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d43f3010 TI |
1 | /* |
2 | * Support for Digigram Lola PCI-e boards | |
3 | * | |
4 | * Copyright (c) 2011 Takashi Iwai <tiwai@suse.de> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the Free | |
8 | * Software Foundation; either version 2 of the License, or (at your option) | |
9 | * any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
14 | * more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License along with | |
17 | * this program; if not, write to the Free Software Foundation, Inc., 59 | |
18 | * Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
19 | */ | |
20 | ||
21 | #include <linux/kernel.h> | |
22 | #include <linux/init.h> | |
23 | #include <linux/dma-mapping.h> | |
24 | #include <linux/pci.h> | |
f044785d | 25 | #include <linux/delay.h> |
d43f3010 TI |
26 | #include <sound/core.h> |
27 | #include <sound/pcm.h> | |
28 | #include "lola.h" | |
29 | ||
333ff397 | 30 | #define LOLA_MAX_BDL_ENTRIES 8 |
d43f3010 | 31 | #define LOLA_MAX_BUF_SIZE (1024*1024*1024) |
333ff397 TI |
32 | #define LOLA_BDL_ENTRY_SIZE (16 * 16) |
33 | ||
d43f3010 TI |
34 | static struct lola_pcm *lola_get_pcm(struct snd_pcm_substream *substream) |
35 | { | |
36 | struct lola *chip = snd_pcm_substream_chip(substream); | |
37 | return &chip->pcm[substream->stream]; | |
38 | } | |
39 | ||
40 | static struct lola_stream *lola_get_stream(struct snd_pcm_substream *substream) | |
41 | { | |
42 | struct lola_pcm *pcm = lola_get_pcm(substream); | |
43 | unsigned int idx = substream->number; | |
44 | return &pcm->streams[idx]; | |
45 | } | |
46 | ||
47 | static unsigned int lola_get_lrc(struct lola *chip) | |
48 | { | |
49 | return lola_readl(chip, BAR1, LRC); | |
50 | } | |
51 | ||
52 | static unsigned int lola_get_tstamp(struct lola *chip, bool quick_no_sync) | |
53 | { | |
54 | unsigned int tstamp = lola_get_lrc(chip) >> 8; | |
55 | if (chip->granularity) { | |
56 | unsigned int wait_banks = quick_no_sync ? 0 : 8; | |
57 | tstamp += (wait_banks + 1) * chip->granularity - 1; | |
58 | tstamp -= tstamp % chip->granularity; | |
59 | } | |
60 | return tstamp << 8; | |
61 | } | |
62 | ||
63 | /* clear any pending interrupt status */ | |
64 | static void lola_stream_clear_pending_irq(struct lola *chip, | |
65 | struct lola_stream *str) | |
66 | { | |
67 | unsigned int val = lola_dsd_read(chip, str->dsd, STS); | |
68 | val &= LOLA_DSD_STS_DESE | LOLA_DSD_STS_BCIS; | |
69 | if (val) | |
70 | lola_dsd_write(chip, str->dsd, STS, val); | |
71 | } | |
72 | ||
73 | static void lola_stream_start(struct lola *chip, struct lola_stream *str, | |
74 | unsigned int tstamp) | |
75 | { | |
76 | lola_stream_clear_pending_irq(chip, str); | |
77 | lola_dsd_write(chip, str->dsd, CTL, | |
78 | LOLA_DSD_CTL_SRUN | | |
79 | LOLA_DSD_CTL_IOCE | | |
80 | LOLA_DSD_CTL_DEIE | | |
81 | LOLA_DSD_CTL_VLRCV | | |
82 | tstamp); | |
83 | } | |
84 | ||
85 | static void lola_stream_stop(struct lola *chip, struct lola_stream *str, | |
86 | unsigned int tstamp) | |
87 | { | |
88 | lola_dsd_write(chip, str->dsd, CTL, | |
89 | LOLA_DSD_CTL_IOCE | | |
90 | LOLA_DSD_CTL_DEIE | | |
91 | LOLA_DSD_CTL_VLRCV | | |
