_get_caps,
798 .get_codec_caps = q6asm_dai_compr_get_codec_caps,
799 .mmap = q6asm_dai_compr_mmap,
800 .ack = q6asm_dai_compr_ack,
801 };
802
803 static int q6asm_dai_pcm_new(struct snd_soc_pcm_runtime *rtd)
804 {
805 struct snd_pcm_substream *psubstream, *csubstream;
806 struct snd_soc_component *c = snd_soc_rtdcom_lookup(rtd, DRV_NAME);
807 struct snd_pcm *pcm = rtd->pcm;
808 struct device *dev;
809 int size, ret;
810
811 dev = c->dev;
812 size = q6asm_dai_hardware_playback.buffer_bytes_max;
813 psubstream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
814 if (psubstream) {
815 ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dev, size,
816 &psubstream->dma_buffer);
817 if (ret) {
818 dev_err(dev, "Cannot allocate buffer(s)\n");
819 return ret;
820 }
821 }
822
823 csubstream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
824 if (csubstream) {
825 ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dev, size,
826 &csubstream->dma_buffer);
827 if (ret) {
828 dev_err(dev, "Cannot allocate buffer(s)\n");
829 if (psubstream)
830 snd_dma_free_pages(&psubstream->dma_buffer);
831 return ret;
832 }
833 }
834
835 return 0;
836 }
837
838 static void q6asm_dai_pcm_free(struct snd_pcm *pcm)
839 {
840 struct snd_pcm_substream *substream;
841 int i;
842
843 for (i = 0; i < ARRAY_SIZE(pcm->streams); i++) {
844 substream = pcm->streams[i].substream;
845 if (substream) {
846 snd_dma_free_pages(&substream->dma_buffer);
847 substream->dma_buffer.area = NULL;
848 substream->dma_buffer.addr = 0;
849 }
850 }
851 }
852
853 static const struct snd_soc_component_driver q6asm_fe_dai_component = {
854 .name = DRV_NAME,
855 .ops = &q6asm_dai_ops,
856 .pcm_new = q6asm_dai_pcm_new,
857 .pcm_free = q6asm_dai_pcm_free,
858 .compr_ops = &q6asm_dai_compr_ops,
859 };
860
861 static struct snd_soc_dai_driver q6asm_fe_dais[] = {
862 Q6ASM_FEDAI_DRIVER(1),
863 Q6ASM_FEDAI_DRIVER(2),
864 Q6ASM_FEDAI_DRIVER(3),
865 Q6ASM_FEDAI_DRIVER(4),
866 Q6ASM_FEDAI_DRIVER(5),
867 Q6ASM_FEDAI_DRIVER(6),
868 Q6ASM_FEDAI_DRIVER(7),
869 Q6ASM_FEDAI_DRIVER(8),
870 };
871
872 static int of_q6asm_parse_dai_data(struct device *dev,
873 struct q6asm_dai_data *pdata)
874 {
875 static struct snd_soc_dai_driver *dai_drv;
876 struct snd_soc_pcm_stream empty_stream;
877 struct device_node *node;
878 int ret, id, dir;
879
880 memset(&empty_stream, 0, sizeof(empty_stream));
881
882 for_each_child_of_node(dev->of_node, node) {
883 ret = of_property_read_u32(node, "reg", &id);
884 if (ret || id >= MAX_SESSIONS || id < 0) {
885 dev_err(dev, "valid dai id not found:%d\n", ret);
886 continue;
887 }
888
889 dai_drv = &q6asm_fe_dais[id];
890
891 ret = of_property_read_u32(node, "direction", &dir);
892 if (ret)
893 continue;
894
895 if (dir == Q6ASM_DAI_RX)
896 dai_drv->capture = empty_stream;
897 else if (dir == Q6ASM_DAI_TX)
898 dai_drv->playback = empty_stream;
899
900 if (of_property_read_bool(node, "is-compress-dai"))
901 dai_drv->compress_new = snd_soc_new_compress;
902 }
903
904 return 0;
905 }
906
907 static int q6asm_dai_probe(struct platform_device *pdev)
908 {
909 struct device *dev = &pdev->dev;
910 struct device_node *node = dev->of_node;
911 struct of_phandle_args args;
912 struct q6asm_dai_data *pdata;
913 int rc;
914
915 pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
916 if (!pdata)
917 return -ENOMEM;
918
919 rc = of_parse_phandle_with_fixed_args(node, "iommus", 1, 0, &args);
920 if (rc < 0)
921 pdata->sid = -1;
922 else
923 pdata->sid = args.args[0] & SID_MASK_DEFAULT;
924
925 dev_set_drvdata(dev, pdata);
926
927 of_q6asm_parse_dai_data(dev, pdata);
928
929 return devm_snd_soc_register_component(dev, &q6asm_fe_dai_component,
930 q6asm_fe_dais,
931 ARRAY_SIZE(q6asm_fe_dais));
932 }
933
934 static const struct of_device_id q6asm_dai_device_id[] = {
935 { .compatible = "qcom,q6asm-dais" },
936 {},
937 };
938 MODULE_DEVICE_TABLE(of, q6asm_dai_device_id);
939
940 static struct platform_driver q6asm_dai_platform_driver = {
941 .driver = {
942 .name = "q6asm-dai",
943 .of_match_table = of_match_ptr(q6asm_dai_device_id),
944 },
945 .probe = q6asm_dai_probe,
946 };
947 module_platform_driver(q6asm_dai_platform_driver);
948
949 MODULE_DESCRIPTION("Q6ASM dai driver");
950 MODULE_LICENSE("GPL v2");