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 <asm/dma.h>
14#include <linux/dma-mapping.h>
15#include <linux/of_device.h>
16#include <sound/pcm_params.h>
17#include "q6asm.h"
18#include "q6routing.h"
19#include "q6dsp-errno.h"
20
21#define DRV_NAME "q6asm-fe-dai"
22
23#define PLAYBACK_MIN_NUM_PERIODS 2
24#define PLAYBACK_MAX_NUM_PERIODS 8
25#define PLAYBACK_MAX_PERIOD_SIZE 65536
26#define PLAYBACK_MIN_PERIOD_SIZE 128
27#define CAPTURE_MIN_NUM_PERIODS 2
28#define CAPTURE_MAX_NUM_PERIODS 8
29#define CAPTURE_MAX_PERIOD_SIZE 4096
30#define CAPTURE_MIN_PERIOD_SIZE 320
31#define SID_MASK_DEFAULT 0xF
32
33enum stream_state {
34 Q6ASM_STREAM_IDLE = 0,
35 Q6ASM_STREAM_STOPPED,
36 Q6ASM_STREAM_RUNNING,
37};
38
39struct q6asm_dai_rtd {
40 struct snd_pcm_substream *substream;
41 phys_addr_t phys;
42 unsigned int pcm_size;
43 unsigned int pcm_count;
44 unsigned int pcm_irq_pos;
45 unsigned int periods;
46 uint16_t bits_per_sample;
47 uint16_t source;
48 struct audio_client *audio_client;
49 uint16_t session_id;
50 enum stream_state state;
51};
52
53struct q6asm_dai_data {
54 long long int sid;
55};
56
57static struct snd_pcm_hardware q6asm_dai_hardware_capture = {
58 .info = (SNDRV_PCM_INFO_MMAP |
59 SNDRV_PCM_INFO_BLOCK_TRANSFER |
60 SNDRV_PCM_INFO_MMAP_VALID |
61 SNDRV_PCM_INFO_INTERLEAVED |
62 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME),
63 .formats = (SNDRV_PCM_FMTBIT_S16_LE |
64 SNDRV_PCM_FMTBIT_S24_LE),
65 .rates = SNDRV_PCM_RATE_8000_48000,
66 .rate_min = 8000,
67 .rate_max = 48000,
68 .channels_min = 1,
69 .channels_max = 4,
70 .buffer_bytes_max = CAPTURE_MAX_NUM_PERIODS *
71 CAPTURE_MAX_PERIOD_SIZE,
72 .period_bytes_min = CAPTURE_MIN_PERIOD_SIZE,
73 .period_bytes_max = CAPTURE_MAX_PERIOD_SIZE,
74 .periods_min = CAPTURE_MIN_NUM_PERIODS,
75 .periods_max = CAPTURE_MAX_NUM_PERIODS,
76 .fifo_size = 0,
77};
78
79static struct snd_pcm_hardware q6asm_dai_hardware_playback = {
80 .info = (SNDRV_PCM_INFO_MMAP |
81 SNDRV_PCM_INFO_BLOCK_TRANSFER |
82 SNDRV_PCM_INFO_MMAP_VALID |
83 SNDRV_PCM_INFO_INTERLEAVED |
84 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME),
85 .formats = (SNDRV_PCM_FMTBIT_S16_LE |
86 SNDRV_PCM_FMTBIT_S24_LE),
87 .rates = SNDRV_PCM_RATE_8000_192000,
88 .rate_min = 8000,
89 .rate_max = 192000,
90 .channels_min = 1,
91 .channels_max = 8,
92 .buffer_bytes_max = (PLAYBACK_MAX_NUM_PERIODS *
93 PLAYBACK_MAX_PERIOD_SIZE),
94 .period_bytes_min = PLAYBACK_MIN_PERIOD_SIZE,
95 .period_bytes_max = PLAYBACK_MAX_PERIOD_SIZE,
96 .periods_min = PLAYBACK_MIN_NUM_PERIODS,
97 .periods_max = PLAYBACK_MAX_NUM_PERIODS,
98 .fifo_size = 0,
99};
100
101#define Q6ASM_FEDAI_DRIVER(num) { \
102 .playback = { \
103 .stream_name = "MultiMedia"#num" Playback", \
104 .rates = (SNDRV_PCM_RATE_8000_192000| \
105 SNDRV_PCM_RATE_KNOT), \
106 .formats = (SNDRV_PCM_FMTBIT_S16_LE | \
107 SNDRV_PCM_FMTBIT_S24_LE), \
108 .channels_min = 1, \
109 .channels_max = 8, \
110 .rate_min = 8000, \
111 .rate_max = 192000, \
112 }, \
113 .capture = { \
114 .stream_name = "MultiMedia"#num" Capture", \
115 .rates = (SNDRV_PCM_RATE_8000_48000| \
116 SNDRV_PCM_RATE_KNOT), \
117 .formats = (SNDRV_PCM_FMTBIT_S16_LE | \
118 SNDRV_PCM_FMTBIT_S24_LE), \
119 .channels_min = 1, \
120 .channels_max = 4, \
121 .rate_min = 8000, \
122 .rate_max = 48000, \
123 }, \
