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ALSA: Turtle Beach Multisound Classic/Pinnacle driver
[deliverable/linux.git] / sound / isa / msnd / msnd.c
CommitLineData
f6c63835
KH		 1/*********************************************************************
2 *
3 * 2002/06/30 Karsten Wiese:
4 * removed kernel-version dependencies.
5 * ripped from linux kernel 2.4.18 (OSS Implementation) by me.
6 * In the OSS Version, this file is compiled to a separate MODULE,
7 * that is used by the pinnacle and the classic driver.
8 * since there is no classic driver for alsa yet (i dont have a classic
9 * & writing one blindfold is difficult) this file's object is statically
10 * linked into the pinnacle-driver-module for now. look for the string
11 * "uncomment this to make this a module again"
12 * to do guess what.
13 *
14 * the following is a copy of the 2.4.18 OSS FREE file-heading comment:
15 *
16 * msnd.c - Driver Base
17 *
18 * Turtle Beach MultiSound Sound Card Driver for Linux
19 *
20 * Copyright (C) 1998 Andrew Veliath
21 *
22 * This program is free software; you can redistribute it and/or modify
23 * it under the terms of the GNU General Public License as published by
24 * the Free Software Foundation; either version 2 of the License, or
25 * (at your option) any later version.
26 *
27 * This program is distributed in the hope that it will be useful,
28 * but WITHOUT ANY WARRANTY; without even the implied warranty of
29 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30 * GNU General Public License for more details.
31 *
32 * You should have received a copy of the GNU General Public License
33 * along with this program; if not, write to the Free Software
34 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
35 *
36 ********************************************************************/
37
38#include <linux/kernel.h>
39#include <linux/types.h>
40#include <linux/interrupt.h>
41#include <linux/io.h>
42#include <linux/fs.h>
43#include <linux/delay.h>
44
45#include <sound/core.h>
46#include <sound/initval.h>
47#include <sound/pcm.h>
48#include <sound/pcm_params.h>
49
50#include "msnd.h"
51
52#define LOGNAME "msnd"
53
54
55void snd_msnd_init_queue(void *base, int start, int size)
56{
57 writew(PCTODSP_BASED(start), base + JQS_wStart);
58 writew(PCTODSP_OFFSET(size) - 1, base + JQS_wSize);
59 writew(0, base + JQS_wHead);
60 writew(0, base + JQS_wTail);
61}
62EXPORT_SYMBOL(snd_msnd_init_queue);
63
64static int snd_msnd_wait_TXDE(struct snd_msnd *dev)
65{
66 unsigned int io = dev->io;
67 int timeout = 1000;
68
69 while (timeout-- > 0)
70 if (inb(io + HP_ISR) & HPISR_TXDE)
71 return 0;
72
73 return -EIO;
74}
75
76static int snd_msnd_wait_HC0(struct snd_msnd *dev)
77{
78 unsigned int io = dev->io;
79 int timeout = 1000;
80
81 while (timeout-- > 0)
82 if (!(inb(io + HP_CVR) & HPCVR_HC))
83 return 0;
84
85 return -EIO;
86}
87
88int snd_msnd_send_dsp_cmd(struct snd_msnd *dev, u8 cmd)
89{
90 unsigned long flags;
91
92 spin_lock_irqsave(&dev->lock, flags);
93 if (snd_msnd_wait_HC0(dev) == 0) {
94 outb(cmd, dev->io + HP_CVR);
95 spin_unlock_irqrestore(&dev->lock, flags);
96 return 0;
97 }
98 spin_unlock_irqrestore(&dev->lock, flags);
99
100 snd_printd(KERN_ERR LOGNAME ": Send DSP command timeout\n");
101
102 return -EIO;
103}
104EXPORT_SYMBOL(snd_msnd_send_dsp_cmd);
105
106int snd_msnd_send_word(struct snd_msnd *dev, unsigned char high,
107 unsigned char mid, unsigned char low)
