1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * Support for Digigram Lola PCI-e boards |
4 | * |
5 | * Copyright (c) 2011 Takashi Iwai <tiwai@suse.de> |
6 | */ |
7 | |
8 | #include <linux/kernel.h> |
9 | #include <linux/init.h> |
10 | #include <linux/dma-mapping.h> |
11 | #include <linux/pci.h> |
12 | #include <linux/delay.h> |
13 | #include <sound/core.h> |
14 | #include <sound/pcm.h> |
15 | #include "lola.h" |
16 | |
17 | #define LOLA_MAX_BDL_ENTRIES 8 |
18 | #define LOLA_MAX_BUF_SIZE (1024*1024*1024) |
19 | #define LOLA_BDL_ENTRY_SIZE (16 * 16) |
20 | |
21 | static struct lola_pcm *lola_get_pcm(struct snd_pcm_substream *substream) |
22 | { |
23 | struct lola *chip = snd_pcm_substream_chip(substream); |
24 | return &chip->pcm[substream->stream]; |
25 | } |
26 | |
27 | static struct lola_stream *lola_get_stream(struct snd_pcm_substream *substream) |
28 | { |
29 | struct lola_pcm *pcm = lola_get_pcm(substream); |
30 | unsigned int idx = substream->number; |
31 | return &pcm->streams[idx]; |
32 | } |
33 | |
34 | static unsigned int lola_get_lrc(struct lola *chip) |
35 | { |
36 | return lola_readl(chip, BAR1, LRC); |
37 | } |
38 | |
39 | static unsigned int lola_get_tstamp(struct lola *chip, bool quick_no_sync) |
40 | { |
41 | unsigned int tstamp = lola_get_lrc(chip) >> 8; |
42 | if (chip->granularity) { |
43 | unsigned int wait_banks = quick_no_sync ? 0 : 8; |
44 | tstamp += (wait_banks + 1) * chip->granularity - 1; |
45 | tstamp -= tstamp % chip->granularity; |
46 | } |
47 | return tstamp << 8; |
48 | } |
49 | |
50 | /* clear any pending interrupt status */ |
51 | static void lola_stream_clear_pending_irq(struct lola *chip, |
52 | struct lola_stream *str) |
53 | { |
54 | unsigned int val = lola_dsd_read(chip, str->dsd, STS); |
55 | val &= LOLA_DSD_STS_DESE | LOLA_DSD_STS_BCIS; |
56 | if (val) |
57 | lola_dsd_write(chip, str->dsd, STS, val); |
58 | } |
59 | |
60 | static void lola_stream_start(struct lola *chip, struct lola_stream *str, |
61 | unsigned int tstamp) |
62 | { |
63 | lola_stream_clear_pending_irq(chip, str); |
64 | lola_dsd_write(chip, str->dsd, CTL, |
65 | LOLA_DSD_CTL_SRUN | |
66 | LOLA_DSD_CTL_IOCE | |
67 | LOLA_DSD_CTL_DEIE | |
68 | LOLA_DSD_CTL_VLRCV | |
69 | tstamp); |
70 | } |
71 | |
72 | static void lola_stream_stop(struct lola *chip, struct lola_stream *str, |
73 | unsigned int tstamp) |
74 | { |
75 | lola_dsd_write(chip, str->dsd, CTL, |
76 | LOLA_DSD_CTL_IOCE | |
77 | LOLA_DSD_CTL_DEIE | |
78 | LOLA_DSD_CTL_VLRCV | |
79 | tstamp); |
80 | lola_stream_clear_pending_irq(chip, str); |
81 | } |
82 | |
83 | static void wait_for_srst_clear(struct lola *chip, struct lola_stream *str) |
84 | { |
85 | unsigned long end_time = jiffies + msecs_to_jiffies(m: 200); |
86 | while (time_before(jiffies, end_time)) { |
87 | unsigned int val; |
88 | val = lola_dsd_read(chip, str->dsd, CTL); |
89 | if (!(val & LOLA_DSD_CTL_SRST)) |
90 | return; |
91 | msleep(msecs: 1); |
92 | } |
93 | dev_warn(chip->card->dev, "SRST not clear (stream %d)\n" , str->dsd); |
94 | } |
95 | |
96 | static int lola_stream_wait_for_fifo(struct lola *chip, |
97 | struct lola_stream *str, |
98 | bool ready) |
99 | { |
100 | unsigned int val = ready ? LOLA_DSD_STS_FIFORDY : 0; |