124 .name = "MultiMedia"#num, \
125 .id = MSM_FRONTEND_DAI_MULTIMEDIA##num, \
126 }
127
128
129static unsigned int supported_sample_rates[] = {
130 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000,
131 88200, 96000, 176400, 192000
132};
133
134static struct snd_pcm_hw_constraint_list constraints_sample_rates = {
135 .count = ARRAY_SIZE(supported_sample_rates),
136 .list = supported_sample_rates,
137 .mask = 0,
138};
139
140static void event_handler(uint32_t opcode, uint32_t token,
141 uint32_t *payload, void *priv)
142{
143 struct q6asm_dai_rtd *prtd = priv;
144 struct snd_pcm_substream *substream = prtd->substream;
145
146 switch (opcode) {
147 case ASM_CLIENT_EVENT_CMD_RUN_DONE:
148 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
149 q6asm_write_async(prtd->audio_client,
150 prtd->pcm_count, 0, 0, NO_TIMESTAMP);
151 break;
152 case ASM_CLIENT_EVENT_CMD_EOS_DONE:
153 prtd->state = Q6ASM_STREAM_STOPPED;
154 break;
155 case ASM_CLIENT_EVENT_DATA_WRITE_DONE: {
156 prtd->pcm_irq_pos += prtd->pcm_count;
157 snd_pcm_period_elapsed(substream);
158 if (prtd->state == Q6ASM_STREAM_RUNNING)
159 q6asm_write_async(prtd->audio_client,
160 prtd->pcm_count, 0, 0, NO_TIMESTAMP);
161
162 break;
163 }
164 case ASM_CLIENT_EVENT_DATA_READ_DONE:
165 prtd->pcm_irq_pos += prtd->pcm_count;
166 snd_pcm_period_elapsed(substream);
167 if (prtd->state == Q6ASM_STREAM_RUNNING)
168 q6asm_read(prtd->audio_client);
169
170 break;
171 default:
172 break;
173 }
174}
175
176static int q6asm_dai_prepare(struct snd_pcm_substream *substream)
177{
178 struct snd_pcm_runtime *runtime = substream->runtime;
179 struct snd_soc_pcm_runtime *soc_prtd = substream->private_data;
180 struct q6asm_dai_rtd *prtd = runtime->private_data;
181 struct snd_soc_component *c = snd_soc_rtdcom_lookup(soc_prtd, DRV_NAME);
182 struct q6asm_dai_data *pdata;
183 int ret, i;
184
185 pdata = snd_soc_component_get_drvdata(c);
186 if (!pdata)
187 return -EINVAL;
188
189 if (!prtd || !prtd->audio_client) {
190 pr_err("%s: private data null or audio client freed\n",
191 __func__);
192 return -EINVAL;
193 }
194
195 prtd->pcm_count = snd_pcm_lib_period_bytes(substream);
196 prtd->pcm_irq_pos = 0;
197
198 if (prtd->state) {
199
200 q6asm_cmd(prtd->audio_client, CMD_CLOSE);
201 q6asm_unmap_memory_regions(substream->stream,
202 prtd->audio_client);
203 q6routing_stream_close(soc_prtd->dai_link->id,
204 substream->stream);
205 }
206
207 ret = q6asm_map_memory_regions(substream->stream, prtd->audio_client,
208 prtd->phys,
209 (prtd->pcm_size / prtd->periods),
210 prtd->periods);
211
212 if (ret < 0) {
213 pr_err("Audio Start: Buffer Allocation failed rc = %d\n",
214 ret);
215 return -ENOMEM;
216 }
217
218 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
219 ret = q6asm_open_write(prtd->audio_client, FORMAT_LINEAR_PCM,
220 prtd->bits_per_sample);
221 } else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
222 ret = q6asm_open_read(prtd->audio_client, FORMAT_LINEAR_PCM,
223 prtd->bits_per_sample);
224 }
225
226 if (ret < 0) {
227 pr_err("%s: q6asm_open_write failed\n", __func__);
228 q6asm_audio_client_free(prtd->audio_client);
229 prtd->audio_client = NULL;
230 return -ENOMEM;
231 }
232
233 prtd->session_id = q6asm_get_session_id(prtd->audio_client);
234 ret = q6routing_stream_open(soc_prtd->dai_link->id, LEGACY_PCM_MODE,