108{
109 unsigned int io = dev->io;
110
111 if (snd_msnd_wait_TXDE(dev) == 0) {
112 outb(high, io + HP_TXH);
113 outb(mid, io + HP_TXM);
114 outb(low, io + HP_TXL);
115 return 0;
116 }
117
118 snd_printd(KERN_ERR LOGNAME ": Send host word timeout\n");
119
120 return -EIO;
121}
122EXPORT_SYMBOL(snd_msnd_send_word);
123
124int snd_msnd_upload_host(struct snd_msnd *dev, const u8 *bin, int len)
125{
126 int i;
127
128 if (len % 3 != 0) {
129 snd_printk(KERN_ERR LOGNAME
130 ": Upload host data not multiple of 3!\n");
131 return -EINVAL;
132 }
133
134 for (i = 0; i < len; i += 3)
135 if (snd_msnd_send_word(dev, bin[i], bin[i + 1], bin[i + 2]))
136 return -EIO;
137
138 inb(dev->io + HP_RXL);
139 inb(dev->io + HP_CVR);
140
141 return 0;
142}
143EXPORT_SYMBOL(snd_msnd_upload_host);
144
145int snd_msnd_enable_irq(struct snd_msnd *dev)
146{
147 unsigned long flags;
148
149 if (dev->irq_ref++)
150 return 0;
151
152 snd_printdd(LOGNAME ": Enabling IRQ\n");
153
154 spin_lock_irqsave(&dev->lock, flags);
155 if (snd_msnd_wait_TXDE(dev) == 0) {
156 outb(inb(dev->io + HP_ICR) | HPICR_TREQ, dev->io + HP_ICR);
157 if (dev->type == msndClassic)
158 outb(dev->irqid, dev->io + HP_IRQM);
159
160 outb(inb(dev->io + HP_ICR) & ~HPICR_TREQ, dev->io + HP_ICR);
161 outb(inb(dev->io + HP_ICR) | HPICR_RREQ, dev->io + HP_ICR);
162 enable_irq(dev->irq);
163 snd_msnd_init_queue(dev->DSPQ, dev->dspq_data_buff,
164 dev->dspq_buff_size);
165 spin_unlock_irqrestore(&dev->lock, flags);
166 return 0;
167 }
168 spin_unlock_irqrestore(&dev->lock, flags);
169
170 snd_printd(KERN_ERR LOGNAME ": Enable IRQ failed\n");
171
172 return -EIO;
173}
174EXPORT_SYMBOL(snd_msnd_enable_irq);
175
176int snd_msnd_disable_irq(struct snd_msnd *dev)
177{
178 unsigned long flags;
179
180 if (--dev->irq_ref > 0)
181 return 0;
182
183 if (dev->irq_ref < 0)
184 snd_printd(KERN_WARNING LOGNAME ": IRQ ref count is %d\n",
185 dev->irq_ref);
186
187 snd_printdd(LOGNAME ": Disabling IRQ\n");
188
189 spin_lock_irqsave(&dev->lock, flags);
190 if (snd_msnd_wait_TXDE(dev) == 0) {
191 outb(inb(dev->io + HP_ICR) & ~HPICR_RREQ, dev->io + HP_ICR);
192 if (dev->type == msndClassic)
193 outb(HPIRQ_NONE, dev->io + HP_IRQM);
194 disable_irq(dev->irq);
195 spin_unlock_irqrestore(&dev->lock, flags);
196 return 0;
197 }
198 spin_unlock_irqrestore(&dev->lock, flags);
199
200 snd_printd(KERN_ERR LOGNAME ": Disable IRQ failed\n");
201
202 return -EIO;
203}
204EXPORT_SYMBOL(snd_msnd_disable_irq);
205
206static inline long get_play_delay_jiffies(struct snd_msnd *chip, long size)
207{
208 long tmp = (size * HZ * chip->play_sample_size) / 8;
209 return tmp / (chip->play_sample_rate * chip->play_channels);
210}
211
212static void snd_msnd_dsp_write_flush(struct snd_msnd *chip)
213{
214 if (!(chip->mode & FMODE_WRITE) || !test_bit(F_WRITING, &chip->flags))
215 return;
216 set_bit(F_WRITEFLUSH, &chip->flags);
217/* interruptible_sleep_on_timeout(
218 &chip->writeflush,
219 get_play_delay_jiffies(&chip, chip->DAPF.len));*/
220 clear_bit(F_WRITEFLUSH, &chip->flags);
221 if (!signal_pending(current))
222 schedule_timeout_interruptible(
223 get_play_delay_jiffies(chip, chip->play_period_bytes));
224 clear_bit(F_WRITING, &chip->flags);
225}
226
227void snd_msnd_dsp_halt(struct snd_msnd *chip, struct file *file)
228{
229 if ((file ? file->f_mode : chip->mode) & FMODE_READ) {
230 clear_bit(F_READING, &chip->flags);
231 snd_msnd_send_dsp_cmd(chip, HDEX_RECORD_STOP);