101 | unsigned long end_time = jiffies + msecs_to_jiffies(m: 200); |
102 | while (time_before(jiffies, end_time)) { |
103 | unsigned int reg = lola_dsd_read(chip, str->dsd, STS); |
104 | if ((reg & LOLA_DSD_STS_FIFORDY) == val) |
105 | return 0; |
106 | msleep(msecs: 1); |
107 | } |
108 | dev_warn(chip->card->dev, "FIFO not ready (stream %d)\n" , str->dsd); |
109 | return -EIO; |
110 | } |
111 | |
112 | /* sync for FIFO ready/empty for all linked streams; |
113 | * clear paused flag when FIFO gets ready again |
114 | */ |
115 | static int lola_sync_wait_for_fifo(struct lola *chip, |
116 | struct snd_pcm_substream *substream, |
117 | bool ready) |
118 | { |
119 | unsigned int val = ready ? LOLA_DSD_STS_FIFORDY : 0; |
120 | unsigned long end_time = jiffies + msecs_to_jiffies(m: 200); |
121 | struct snd_pcm_substream *s; |
122 | int pending = 0; |
123 | |
124 | while (time_before(jiffies, end_time)) { |
125 | pending = 0; |
126 | snd_pcm_group_for_each_entry(s, substream) { |
127 | struct lola_stream *str; |
128 | if (s->pcm->card != substream->pcm->card) |
129 | continue; |
130 | str = lola_get_stream(substream: s); |
131 | if (str->prepared && str->paused) { |
132 | unsigned int reg; |
133 | reg = lola_dsd_read(chip, str->dsd, STS); |
134 | if ((reg & LOLA_DSD_STS_FIFORDY) != val) { |
135 | pending = str->dsd + 1; |
136 | break; |
137 | } |
138 | if (ready) |
139 | str->paused = 0; |
140 | } |
141 | } |
142 | if (!pending) |
143 | return 0; |
144 | msleep(msecs: 1); |
145 | } |
146 | dev_warn(chip->card->dev, "FIFO not ready (pending %d)\n" , pending - 1); |
147 | return -EIO; |
148 | } |
149 | |
150 | /* finish pause - prepare for a new resume */ |
151 | static void lola_sync_pause(struct lola *chip, |
152 | struct snd_pcm_substream *substream) |
153 | { |
154 | struct snd_pcm_substream *s; |
155 | |
156 | lola_sync_wait_for_fifo(chip, substream, ready: false); |
157 | snd_pcm_group_for_each_entry(s, substream) { |
158 | struct lola_stream *str; |
159 | if (s->pcm->card != substream->pcm->card) |
160 | continue; |
161 | str = lola_get_stream(substream: s); |
162 | if (str->paused && str->prepared) |
163 | lola_dsd_write(chip, str->dsd, CTL, LOLA_DSD_CTL_SRUN | |
164 | LOLA_DSD_CTL_IOCE | LOLA_DSD_CTL_DEIE); |
165 | } |
166 | lola_sync_wait_for_fifo(chip, substream, ready: true); |
167 | } |
168 | |
169 | static void lola_stream_reset(struct lola *chip, struct lola_stream *str) |
170 | { |
171 | if (str->prepared) { |
172 | if (str->paused) |
173 | lola_sync_pause(chip, substream: str->substream); |
174 | str->prepared = 0; |
175 | lola_dsd_write(chip, str->dsd, CTL, |
176 | LOLA_DSD_CTL_IOCE | LOLA_DSD_CTL_DEIE); |
177 | lola_stream_wait_for_fifo(chip, str, ready: false); |
178 | lola_stream_clear_pending_irq(chip, str); |
179 | lola_dsd_write(chip, str->dsd, CTL, LOLA_DSD_CTL_SRST); |
180 | lola_dsd_write(chip, str->dsd, LVI, 0); |
181 | lola_dsd_write(chip, str->dsd, BDPU, 0); |
182 | lola_dsd_write(chip, str->dsd, BDPL, 0); |
183 | wait_for_srst_clear(chip, str); |
184 | } |
185 | } |
186 | |
187 | static const struct snd_pcm_hardware lola_pcm_hw = { |
188 | .info = (SNDRV_PCM_INFO_MMAP | |
189 | SNDRV_PCM_INFO_INTERLEAVED | |
190 | SNDRV_PCM_INFO_BLOCK_TRANSFER | |
191 | SNDRV_PCM_INFO_MMAP_VALID | |