235 prtd->session_id, substream->stream);
236 if (ret) {
237 pr_err("%s: stream reg failed ret:%d\n", __func__, ret);
238 return ret;
239 }
240
241 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
242 ret = q6asm_media_format_block_multi_ch_pcm(
243 prtd->audio_client, runtime->rate,
244 runtime->channels, NULL,
245 prtd->bits_per_sample);
246 } else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
247 ret = q6asm_enc_cfg_blk_pcm_format_support(prtd->audio_client,
248 runtime->rate, runtime->channels,
249 prtd->bits_per_sample);
250
251
252 for (i = 0; i < runtime->periods; i++)
253 q6asm_read(prtd->audio_client);
254
255 }
256 if (ret < 0)
257 pr_info("%s: CMD Format block failed\n", __func__);
258
259 prtd->state = Q6ASM_STREAM_RUNNING;
260
261 return 0;
262}
263
264static int q6asm_dai_trigger(struct snd_pcm_substream *substream, int cmd)
265{
266 int ret = 0;
267 struct snd_pcm_runtime *runtime = substream->runtime;
268 struct q6asm_dai_rtd *prtd = runtime->private_data;
269
270 switch (cmd) {
271 case SNDRV_PCM_TRIGGER_START:
272 case SNDRV_PCM_TRIGGER_RESUME:
273 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
274 ret = q6asm_run_nowait(prtd->audio_client, 0, 0, 0);
275 break;
276 case SNDRV_PCM_TRIGGER_STOP:
277 prtd->state = Q6ASM_STREAM_STOPPED;
278 ret = q6asm_cmd_nowait(prtd->audio_client, CMD_EOS);
279 break;
280 case SNDRV_PCM_TRIGGER_SUSPEND:
281 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
282 ret = q6asm_cmd_nowait(prtd->audio_client, CMD_PAUSE);
283 break;
284 default:
285 ret = -EINVAL;
286 break;
287 }
288
289 return ret;
290}
291
292static int q6asm_dai_open(struct snd_pcm_substream *substream)
293{
294 struct snd_pcm_runtime *runtime = substream->runtime;
295 struct snd_soc_pcm_runtime *soc_prtd = substream->private_data;
296 struct snd_soc_dai *cpu_dai = soc_prtd->cpu_dai;
297 struct snd_soc_component *c = snd_soc_rtdcom_lookup(soc_prtd, DRV_NAME);
298 struct q6asm_dai_rtd *prtd;
299 struct q6asm_dai_data *pdata;
300 struct device *dev = c->dev;
301 int ret = 0;
302 int stream_id;
303
304 stream_id = cpu_dai->driver->id;
305
306 pdata = snd_soc_component_get_drvdata(c);
307 if (!pdata) {
308 pr_err("Drv data not found ..\n");
309 return -EINVAL;
310 }
311
312 prtd = kzalloc(sizeof(struct q6asm_dai_rtd), GFP_KERNEL);
313 if (prtd == NULL)
314 return -ENOMEM;
315
316 prtd->substream = substream;
317 prtd->audio_client = q6asm_audio_client_alloc(dev,
318 (q6asm_cb)event_handler, prtd, stream_id,
319 LEGACY_PCM_MODE);
320 if (IS_ERR(prtd->audio_client)) {
321 pr_info("%s: Could not allocate memory\n", __func__);
322 ret = PTR_ERR(prtd->audio_client);
323 kfree(prtd);
324 return ret;
325 }
326
327 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
328 runtime->hw = q6asm_dai_hardware_playback;
329 else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
330 runtime->hw = q6asm_dai_hardware_capture;
331
332 ret = snd_pcm_hw_constraint_list(runtime, 0,
333 SNDRV_PCM_HW_PARAM_RATE,
334 &constraints_sample_rates);
335 if (ret < 0)
336 pr_info("snd_pcm_hw_constraint_list failed\n");
337
338 ret = snd_pcm_hw_constraint_integer(runtime,
339 SNDRV_PCM_HW_PARAM_PERIODS);
340 if (ret < 0)
341 pr_info("snd_pcm_hw_constraint_integer failed\n");
342