92 | tstamp); | |
93 | lola_stream_clear_pending_irq(chip, str); | |
94 | } | |
95 | ||
d43f3010 TI |
96 | static void wait_for_srst_clear(struct lola *chip, struct lola_stream *str) |
97 | { | |
333ff397 | 98 | unsigned long end_time = jiffies + msecs_to_jiffies(200); |
d43f3010 TI |
99 | while (time_before(jiffies, end_time)) { |
100 | unsigned int val; | |
101 | val = lola_dsd_read(chip, str->dsd, CTL); | |
102 | if (!(val & LOLA_DSD_CTL_SRST)) | |
103 | return; | |
104 | msleep(1); | |
105 | } | |
106 | printk(KERN_WARNING SFX "SRST not clear (stream %d)\n", str->dsd); | |
107 | } | |
108 | ||
0f8f56c9 TI |
109 | static int lola_stream_wait_for_fifo(struct lola *chip, |
110 | struct lola_stream *str, | |
111 | bool ready) | |
d43f3010 | 112 | { |
0f8f56c9 TI |
113 | unsigned int val = ready ? LOLA_DSD_STS_FIFORDY : 0; |
114 | unsigned long end_time = jiffies + msecs_to_jiffies(200); | |
d43f3010 | 115 | while (time_before(jiffies, end_time)) { |
0f8f56c9 TI |
116 | unsigned int reg = lola_dsd_read(chip, str->dsd, STS); |
117 | if ((reg & LOLA_DSD_STS_FIFORDY) == val) | |
d43f3010 TI |
118 | return 0; |
119 | msleep(1); | |
120 | } | |
121 | printk(KERN_WARNING SFX "FIFO not ready (stream %d)\n", str->dsd); | |
122 | return -EIO; | |
123 | } | |
124 | ||
c7aad3c3 TI |
125 | /* sync for FIFO ready/empty for all linked streams; |
126 | * clear paused flag when FIFO gets ready again | |
127 | */ | |
128 | static int lola_sync_wait_for_fifo(struct lola *chip, | |
129 | struct snd_pcm_substream *substream, | |
130 | bool ready) | |
0f8f56c9 | 131 | { |
c7aad3c3 TI |
132 | unsigned int val = ready ? LOLA_DSD_STS_FIFORDY : 0; |
133 | unsigned long end_time = jiffies + msecs_to_jiffies(200); | |
134 | struct snd_pcm_substream *s; | |
135 | int pending = 0; | |
136 | ||
137 | while (time_before(jiffies, end_time)) { | |
138 | pending = 0; | |
139 | snd_pcm_group_for_each_entry(s, substream) { | |
140 | struct lola_stream *str; | |
141 | if (s->pcm->card != substream->pcm->card) | |
142 | continue; | |
143 | str = lola_get_stream(s); | |
144 | if (str->prepared && str->paused) { | |
145 | unsigned int reg; | |
146 | reg = lola_dsd_read(chip, str->dsd, STS); | |
147 | if ((reg & LOLA_DSD_STS_FIFORDY) != val) { | |
148 | pending = str->dsd + 1; | |
149 | break; | |
150 | } | |
151 | if (ready) | |
152 | str->paused = 0; | |
153 | } | |
154 | } | |
155 | if (!pending) | |
156 | return 0; | |
157 | msleep(1); | |
158 | } | |
159 | printk(KERN_WARNING SFX "FIFO not ready (pending %d)\n", pending - 1); | |
160 | return -EIO; | |
161 | } | |
162 | ||
163 | /* finish pause - prepare for a new resume */ | |
164 | static void lola_sync_pause(struct lola *chip, | |
165 | struct snd_pcm_substream *substream) | |
166 | { | |
167 | struct snd_pcm_substream *s; | |
0f8f56c9 | 168 | |
c7aad3c3 TI |
169 | lola_sync_wait_for_fifo(chip, substream, false); |
170 | snd_pcm_group_for_each_entry(s, substream) { | |
171 | struct lola_stream *str; | |
172 | if (s->pcm->card != substream->pcm->card) | |
173 | continue; | |
174 | str = lola_get_stream(s); | |
175 | if (str->paused && str->prepared) | |
7e79f226 TI |