192 | SNDRV_PCM_INFO_PAUSE), |
193 | .formats = (SNDRV_PCM_FMTBIT_S16_LE | |
194 | SNDRV_PCM_FMTBIT_S24_LE | |
195 | SNDRV_PCM_FMTBIT_S32_LE | |
196 | SNDRV_PCM_FMTBIT_FLOAT_LE), |
197 | .rates = SNDRV_PCM_RATE_8000_192000, |
198 | .rate_min = 8000, |
199 | .rate_max = 192000, |
200 | .channels_min = 1, |
201 | .channels_max = 2, |
202 | .buffer_bytes_max = LOLA_MAX_BUF_SIZE, |
203 | .period_bytes_min = 128, |
204 | .period_bytes_max = LOLA_MAX_BUF_SIZE / 2, |
205 | .periods_min = 2, |
206 | .periods_max = LOLA_MAX_BDL_ENTRIES, |
207 | .fifo_size = 0, |
208 | }; |
209 | |
210 | static int lola_pcm_open(struct snd_pcm_substream *substream) |
211 | { |
212 | struct lola *chip = snd_pcm_substream_chip(substream); |
213 | struct lola_pcm *pcm = lola_get_pcm(substream); |
214 | struct lola_stream *str = lola_get_stream(substream); |
215 | struct snd_pcm_runtime *runtime = substream->runtime; |
216 | |
217 | mutex_lock(&chip->open_mutex); |
218 | if (str->opened) { |
219 | mutex_unlock(lock: &chip->open_mutex); |
220 | return -EBUSY; |
221 | } |
222 | str->substream = substream; |
223 | str->master = NULL; |
224 | str->opened = 1; |
225 | runtime->hw = lola_pcm_hw; |
226 | runtime->hw.channels_max = pcm->num_streams - str->index; |
227 | if (chip->sample_rate) { |
228 | /* sample rate is locked */ |
229 | runtime->hw.rate_min = chip->sample_rate; |
230 | runtime->hw.rate_max = chip->sample_rate; |
231 | } else { |
232 | runtime->hw.rate_min = chip->sample_rate_min; |
233 | runtime->hw.rate_max = chip->sample_rate_max; |
234 | } |
235 | chip->ref_count_rate++; |
236 | snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); |
237 | /* period size = multiple of chip->granularity (8, 16 or 32 frames)*/ |
238 | snd_pcm_hw_constraint_step(runtime, cond: 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, |
239 | step: chip->granularity); |
240 | snd_pcm_hw_constraint_step(runtime, cond: 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, |
241 | step: chip->granularity); |
242 | mutex_unlock(lock: &chip->open_mutex); |
243 | return 0; |
244 | } |
245 | |
246 | static void lola_cleanup_slave_streams(struct lola_pcm *pcm, |
247 | struct lola_stream *str) |
248 | { |
249 | int i; |
250 | for (i = str->index + 1; i < pcm->num_streams; i++) { |
251 | struct lola_stream *s = &pcm->streams[i]; |
252 | if (s->master != str) |
253 | break; |
254 | s->master = NULL; |
255 | s->opened = 0; |
256 | } |
257 | } |
258 | |
259 | static int lola_pcm_close(struct snd_pcm_substream *substream) |
260 | { |
261 | struct lola *chip = snd_pcm_substream_chip(substream); |
262 | struct lola_stream *str = lola_get_stream(substream); |
263 | |
264 | mutex_lock(&chip->open_mutex); |
265 | if (str->substream == substream) { |
266 | str->substream = NULL; |
267 | str->opened = 0; |
268 | } |
269 | if (--chip->ref_count_rate == 0) { |
270 | /* release sample rate */ |
271 | chip->sample_rate = 0; |
272 | } |
273 | mutex_unlock(lock: &chip->open_mutex); |
274 | return 0; |
275 | } |
276 | |
277 | static int lola_pcm_hw_params(struct snd_pcm_substream *substream, |
278 | struct snd_pcm_hw_params *hw_params) |
279 | { |
280 | struct lola_stream *str = lola_get_stream(substream); |
281 | |
282 | str->bufsize = 0; |
283 | str->period_bytes = 0; |