232 snd_msnd_disable_irq(chip);
233 if (file) {
234 snd_printd(KERN_INFO LOGNAME
235 ": Stopping read for %p\n", file);
236 chip->mode &= ~FMODE_READ;
237 }
238 clear_bit(F_AUDIO_READ_INUSE, &chip->flags);
239 }
240 if ((file ? file->f_mode : chip->mode) & FMODE_WRITE) {
241 if (test_bit(F_WRITING, &chip->flags)) {
242 snd_msnd_dsp_write_flush(chip);
243 snd_msnd_send_dsp_cmd(chip, HDEX_PLAY_STOP);
244 }
245 snd_msnd_disable_irq(chip);
246 if (file) {
247 snd_printd(KERN_INFO
248 LOGNAME ": Stopping write for %p\n", file);
249 chip->mode &= ~FMODE_WRITE;
250 }
251 clear_bit(F_AUDIO_WRITE_INUSE, &chip->flags);
252 }
253}
254EXPORT_SYMBOL(snd_msnd_dsp_halt);
255
256
257int snd_msnd_DARQ(struct snd_msnd *chip, int bank)
258{
259 int /*size, n,*/ timeout = 3;
260 u16 wTmp;
261 /* void *DAQD; */
262
263 /* Increment the tail and check for queue wrap */
264 wTmp = readw(chip->DARQ + JQS_wTail) + PCTODSP_OFFSET(DAQDS__size);
265 if (wTmp > readw(chip->DARQ + JQS_wSize))
266 wTmp = 0;
267 while (wTmp == readw(chip->DARQ + JQS_wHead) && timeout--)
268 udelay(1);
269
270 if (chip->capturePeriods == 2) {
271 void *pDAQ = chip->mappedbase + DARQ_DATA_BUFF +
272 bank * DAQDS__size + DAQDS_wStart;
273 unsigned short offset = 0x3000 + chip->capturePeriodBytes;
274
275 if (readw(pDAQ) != PCTODSP_BASED(0x3000))
276 offset = 0x3000;
277 writew(PCTODSP_BASED(offset), pDAQ);
278 }
279
280 writew(wTmp, chip->DARQ + JQS_wTail);
281
282#if 0
283 /* Get our digital audio queue struct */
284 DAQD = bank * DAQDS__size + chip->mappedbase + DARQ_DATA_BUFF;
285
286 /* Get length of data */
287 size = readw(DAQD + DAQDS_wSize);
288
289 /* Read data from the head (unprotected bank 1 access okay
290 since this is only called inside an interrupt) */
291 outb(HPBLKSEL_1, chip->io + HP_BLKS);
292 n = msnd_fifo_write(&chip->DARF,
293 (char *)(chip->base + bank * DAR_BUFF_SIZE),
294 size, 0);
295 if (n <= 0) {
296 outb(HPBLKSEL_0, chip->io + HP_BLKS);
297 return n;
298 }
299 outb(HPBLKSEL_0, chip->io + HP_BLKS);
300#endif
301
302 return 1;
303}
304EXPORT_SYMBOL(snd_msnd_DARQ);
305
306int snd_msnd_DAPQ(struct snd_msnd *chip, int start)
307{
308 u16 DAPQ_tail;
309 int protect = start, nbanks = 0;
310 void *DAQD;
311 static int play_banks_submitted;
312 /* unsigned long flags;
313 spin_lock_irqsave(&chip->lock, flags); not necessary */
314
315 DAPQ_tail = readw(chip->DAPQ + JQS_wTail);
316 while (DAPQ_tail != readw(chip->DAPQ + JQS_wHead) || start) {
317 int bank_num = DAPQ_tail / PCTODSP_OFFSET(DAQDS__size);
318
319 if (start) {
320 start = 0;
321 play_banks_submitted = 0;
322 }
323
324 /* Get our digital audio queue struct */
325 DAQD = bank_num * DAQDS__size + chip->mappedbase +
326 DAPQ_DATA_BUFF;
327
328 /* Write size of this bank */
329 writew(chip->play_period_bytes, DAQD + DAQDS_wSize);
330 if (play_banks_submitted < 3)
331 ++play_banks_submitted;
332 else if (chip->playPeriods == 2) {
333 unsigned short offset = chip->play_period_bytes;
334
335 if (readw(DAQD + DAQDS_wStart) != PCTODSP_BASED(0x0))
336 offset = 0;
337
338 writew(PCTODSP_BASED(offset), DAQD + DAQDS_wStart);
339 }
340 ++nbanks;
341
342 /* Then advance the tail */
343 /*
344 if (protect)
345 snd_printd(KERN_INFO "B %X %lX\n",
346 bank_num, xtime.tv_usec);
347 */
348
349 DAPQ_tail = (++bank_num % 3) * PCTODSP_OFFSET(DAQDS__size);
350 writew(DAPQ_tail, chip->DAPQ + JQS_wTail);
351 /* Tell the DSP to play the bank */