176 | lola_dsd_write(chip, str->dsd, CTL, LOLA_DSD_CTL_SRUN | |
177 | LOLA_DSD_CTL_IOCE | LOLA_DSD_CTL_DEIE); | |
c7aad3c3 TI |
178 | } |
179 | lola_sync_wait_for_fifo(chip, substream, true); | |
180 | } | |
181 | ||
182 | static void lola_stream_reset(struct lola *chip, struct lola_stream *str) | |
183 | { | |
184 | if (str->prepared) { | |
185 | if (str->paused) | |
186 | lola_sync_pause(chip, str->substream); | |
187 | str->prepared = 0; | |
0f8f56c9 TI |
188 | lola_dsd_write(chip, str->dsd, CTL, |
189 | LOLA_DSD_CTL_IOCE | LOLA_DSD_CTL_DEIE); | |
190 | lola_stream_wait_for_fifo(chip, str, false); | |
191 | lola_stream_clear_pending_irq(chip, str); | |
192 | lola_dsd_write(chip, str->dsd, CTL, LOLA_DSD_CTL_SRST); | |
193 | lola_dsd_write(chip, str->dsd, LVI, 0); | |
194 | lola_dsd_write(chip, str->dsd, BDPU, 0); | |
195 | lola_dsd_write(chip, str->dsd, BDPL, 0); | |
196 | wait_for_srst_clear(chip, str); | |
197 | } | |
198 | } | |
199 | ||
d43f3010 TI |
200 | static struct snd_pcm_hardware lola_pcm_hw = { |
201 | .info = (SNDRV_PCM_INFO_MMAP | | |
202 | SNDRV_PCM_INFO_INTERLEAVED | | |
203 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
204 | SNDRV_PCM_INFO_MMAP_VALID | | |
205 | SNDRV_PCM_INFO_PAUSE), | |
206 | .formats = (SNDRV_PCM_FMTBIT_S16_LE | | |
207 | SNDRV_PCM_FMTBIT_S24_LE | | |
208 | SNDRV_PCM_FMTBIT_S32_LE | | |
209 | SNDRV_PCM_FMTBIT_FLOAT_LE), | |
0f8f56c9 TI |
210 | .rates = SNDRV_PCM_RATE_8000_192000, |
211 | .rate_min = 8000, | |
212 | .rate_max = 192000, | |
d43f3010 TI |
213 | .channels_min = 1, |
214 | .channels_max = 2, | |
215 | .buffer_bytes_max = LOLA_MAX_BUF_SIZE, | |
216 | .period_bytes_min = 128, | |
217 | .period_bytes_max = LOLA_MAX_BUF_SIZE / 2, | |
218 | .periods_min = 2, | |
0f8f56c9 | 219 | .periods_max = LOLA_MAX_BDL_ENTRIES, |
d43f3010 TI |
220 | .fifo_size = 0, |
221 | }; | |
222 | ||
223 | static int lola_pcm_open(struct snd_pcm_substream *substream) | |
224 | { | |
225 | struct lola *chip = snd_pcm_substream_chip(substream); | |
226 | struct lola_pcm *pcm = lola_get_pcm(substream); | |
227 | struct lola_stream *str = lola_get_stream(substream); | |
228 | struct snd_pcm_runtime *runtime = substream->runtime; | |
d43f3010 TI |
229 | |
230 | mutex_lock(&chip->open_mutex); | |
231 | if (str->opened) { | |
232 | mutex_unlock(&chip->open_mutex); | |
233 | return -EBUSY; | |
234 | } | |
d43f3010 TI |
235 | str->substream = substream; |
236 | str->master = NULL; | |
237 | str->opened = 1; | |
238 | runtime->hw = lola_pcm_hw; | |
239 | runtime->hw.channels_max = pcm->num_streams - str->index; | |
7e79f226 TI |
240 | if (chip->sample_rate) { |
241 | /* sample rate is locked */ | |
242 | runtime->hw.rate_min = chip->sample_rate; | |
243 | runtime->hw.rate_max = chip->sample_rate; | |
244 | } else { | |
245 | runtime->hw.rate_min = chip->sample_rate_min; | |
246 | runtime->hw.rate_max = chip->sample_rate_max; | |
247 | } | |
248 | chip->ref_count_rate++; | |
d43f3010 | 249 | snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); |
7e79f226 | 250 | /* period size = multiple of chip->granularity (8, 16 or 32 frames)*/ |