284 | str->format_verb = 0; |
285 | return 0; |
286 | } |
287 | |
288 | static int lola_pcm_hw_free(struct snd_pcm_substream *substream) |
289 | { |
290 | struct lola *chip = snd_pcm_substream_chip(substream); |
291 | struct lola_pcm *pcm = lola_get_pcm(substream); |
292 | struct lola_stream *str = lola_get_stream(substream); |
293 | |
294 | mutex_lock(&chip->open_mutex); |
295 | lola_stream_reset(chip, str); |
296 | lola_cleanup_slave_streams(pcm, str); |
297 | mutex_unlock(lock: &chip->open_mutex); |
298 | return 0; |
299 | } |
300 | |
301 | /* |
302 | * set up a BDL entry |
303 | */ |
304 | static int setup_bdle(struct snd_pcm_substream *substream, |
305 | struct lola_stream *str, __le32 **bdlp, |
306 | int ofs, int size) |
307 | { |
308 | __le32 *bdl = *bdlp; |
309 | |
310 | while (size > 0) { |
311 | dma_addr_t addr; |
312 | int chunk; |
313 | |
314 | if (str->frags >= LOLA_MAX_BDL_ENTRIES) |
315 | return -EINVAL; |
316 | |
317 | addr = snd_pcm_sgbuf_get_addr(substream, ofs); |
318 | /* program the address field of the BDL entry */ |
319 | bdl[0] = cpu_to_le32((u32)addr); |
320 | bdl[1] = cpu_to_le32(upper_32_bits(addr)); |
321 | /* program the size field of the BDL entry */ |
322 | chunk = snd_pcm_sgbuf_get_chunk_size(substream, ofs, size); |
323 | bdl[2] = cpu_to_le32(chunk); |
324 | /* program the IOC to enable interrupt |
325 | * only when the whole fragment is processed |
326 | */ |
327 | size -= chunk; |
328 | bdl[3] = size ? 0 : cpu_to_le32(0x01); |
329 | bdl += 4; |
330 | str->frags++; |
331 | ofs += chunk; |
332 | } |
333 | *bdlp = bdl; |
334 | return ofs; |
335 | } |
336 | |
337 | /* |
338 | * set up BDL entries |
339 | */ |
340 | static int lola_setup_periods(struct lola *chip, struct lola_pcm *pcm, |
341 | struct snd_pcm_substream *substream, |
342 | struct lola_stream *str) |
343 | { |
344 | __le32 *bdl; |
345 | int i, ofs, periods, period_bytes; |
346 | |
347 | period_bytes = str->period_bytes; |
348 | periods = str->bufsize / period_bytes; |
349 | |
350 | /* program the initial BDL entries */ |
351 | bdl = (__le32 *)(pcm->bdl->area + LOLA_BDL_ENTRY_SIZE * str->index); |
352 | ofs = 0; |
353 | str->frags = 0; |
354 | for (i = 0; i < periods; i++) { |
355 | ofs = setup_bdle(substream, str, bdlp: &bdl, ofs, size: period_bytes); |
356 | if (ofs < 0) |
357 | goto error; |
358 | } |
359 | return 0; |
360 | |
361 | error: |
362 | dev_err(chip->card->dev, "Too many BDL entries: buffer=%d, period=%d\n" , |
363 | str->bufsize, period_bytes); |
364 | return -EINVAL; |
365 | } |
366 | |
367 | static unsigned int lola_get_format_verb(struct snd_pcm_substream *substream) |
368 | { |
369 | unsigned int verb; |
370 | |
371 | switch (substream->runtime->format) { |
372 | case SNDRV_PCM_FORMAT_S16_LE: |
373 | verb = 0x00000000; |
374 | break; |
375 | case SNDRV_PCM_FORMAT_S24_LE: |
376 | verb = 0x00000200; |
377 | break; |
378 | case SNDRV_PCM_FORMAT_S32_LE: |
379 | verb = 0x00000300; |
380 | break; |
381 | case SNDRV_PCM_FORMAT_FLOAT_LE: |
382 | verb = 0x00001300; |
383 | break; |
384 | default: |
385 | return 0; |
386 | } |
387 | verb |= substream->runtime->channels; |
388 | return verb; |
389 | } |
390 | |
391 | static int lola_set_stream_config(struct lola *chip, |
392 | struct lola_stream *str, |