343 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
344 ret = snd_pcm_hw_constraint_minmax(runtime,
345 SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
346 PLAYBACK_MIN_NUM_PERIODS * PLAYBACK_MIN_PERIOD_SIZE,
347 PLAYBACK_MAX_NUM_PERIODS * PLAYBACK_MAX_PERIOD_SIZE);
348 if (ret < 0) {
349 pr_err("constraint for buffer bytes min max ret = %d\n",
350 ret);
351 }
352 }
353
354 ret = snd_pcm_hw_constraint_step(runtime, 0,
355 SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
356 if (ret < 0) {
357 pr_err("constraint for period bytes step ret = %d\n",
358 ret);
359 }
360 ret = snd_pcm_hw_constraint_step(runtime, 0,
361 SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 32);
362 if (ret < 0) {
363 pr_err("constraint for buffer bytes step ret = %d\n",
364 ret);
365 }
366
367 runtime->private_data = prtd;
368
369 snd_soc_set_runtime_hwparams(substream, &q6asm_dai_hardware_playback);
370
371 runtime->dma_bytes = q6asm_dai_hardware_playback.buffer_bytes_max;
372
373
374 if (pdata->sid < 0)
375 prtd->phys = substream->dma_buffer.addr;
376 else
377 prtd->phys = substream->dma_buffer.addr | (pdata->sid << 32);
378
379 snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
380
381 return 0;
382}
383
384static int q6asm_dai_close(struct snd_pcm_substream *substream)
385{
386 struct snd_pcm_runtime *runtime = substream->runtime;
387 struct snd_soc_pcm_runtime *soc_prtd = substream->private_data;
388 struct q6asm_dai_rtd *prtd = runtime->private_data;
389
390 if (prtd->audio_client) {
391 if (prtd->state)
392 q6asm_cmd(prtd->audio_client, CMD_CLOSE);
393
394 q6asm_unmap_memory_regions(substream->stream,
395 prtd->audio_client);
396 q6asm_audio_client_free(prtd->audio_client);
397 prtd->audio_client = NULL;
398 }
399 q6routing_stream_close(soc_prtd->dai_link->id,
400 substream->stream);
401 kfree(prtd);
402 return 0;
403}
404
405static snd_pcm_uframes_t q6asm_dai_pointer(struct snd_pcm_substream *substream)
406{
407
408 struct snd_pcm_runtime *runtime = substream->runtime;
409 struct q6asm_dai_rtd *prtd = runtime->private_data;
410
411 if (prtd->pcm_irq_pos >= prtd->pcm_size)
412 prtd->pcm_irq_pos = 0;
413
414 return bytes_to_frames(runtime, (prtd->pcm_irq_pos));
415}
416
417static int q6asm_dai_mmap(struct snd_pcm_substream *substream,
418 struct vm_area_struct *vma)
419{
420
421 struct snd_pcm_runtime *runtime = substream->runtime;
422 struct snd_soc_pcm_runtime *soc_prtd = substream->private_data;
423 struct snd_soc_component *c = snd_soc_rtdcom_lookup(soc_prtd, DRV_NAME);
424 struct device *dev = c->dev;
425
426 return dma_mmap_coherent(dev, vma,
427 runtime->dma_area, runtime->dma_addr,
428 runtime->dma_bytes);
429}
430
431static int q6asm_dai_hw_params(struct snd_pcm_substream *substream,
432 struct snd_pcm_hw_params *params)
433{
434 struct snd_pcm_runtime *runtime = substream->runtime;
435 struct q6asm_dai_rtd *prtd = runtime->private_data;
436
437 prtd->pcm_size = params_buffer_bytes(params);
438 prtd->periods = params_periods(params);
439
440 switch (params_format(params)) {
441 case SNDRV_PCM_FORMAT_S16_LE:
442 prtd->bits_per_sample = 16;
443 break;
444 case SNDRV_PCM_FORMAT_S24_LE:
445 prtd->bits_per_sample = 24;
446 break;
447 }
448
449 return 0;
450}
451
452static struct snd_pcm_ops q6asm_dai_ops = {
453 .open = q6asm_dai_open,