0f8f56c9 | 251 | snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, |
8bd172dc | 252 | chip->granularity); |
0f8f56c9 | 253 | snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, |
8bd172dc | 254 | chip->granularity); |
d43f3010 TI |
255 | mutex_unlock(&chip->open_mutex); |
256 | return 0; | |
257 | } | |
258 | ||
259 | static void lola_cleanup_slave_streams(struct lola_pcm *pcm, | |
260 | struct lola_stream *str) | |
261 | { | |
262 | int i; | |
263 | for (i = str->index + 1; i < pcm->num_streams; i++) { | |
264 | struct lola_stream *s = &pcm->streams[i]; | |
265 | if (s->master != str) | |
266 | break; | |
267 | s->master = NULL; | |
268 | s->opened = 0; | |
269 | } | |
270 | } | |
271 | ||
272 | static int lola_pcm_close(struct snd_pcm_substream *substream) | |
273 | { | |
274 | struct lola *chip = snd_pcm_substream_chip(substream); | |
275 | struct lola_stream *str = lola_get_stream(substream); | |
276 | ||
277 | mutex_lock(&chip->open_mutex); | |
278 | if (str->substream == substream) { | |
279 | str->substream = NULL; | |
280 | str->opened = 0; | |
281 | } | |
7e79f226 TI |
282 | if (--chip->ref_count_rate == 0) { |
283 | /* release sample rate */ | |
284 | chip->sample_rate = 0; | |
285 | } | |
d43f3010 TI |
286 | mutex_unlock(&chip->open_mutex); |
287 | return 0; | |
288 | } | |
289 | ||
290 | static int lola_pcm_hw_params(struct snd_pcm_substream *substream, | |
291 | struct snd_pcm_hw_params *hw_params) | |
292 | { | |
293 | struct lola_stream *str = lola_get_stream(substream); | |
294 | ||
295 | str->bufsize = 0; | |
296 | str->period_bytes = 0; | |
297 | str->format_verb = 0; | |
298 | return snd_pcm_lib_malloc_pages(substream, | |
299 | params_buffer_bytes(hw_params)); | |
300 | } | |
301 | ||
302 | static int lola_pcm_hw_free(struct snd_pcm_substream *substream) | |
303 | { | |
304 | struct lola *chip = snd_pcm_substream_chip(substream); | |
305 | struct lola_pcm *pcm = lola_get_pcm(substream); | |
306 | struct lola_stream *str = lola_get_stream(substream); | |
307 | ||
308 | mutex_lock(&chip->open_mutex); | |
309 | lola_stream_reset(chip, str); | |
310 | lola_cleanup_slave_streams(pcm, str); | |
311 | mutex_unlock(&chip->open_mutex); | |
312 | return snd_pcm_lib_free_pages(substream); | |
313 | } | |
314 | ||
315 | /* | |
316 | * set up a BDL entry | |
317 | */ | |
318 | static int setup_bdle(struct snd_pcm_substream *substream, | |
319 | struct lola_stream *str, u32 **bdlp, | |
320 | int ofs, int size) | |
321 | { | |
322 | u32 *bdl = *bdlp; | |
323 | ||
324 | while (size > 0) { | |
325 | dma_addr_t addr; | |
326 | int chunk; | |
327 | ||
328 | if (str->frags >= LOLA_MAX_BDL_ENTRIES) | |
329 | return -EINVAL; | |
330 | ||
972505cc | 331 | addr = snd_pcm_sgbuf_get_addr(substream, ofs); |
d43f3010 TI |
332 | /* program the address field of the BDL entry */ |
333 | bdl[0] = cpu_to_le32((u32)addr); | |
334 | bdl[1] = cpu_to_le32(upper_32_bits(addr)); | |
335 | /* program the size field of the BDL entry */ | |
972505cc | 336 | chunk = snd_pcm_sgbuf_get_chunk_size(substream, ofs, size); |
d43f3010 TI |
337 | bdl[2] = cpu_to_le32(chunk); |
338 | /* program the IOC to enable interrupt | |