393 | int channels) |
394 | { |
395 | int i, err; |
396 | unsigned int verb, val; |
397 | |
398 | /* set format info for all channels |
399 | * (with only one command for the first channel) |
400 | */ |
401 | err = lola_codec_read(chip, nid: str->nid, LOLA_VERB_SET_STREAM_FORMAT, |
402 | data: str->format_verb, extdata: 0, val: &val, NULL); |
403 | if (err < 0) { |
404 | dev_err(chip->card->dev, "Cannot set stream format 0x%x\n" , |
405 | str->format_verb); |
406 | return err; |
407 | } |
408 | |
409 | /* update stream - channel config */ |
410 | for (i = 0; i < channels; i++) { |
411 | verb = (str->index << 6) | i; |
412 | err = lola_codec_read(chip, nid: str[i].nid, |
413 | LOLA_VERB_SET_CHANNEL_STREAMID, data: 0, extdata: verb, |
414 | val: &val, NULL); |
415 | if (err < 0) { |
416 | dev_err(chip->card->dev, |
417 | "Cannot set stream channel %d\n" , i); |
418 | return err; |
419 | } |
420 | } |
421 | return 0; |
422 | } |
423 | |
424 | /* |
425 | * set up the SD for streaming |
426 | */ |
427 | static int lola_setup_controller(struct lola *chip, struct lola_pcm *pcm, |
428 | struct lola_stream *str) |
429 | { |
430 | dma_addr_t bdl; |
431 | |
432 | if (str->prepared) |
433 | return -EINVAL; |
434 | |
435 | /* set up BDL */ |
436 | bdl = pcm->bdl->addr + LOLA_BDL_ENTRY_SIZE * str->index; |
437 | lola_dsd_write(chip, str->dsd, BDPL, (u32)bdl); |
438 | lola_dsd_write(chip, str->dsd, BDPU, upper_32_bits(bdl)); |
439 | /* program the stream LVI (last valid index) of the BDL */ |
440 | lola_dsd_write(chip, str->dsd, LVI, str->frags - 1); |
441 | lola_stream_clear_pending_irq(chip, str); |
442 | |
443 | lola_dsd_write(chip, str->dsd, CTL, |
444 | LOLA_DSD_CTL_IOCE | LOLA_DSD_CTL_DEIE | LOLA_DSD_CTL_SRUN); |
445 | |
446 | str->prepared = 1; |
447 | |
448 | return lola_stream_wait_for_fifo(chip, str, ready: true); |
449 | } |
450 | |
451 | static int lola_pcm_prepare(struct snd_pcm_substream *substream) |
452 | { |
453 | struct lola *chip = snd_pcm_substream_chip(substream); |
454 | struct lola_pcm *pcm = lola_get_pcm(substream); |
455 | struct lola_stream *str = lola_get_stream(substream); |
456 | struct snd_pcm_runtime *runtime = substream->runtime; |
457 | unsigned int bufsize, period_bytes, format_verb; |
458 | int i, err; |
459 | |
460 | mutex_lock(&chip->open_mutex); |
461 | lola_stream_reset(chip, str); |
462 | lola_cleanup_slave_streams(pcm, str); |
463 | if (str->index + runtime->channels > pcm->num_streams) { |
464 | mutex_unlock(lock: &chip->open_mutex); |
465 | return -EINVAL; |
466 | } |
467 | for (i = 1; i < runtime->channels; i++) { |
468 | str[i].master = str; |
469 | str[i].opened = 1; |
470 | } |
471 | mutex_unlock(lock: &chip->open_mutex); |
472 | |
473 | bufsize = snd_pcm_lib_buffer_bytes(substream); |
474 | period_bytes = snd_pcm_lib_period_bytes(substream); |
475 | format_verb = lola_get_format_verb(substream); |
476 | |
477 | str->bufsize = bufsize; |
478 | str->period_bytes = period_bytes; |
479 | str->format_verb = format_verb; |
480 | |
481 | err = lola_setup_periods(chip, pcm, substream, str); |
482 | if (err < 0) |
483 | return err; |
484 | |
485 | err = lola_set_sample_rate(chip, rate: runtime->rate); |
486 | if (err < 0) |
487 | return err; |