454 .hw_params = q6asm_dai_hw_params,
455 .close = q6asm_dai_close,
456 .ioctl = snd_pcm_lib_ioctl,
457 .prepare = q6asm_dai_prepare,
458 .trigger = q6asm_dai_trigger,
459 .pointer = q6asm_dai_pointer,
460 .mmap = q6asm_dai_mmap,
461};
462
463static int q6asm_dai_pcm_new(struct snd_soc_pcm_runtime *rtd)
464{
465 struct snd_pcm_substream *psubstream, *csubstream;
466 struct snd_soc_component *c = snd_soc_rtdcom_lookup(rtd, DRV_NAME);
467 struct snd_pcm *pcm = rtd->pcm;
468 struct device *dev;
469 int size, ret;
470
471 dev = c->dev;
472 size = q6asm_dai_hardware_playback.buffer_bytes_max;
473 psubstream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
474 if (psubstream) {
475 ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dev, size,
476 &psubstream->dma_buffer);
477 if (ret) {
478 dev_err(dev, "Cannot allocate buffer(s)\n");
479 return ret;
480 }
481 }
482
483 csubstream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
484 if (csubstream) {
485 ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dev, size,
486 &csubstream->dma_buffer);
487 if (ret) {
488 dev_err(dev, "Cannot allocate buffer(s)\n");
489 if (psubstream)
490 snd_dma_free_pages(&psubstream->dma_buffer);
491 return ret;
492 }
493 }
494
495 return 0;
496}
497
498static void q6asm_dai_pcm_free(struct snd_pcm *pcm)
499{
500 struct snd_pcm_substream *substream;
501 int i;
502
503 for (i = 0; i < ARRAY_SIZE(pcm->streams); i++) {
504 substream = pcm->streams[i].substream;
505 if (substream) {
506 snd_dma_free_pages(&substream->dma_buffer);
507 substream->dma_buffer.area = NULL;
508 substream->dma_buffer.addr = 0;
509 }
510 }
511}
512
513static const struct snd_soc_component_driver q6asm_fe_dai_component = {
514 .name = DRV_NAME,
515 .ops = &q6asm_dai_ops,
516 .pcm_new = q6asm_dai_pcm_new,
517 .pcm_free = q6asm_dai_pcm_free,
518
519};
520
521static struct snd_soc_dai_driver q6asm_fe_dais[] = {
522 Q6ASM_FEDAI_DRIVER(1),
523 Q6ASM_FEDAI_DRIVER(2),
524 Q6ASM_FEDAI_DRIVER(3),
525 Q6ASM_FEDAI_DRIVER(4),
526 Q6ASM_FEDAI_DRIVER(5),
527 Q6ASM_FEDAI_DRIVER(6),
528 Q6ASM_FEDAI_DRIVER(7),
529 Q6ASM_FEDAI_DRIVER(8),
530};
531
532static int q6asm_dai_probe(struct platform_device *pdev)
533{
534 struct device *dev = &pdev->dev;
535 struct device_node *node = dev->of_node;
536 struct of_phandle_args args;
537 struct q6asm_dai_data *pdata;
538 int rc;
539
540 pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
541 if (!pdata)
542 return -ENOMEM;
543
544 rc = of_parse_phandle_with_fixed_args(node, "iommus", 1, 0, &args);
545 if (rc < 0)
546 pdata->sid = -1;
547 else
548 pdata->sid = args.args[0] & SID_MASK_DEFAULT;
549
550 dev_set_drvdata(dev, pdata);
551
552 return devm_snd_soc_register_component(dev, &q6asm_fe_dai_component,
553 q6asm_fe_dais,
554 ARRAY_SIZE(q6asm_fe_dais));
555}
556
557static const struct of_device_id q6asm_dai_device_id[] = {
558 { .compatible = "qcom,q6asm-dais" },
559 {},
560};
561MODULE_DEVICE_TABLE(of, q6asm_dai_device_id);
562
563static struct platform_driver q6asm_dai_platform_driver = {
564 .driver = {
565 .name = "q6asm-dai",
566 .of_match_table = of_match_ptr(q6asm_dai_device_id),
567 },
568 .probe = q6asm_dai_probe,
569};
570module_platform_driver(q6asm_dai_platform_driver);
571
572MODULE_DESCRIPTION("Q6ASM dai driver");
573MODULE_LICENSE("GPL v2");
574