339 | * only when the whole fragment is processed | |
340 | */ | |
341 | size -= chunk; | |
342 | bdl[3] = size ? 0 : cpu_to_le32(0x01); | |
343 | bdl += 4; | |
344 | str->frags++; | |
345 | ofs += chunk; | |
346 | } | |
347 | *bdlp = bdl; | |
348 | return ofs; | |
349 | } | |
350 | ||
351 | /* | |
352 | * set up BDL entries | |
353 | */ | |
333ff397 | 354 | static int lola_setup_periods(struct lola *chip, struct lola_pcm *pcm, |
d43f3010 TI |
355 | struct snd_pcm_substream *substream, |
356 | struct lola_stream *str) | |
357 | { | |
358 | u32 *bdl; | |
359 | int i, ofs, periods, period_bytes; | |
360 | ||
361 | period_bytes = str->period_bytes; | |
362 | periods = str->bufsize / period_bytes; | |
363 | ||
364 | /* program the initial BDL entries */ | |
333ff397 | 365 | bdl = (u32 *)(pcm->bdl.area + LOLA_BDL_ENTRY_SIZE * str->index); |
d43f3010 TI |
366 | ofs = 0; |
367 | str->frags = 0; | |
368 | for (i = 0; i < periods; i++) { | |
369 | ofs = setup_bdle(substream, str, &bdl, ofs, period_bytes); | |
370 | if (ofs < 0) | |
371 | goto error; | |
372 | } | |
373 | return 0; | |
374 | ||
375 | error: | |
376 | snd_printk(KERN_ERR SFX "Too many BDL entries: buffer=%d, period=%d\n", | |
377 | str->bufsize, period_bytes); | |
378 | return -EINVAL; | |
379 | } | |
380 | ||
381 | static unsigned int lola_get_format_verb(struct snd_pcm_substream *substream) | |
382 | { | |
383 | unsigned int verb; | |
384 | ||
385 | switch (substream->runtime->format) { | |
386 | case SNDRV_PCM_FORMAT_S16_LE: | |
387 | verb = 0x00000000; | |
388 | break; | |
389 | case SNDRV_PCM_FORMAT_S24_LE: | |
390 | verb = 0x00000200; | |
391 | break; | |
392 | case SNDRV_PCM_FORMAT_S32_LE: | |
393 | verb = 0x00000300; | |
394 | break; | |
395 | case SNDRV_PCM_FORMAT_FLOAT_LE: | |
396 | verb = 0x00001300; | |
397 | break; | |
398 | default: | |
399 | return 0; | |
400 | } | |
401 | verb |= substream->runtime->channels; | |
402 | return verb; | |
403 | } | |
404 | ||
405 | static int lola_set_stream_config(struct lola *chip, | |
406 | struct lola_stream *str, | |
407 | int channels) | |
408 | { | |
409 | int i, err; | |
410 | unsigned int verb, val; | |
411 | ||
412 | /* set format info for all channels | |
413 | * (with only one command for the first channel) | |
414 | */ | |
415 | err = lola_codec_read(chip, str->nid, LOLA_VERB_SET_STREAM_FORMAT, | |
416 | str->format_verb, 0, &val, NULL); | |
417 | if (err < 0) { | |
418 | printk(KERN_ERR SFX "Cannot set stream format 0x%x\n", | |
419 | str->format_verb); | |
420 | return err; | |
421 | } | |
422 | ||
423 | /* update stream - channel config */ | |
424 | for (i = 0; i < channels; i++) { | |
425 | verb = (str->index << 6) | i; | |
426 | err = lola_codec_read(chip, str[i].nid, | |
427 | LOLA_VERB_SET_CHANNEL_STREAMID, 0, verb, | |
428 | &val, NULL); | |
429 | if (err < 0) { | |
430 | printk(KERN_ERR SFX "Cannot set stream channel %d\n", i); | |
431 | return err; | |
432 | } | |
433 | } | |
434 | return 0; | |
435 | } | |
436 | ||
437 | /* | |
438 | * set up the SD for streaming | |
439 | */ | |
333ff397 TI |
440 | static int lola_setup_controller(struct lola *chip, struct lola_pcm *pcm, |