488 | chip->sample_rate = runtime->rate; /* sample rate gets locked */ |
489 | |
490 | err = lola_set_stream_config(chip, str, channels: runtime->channels); |
491 | if (err < 0) |
492 | return err; |
493 | |
494 | err = lola_setup_controller(chip, pcm, str); |
495 | if (err < 0) { |
496 | lola_stream_reset(chip, str); |
497 | return err; |
498 | } |
499 | |
500 | return 0; |
501 | } |
502 | |
503 | static int lola_pcm_trigger(struct snd_pcm_substream *substream, int cmd) |
504 | { |
505 | struct lola *chip = snd_pcm_substream_chip(substream); |
506 | struct lola_stream *str; |
507 | struct snd_pcm_substream *s; |
508 | unsigned int start; |
509 | unsigned int tstamp; |
510 | bool sync_streams; |
511 | |
512 | switch (cmd) { |
513 | case SNDRV_PCM_TRIGGER_START: |
514 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
515 | case SNDRV_PCM_TRIGGER_RESUME: |
516 | start = 1; |
517 | break; |
518 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
519 | case SNDRV_PCM_TRIGGER_SUSPEND: |
520 | case SNDRV_PCM_TRIGGER_STOP: |
521 | start = 0; |
522 | break; |
523 | default: |
524 | return -EINVAL; |
525 | } |
526 | |
527 | /* |
528 | * sample correct synchronization is only needed starting several |
529 | * streams. On stop or if only one stream do as quick as possible |
530 | */ |
531 | sync_streams = (start && snd_pcm_stream_linked(substream)); |
532 | tstamp = lola_get_tstamp(chip, quick_no_sync: !sync_streams); |
533 | spin_lock(lock: &chip->reg_lock); |
534 | snd_pcm_group_for_each_entry(s, substream) { |
535 | if (s->pcm->card != substream->pcm->card) |
536 | continue; |
537 | str = lola_get_stream(substream: s); |
538 | if (start) |
539 | lola_stream_start(chip, str, tstamp); |
540 | else |
541 | lola_stream_stop(chip, str, tstamp); |
542 | str->running = start; |
543 | str->paused = !start; |
544 | snd_pcm_trigger_done(substream: s, master: substream); |
545 | } |
546 | spin_unlock(lock: &chip->reg_lock); |
547 | return 0; |
548 | } |
549 | |
550 | static snd_pcm_uframes_t lola_pcm_pointer(struct snd_pcm_substream *substream) |
551 | { |
552 | struct lola *chip = snd_pcm_substream_chip(substream); |
553 | struct lola_stream *str = lola_get_stream(substream); |
554 | unsigned int pos = lola_dsd_read(chip, str->dsd, LPIB); |
555 | |
556 | if (pos >= str->bufsize) |
557 | pos = 0; |
558 | return bytes_to_frames(runtime: substream->runtime, size: pos); |
559 | } |
560 | |
561 | void lola_pcm_update(struct lola *chip, struct lola_pcm *pcm, unsigned int bits) |
562 | { |
563 | int i; |
564 | u8 num_streams = min_t(u8, pcm->num_streams, ARRAY_SIZE(pcm->streams)); |
565 | |
566 | for (i = 0; bits && i < num_streams; i++) { |
567 | if (bits & (1 << i)) { |
568 | struct lola_stream *str = &pcm->streams[i]; |
569 | if (str->substream && str->running) |
570 | snd_pcm_period_elapsed(substream: str->substream); |
571 | bits &= ~(1 << i); |
572 | } |
573 | } |
574 | } |
575 | |
576 | static const struct snd_pcm_ops lola_pcm_ops = { |
577 | .open = lola_pcm_open, |
578 | .close = lola_pcm_close, |
579 | .hw_params = lola_pcm_hw_params, |
580 | .hw_free = lola_pcm_hw_free, |
581 | .prepare = lola_pcm_prepare, |
582 | .trigger = lola_pcm_trigger, |
583 | .pointer = lola_pcm_pointer, |
584 | }; |
585 | |