441 | struct lola_stream *str) | |
d43f3010 | 442 | { |
333ff397 | 443 | dma_addr_t bdl; |
0f8f56c9 TI |
444 | |
445 | if (str->prepared) | |
446 | return -EINVAL; | |
447 | ||
d43f3010 | 448 | /* set up BDL */ |
333ff397 TI |
449 | bdl = pcm->bdl.addr + LOLA_BDL_ENTRY_SIZE * str->index; |
450 | lola_dsd_write(chip, str->dsd, BDPL, (u32)bdl); | |
451 | lola_dsd_write(chip, str->dsd, BDPU, upper_32_bits(bdl)); | |
d43f3010 TI |
452 | /* program the stream LVI (last valid index) of the BDL */ |
453 | lola_dsd_write(chip, str->dsd, LVI, str->frags - 1); | |
0f8f56c9 | 454 | lola_stream_clear_pending_irq(chip, str); |
d43f3010 | 455 | |
0f8f56c9 TI |
456 | lola_dsd_write(chip, str->dsd, CTL, |
457 | LOLA_DSD_CTL_IOCE | LOLA_DSD_CTL_DEIE | LOLA_DSD_CTL_SRUN); | |
458 | ||
459 | str->prepared = 1; | |
460 | ||
461 | return lola_stream_wait_for_fifo(chip, str, true); | |
d43f3010 TI |
462 | } |
463 | ||
464 | static int lola_pcm_prepare(struct snd_pcm_substream *substream) | |
465 | { | |
466 | struct lola *chip = snd_pcm_substream_chip(substream); | |
467 | struct lola_pcm *pcm = lola_get_pcm(substream); | |
468 | struct lola_stream *str = lola_get_stream(substream); | |
469 | struct snd_pcm_runtime *runtime = substream->runtime; | |
470 | unsigned int bufsize, period_bytes, format_verb; | |
471 | int i, err; | |
472 | ||
473 | mutex_lock(&chip->open_mutex); | |
474 | lola_stream_reset(chip, str); | |
475 | lola_cleanup_slave_streams(pcm, str); | |
2db30020 | 476 | if (str->index + runtime->channels > pcm->num_streams) { |
d43f3010 TI |
477 | mutex_unlock(&chip->open_mutex); |
478 | return -EINVAL; | |
479 | } | |
480 | for (i = 1; i < runtime->channels; i++) { | |
481 | str[i].master = str; | |
482 | str[i].opened = 1; | |
483 | } | |
484 | mutex_unlock(&chip->open_mutex); | |
485 | ||
486 | bufsize = snd_pcm_lib_buffer_bytes(substream); | |
487 | period_bytes = snd_pcm_lib_period_bytes(substream); | |
488 | format_verb = lola_get_format_verb(substream); | |
489 | ||
0f8f56c9 TI |
490 | str->bufsize = bufsize; |
491 | str->period_bytes = period_bytes; | |
492 | str->format_verb = format_verb; | |
493 | ||
494 | err = lola_setup_periods(chip, pcm, substream, str); | |
495 | if (err < 0) | |
496 | return err; | |
d43f3010 | 497 | |
7e79f226 TI |
498 | err = lola_set_sample_rate(chip, runtime->rate); |
499 | if (err < 0) | |
500 | return err; | |
501 | chip->sample_rate = runtime->rate; /* sample rate gets locked */ | |
502 | ||
d43f3010 TI |
503 | err = lola_set_stream_config(chip, str, runtime->channels); |
504 | if (err < 0) | |
505 | return err; | |
506 | ||
0f8f56c9 TI |
507 | err = lola_setup_controller(chip, pcm, str); |
508 | if (err < 0) { | |
509 | lola_stream_reset(chip, str); | |
510 | return err; | |
511 | } | |
512 | ||
513 | return 0; | |
d43f3010 TI |
514 | } |
515 | ||
516 | static int lola_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
517 | { | |
518 | struct lola *chip = snd_pcm_substream_chip(substream); | |
519 | struct lola_stream *str; | |
520 | struct snd_pcm_substream *s; | |
521 | unsigned int start; | |
522 | unsigned int tstamp; | |
7e79f226 | 523 | bool sync_streams; |
d43f3010 TI |