586 | int lola_create_pcm(struct lola *chip) |
587 | { |
588 | struct snd_pcm *pcm; |
589 | int i, err; |
590 | |
591 | for (i = 0; i < 2; i++) { |
592 | chip->pcm[i].bdl = |
593 | snd_devm_alloc_pages(dev: &chip->pci->dev, SNDRV_DMA_TYPE_DEV, |
594 | PAGE_SIZE); |
595 | if (!chip->pcm[i].bdl) |
596 | return -ENOMEM; |
597 | } |
598 | |
599 | err = snd_pcm_new(card: chip->card, id: "Digigram Lola" , device: 0, |
600 | playback_count: chip->pcm[SNDRV_PCM_STREAM_PLAYBACK].num_streams, |
601 | capture_count: chip->pcm[SNDRV_PCM_STREAM_CAPTURE].num_streams, |
602 | rpcm: &pcm); |
603 | if (err < 0) |
604 | return err; |
605 | strscpy(pcm->name, "Digigram Lola" , sizeof(pcm->name)); |
606 | pcm->private_data = chip; |
607 | for (i = 0; i < 2; i++) { |
608 | if (chip->pcm[i].num_streams) |
609 | snd_pcm_set_ops(pcm, direction: i, ops: &lola_pcm_ops); |
610 | } |
611 | /* buffer pre-allocation */ |
612 | snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG, |
613 | data: &chip->pci->dev, |
614 | size: 1024 * 64, max: 32 * 1024 * 1024); |
615 | return 0; |
616 | } |
617 | |
618 | /* |
619 | */ |
620 | |
621 | static int lola_init_stream(struct lola *chip, struct lola_stream *str, |
622 | int idx, int nid, int dir) |
623 | { |
624 | unsigned int val; |
625 | int err; |
626 | |
627 | str->nid = nid; |
628 | str->index = idx; |
629 | str->dsd = idx; |
630 | if (dir == PLAY) |
631 | str->dsd += MAX_STREAM_IN_COUNT; |
632 | err = lola_read_param(chip, nid, LOLA_PAR_AUDIO_WIDGET_CAP, &val); |
633 | if (err < 0) { |
634 | dev_err(chip->card->dev, "Can't read wcaps for 0x%x\n" , nid); |
635 | return err; |
636 | } |
637 | if (dir == PLAY) { |
638 | /* test TYPE and bits 0..11 (no test bit9 : Digital = 0/1) */ |
639 | if ((val & 0x00f00dff) != 0x00000010) { |
640 | dev_err(chip->card->dev, |
641 | "Invalid wcaps 0x%x for 0x%x\n" , |
642 | val, nid); |
643 | return -EINVAL; |
644 | } |
645 | } else { |
646 | /* test TYPE and bits 0..11 (no test bit9 : Digital = 0/1) |
647 | * (bug : ignore bit8: Conn list = 0/1) |
648 | */ |
649 | if ((val & 0x00f00cff) != 0x00100010) { |
650 | dev_err(chip->card->dev, |
651 | "Invalid wcaps 0x%x for 0x%x\n" , |
652 | val, nid); |
653 | return -EINVAL; |
654 | } |
655 | /* test bit9:DIGITAL and bit12:SRC_PRESENT*/ |
656 | if ((val & 0x00001200) == 0x00001200) |
657 | chip->input_src_caps_mask |= (1 << idx); |
658 | } |
659 | |
660 | err = lola_read_param(chip, nid, LOLA_PAR_STREAM_FORMATS, &val); |
661 | if (err < 0) { |
662 | dev_err(chip->card->dev, "Can't read FORMATS 0x%x\n" , nid); |
663 | return err; |
664 | } |
665 | val &= 3; |
666 | if (val == 3) |
667 | str->can_float = true; |
668 | if (!(val & 1)) { |
669 | dev_err(chip->card->dev, |
670 | "Invalid formats 0x%x for 0x%x" , val, nid); |
671 | return -EINVAL; |
672 | } |
673 | return 0; |
674 | } |
675 | |
676 | int lola_init_pcm(struct lola *chip, int dir, int *nidp) |
677 | { |
678 | struct lola_pcm *pcm = &chip->pcm[dir]; |
679 | int i, nid, err; |
680 | |
681 | nid = *nidp; |
682 | for (i = 0; i < pcm->num_streams; i++, nid++) { |
683 | err = lola_init_stream(chip, str: &pcm->streams[i], idx: i, nid, dir); |
684 | if (err < 0) |
685 | return err; |
686 | } |
687 | *nidp = nid; |
688 | return 0; |
689 | } |
690 | |