524 | |
525 | switch (cmd) { | |
526 | case SNDRV_PCM_TRIGGER_START: | |
527 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
528 | case SNDRV_PCM_TRIGGER_RESUME: | |
529 | start = 1; | |
530 | break; | |
531 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
532 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
533 | case SNDRV_PCM_TRIGGER_STOP: | |
534 | start = 0; | |
535 | break; | |
536 | default: | |
537 | return -EINVAL; | |
538 | } | |
539 | ||
7e79f226 TI |
540 | /* |
541 | * sample correct synchronization is only needed starting several | |
2db30020 | 542 | * streams. On stop or if only one stream do as quick as possible |
7e79f226 TI |
543 | */ |
544 | sync_streams = (start && snd_pcm_stream_linked(substream)); | |
545 | tstamp = lola_get_tstamp(chip, !sync_streams); | |
d43f3010 TI |
546 | spin_lock(&chip->reg_lock); |
547 | snd_pcm_group_for_each_entry(s, substream) { | |
548 | if (s->pcm->card != substream->pcm->card) | |
549 | continue; | |
550 | str = lola_get_stream(s); | |
551 | if (start) | |
552 | lola_stream_start(chip, str, tstamp); | |
553 | else | |
554 | lola_stream_stop(chip, str, tstamp); | |
555 | str->running = start; | |
7e79f226 | 556 | str->paused = !start; |
d43f3010 TI |
557 | snd_pcm_trigger_done(s, substream); |
558 | } | |
559 | spin_unlock(&chip->reg_lock); | |
560 | return 0; | |
561 | } | |
562 | ||
563 | static snd_pcm_uframes_t lola_pcm_pointer(struct snd_pcm_substream *substream) | |
564 | { | |
565 | struct lola *chip = snd_pcm_substream_chip(substream); | |
566 | struct lola_stream *str = lola_get_stream(substream); | |
567 | unsigned int pos = lola_dsd_read(chip, str->dsd, LPIB); | |
568 | ||
569 | if (pos >= str->bufsize) | |
570 | pos = 0; | |
571 | return bytes_to_frames(substream->runtime, pos); | |
572 | } | |
573 | ||
574 | void lola_pcm_update(struct lola *chip, struct lola_pcm *pcm, unsigned int bits) | |
575 | { | |
576 | int i; | |
577 | ||
578 | for (i = 0; bits && i < pcm->num_streams; i++) { | |
579 | if (bits & (1 << i)) { | |
580 | struct lola_stream *str = &pcm->streams[i]; | |
581 | if (str->substream && str->running) | |
582 | snd_pcm_period_elapsed(str->substream); | |
583 | bits &= ~(1 << i); | |
584 | } | |
585 | } | |
586 | } | |
587 | ||
588 | static struct snd_pcm_ops lola_pcm_ops = { | |
589 | .open = lola_pcm_open, | |
590 | .close = lola_pcm_close, | |
591 | .ioctl = snd_pcm_lib_ioctl, | |
592 | .hw_params = lola_pcm_hw_params, | |
593 | .hw_free = lola_pcm_hw_free, | |
594 | .prepare = lola_pcm_prepare, | |
595 | .trigger = lola_pcm_trigger, | |
596 | .pointer = lola_pcm_pointer, | |
972505cc | 597 | .page = snd_pcm_sgbuf_ops_page, |
d43f3010 TI |
598 | }; |
599 | ||
e23e7a14 | 600 | int lola_create_pcm(struct lola *chip) |
d43f3010 TI |
601 | { |
602 | struct snd_pcm *pcm; | |
603 | int i, err; | |
604 | ||
333ff397 TI |
605 | for (i = 0; i < 2; i++) { |
606 | err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, | |
607 | snd_dma_pci_data(chip->pci), | |
608 | PAGE_SIZE, &chip->pcm[i].bdl); | |
609 | if (err < 0) | |
610 | return err; | |
611 | } | |
612 | ||
d43f3010 TI |
613 | err = snd_pcm_new(chip->card, "Digigram Lola", 0, |
614 | chip->pcm[SNDRV_PCM_STREAM_PLAYBACK].num_streams, | |
615 | chip->pcm[SNDRV_PCM_STREAM_CAPTURE].num_streams, | |
616 | &pcm); | |
617 | if (err < 0) | |
618 | return err; | |
619 | strlcpy(pcm->name, "Digigram Lola", sizeof(pcm->name)); | |
620 | pcm->private_data = chip; | |
621 | for (i = 0; i < 2; i++) { | |
622 | if (chip->pcm[i].num_streams) | |
623 | snd_pcm_set_ops(pcm, i, &lola_pcm_ops); | |
624 | } | |
625 | /* buffer pre-allocation */ | |
972505cc | 626 | snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG, |
d43f3010 TI |
627 | snd_dma_pci_data(chip->pci), |
628 | 1024 * 64, 32 * 1024 * 1024); | |
629 | return 0; | |
630 | } | |
631 | ||
632 | void lola_free_pcm(struct lola *chip) | |
633 | { | |
333ff397 TI |
634 | snd_dma_free_pages(&chip->pcm[0].bdl); |
635 | snd_dma_free_pages(&chip->pcm[1].bdl); | |
d43f3010 TI |
636 | } |
637 | ||
638 | /* | |
639 | */ | |
640 | ||
641 | static int lola_init_stream(struct lola *chip, struct lola_stream *str, | |
642 | int idx, int nid, int dir) | |
643 | { | |
644 | unsigned int val; | |
645 | int err; | |
646 | ||
647 | str->nid = nid; | |
648 | str->index = idx; | |
649 | str->dsd = idx; | |
650 | if (dir == PLAY) | |
651 | str->dsd += MAX_STREAM_IN_COUNT; | |
652 | err = lola_read_param(chip, nid, LOLA_PAR_AUDIO_WIDGET_CAP, &val); | |
653 | if (err < 0) { | |
654 | printk(KERN_ERR SFX "Can't read wcaps for 0x%x\n", nid); | |
655 | return err; | |
656 | } | |
657 | if (dir == PLAY) { | |
658 | /* test TYPE and bits 0..11 (no test bit9 : Digital = 0/1) */ | |
659 | if ((val & 0x00f00dff) != 0x00000010) { | |
660 | printk(KERN_ERR SFX "Invalid wcaps 0x%x for 0x%x\n", | |
661 | val, nid); | |
662 | return -EINVAL; | |
663 | } | |
664 | } else { | |
665 | /* test TYPE and bits 0..11 (no test bit9 : Digital = 0/1) | |
666 | * (bug : ignore bit8: Conn list = 0/1) | |
667 | */ | |
668 | if ((val & 0x00f00cff) != 0x00100010) { | |
669 | printk(KERN_ERR SFX "Invalid wcaps 0x%x for 0x%x\n", | |
670 | val, nid); | |
671 | return -EINVAL; | |
672 | } | |
673 | /* test bit9:DIGITAL and bit12:SRC_PRESENT*/ | |
674 | if ((val & 0x00001200) == 0x00001200) | |
675 | chip->input_src_caps_mask |= (1 << idx); | |
676 | } | |
677 | ||
678 | err = lola_read_param(chip, nid, LOLA_PAR_STREAM_FORMATS, &val); | |
679 | if (err < 0) { | |
680 | printk(KERN_ERR SFX "Can't read FORMATS 0x%x\n", nid); | |
681 | return err; | |
682 | } | |
683 | val &= 3; | |
684 | if (val == 3) | |
685 | str->can_float = true; | |
686 | if (!(val & 1)) { | |
687 | printk(KERN_ERR SFX "Invalid formats 0x%x for 0x%x", val, nid); | |
688 | return -EINVAL; | |
689 | } | |
690 | return 0; | |
691 | } | |
692 | ||
e23e7a14 | 693 | int lola_init_pcm(struct lola *chip, int dir, int *nidp) |
d43f3010 TI |
694 | { |
695 | struct lola_pcm *pcm = &chip->pcm[dir]; | |
696 | int i, nid, err; | |
697 | ||
698 | nid = *nidp; | |
699 | for (i = 0; i < pcm->num_streams; i++, nid++) { | |
700 | err = lola_init_stream(chip, &pcm->streams[i], i, nid, dir); | |
701 | if (err < 0) | |
702 | return err; | |
703 | } | |
704 | *nidp = nid; | |
705 | return 0; | |
706 | } |