352 snd_msnd_send_dsp_cmd(chip, HDEX_PLAY_START);
353 if (protect)
354 if (2 == bank_num)
355 break;
356 }
357 /*
358 if (protect)
359 snd_printd(KERN_INFO "%lX\n", xtime.tv_usec);
360 */
361 /* spin_unlock_irqrestore(&chip->lock, flags); not necessary */
362 return nbanks;
363}
364EXPORT_SYMBOL(snd_msnd_DAPQ);
365
366static void snd_msnd_play_reset_queue(struct snd_msnd *chip,
367 unsigned int pcm_periods,
368 unsigned int pcm_count)
369{
370 int n;
371 void *pDAQ = chip->mappedbase + DAPQ_DATA_BUFF;
372
373 chip->last_playbank = -1;
374 chip->playLimit = pcm_count * (pcm_periods - 1);
375 chip->playPeriods = pcm_periods;
376 writew(PCTODSP_OFFSET(0 * DAQDS__size), chip->DAPQ + JQS_wHead);
377 writew(PCTODSP_OFFSET(0 * DAQDS__size), chip->DAPQ + JQS_wTail);
378
379 chip->play_period_bytes = pcm_count;
380
381 for (n = 0; n < pcm_periods; ++n, pDAQ += DAQDS__size) {
382 writew(PCTODSP_BASED((u32)(pcm_count * n)),
383 pDAQ + DAQDS_wStart);
384 writew(0, pDAQ + DAQDS_wSize);
385 writew(1, pDAQ + DAQDS_wFormat);
386 writew(chip->play_sample_size, pDAQ + DAQDS_wSampleSize);
387 writew(chip->play_channels, pDAQ + DAQDS_wChannels);
388 writew(chip->play_sample_rate, pDAQ + DAQDS_wSampleRate);
389 writew(HIMT_PLAY_DONE * 0x100 + n, pDAQ + DAQDS_wIntMsg);
390 writew(n, pDAQ + DAQDS_wFlags);
391 }
392}
393
394static void snd_msnd_capture_reset_queue(struct snd_msnd *chip,
395 unsigned int pcm_periods,
396 unsigned int pcm_count)
397{
398 int n;
399 void *pDAQ;
400 /* unsigned long flags; */
401
402 /* snd_msnd_init_queue(chip->DARQ, DARQ_DATA_BUFF, DARQ_BUFF_SIZE); */
403
404 chip->last_recbank = 2;
405 chip->captureLimit = pcm_count * (pcm_periods - 1);
406 chip->capturePeriods = pcm_periods;
407 writew(PCTODSP_OFFSET(0 * DAQDS__size), chip->DARQ + JQS_wHead);
408 writew(PCTODSP_OFFSET(chip->last_recbank * DAQDS__size),
409 chip->DARQ + JQS_wTail);
410
411#if 0 /* Critical section: bank 1 access. this is how the OSS driver does it:*/
412 spin_lock_irqsave(&chip->lock, flags);
413 outb(HPBLKSEL_1, chip->io + HP_BLKS);
414 memset_io(chip->mappedbase, 0, DAR_BUFF_SIZE * 3);
415 outb(HPBLKSEL_0, chip->io + HP_BLKS);
416 spin_unlock_irqrestore(&chip->lock, flags);
417#endif
418
419 chip->capturePeriodBytes = pcm_count;
420 snd_printdd("snd_msnd_capture_reset_queue() %i\n", pcm_count);
421
422 pDAQ = chip->mappedbase + DARQ_DATA_BUFF;
423
424 for (n = 0; n < pcm_periods; ++n, pDAQ += DAQDS__size) {
425 u32 tmp = pcm_count * n;
426
427 writew(PCTODSP_BASED(tmp + 0x3000), pDAQ + DAQDS_wStart);
428 writew(pcm_count, pDAQ + DAQDS_wSize);
429 writew(1, pDAQ + DAQDS_wFormat);
430 writew(chip->capture_sample_size, pDAQ + DAQDS_wSampleSize);
431 writew(chip->capture_channels, pDAQ + DAQDS_wChannels);
432 writew(chip->capture_sample_rate, pDAQ + DAQDS_wSampleRate);
433 writew(HIMT_RECORD_DONE * 0x100 + n, pDAQ + DAQDS_wIntMsg);
434 writew(n, pDAQ + DAQDS_wFlags);
435 }
436}
437
438static struct snd_pcm_hardware snd_msnd_playback = {
439 .info = SNDRV_PCM_INFO_MMAP |
440 SNDRV_PCM_INFO_INTERLEAVED |
441 SNDRV_PCM_INFO_MMAP_VALID,
442 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
443 .rates = SNDRV_PCM_RATE_8000_48000,
444 .rate_min = 8000,
445 .rate_max = 48000,
446 .channels_min = 1,
447 .channels_max = 2,
448 .buffer_bytes_max = 0x3000,
449 .period_bytes_min = 0x40,
450 .period_bytes_max = 0x1800,
451 .periods_min = 2,
452 .periods_max = 3,
453 .fifo_size = 0,
454};
455
456static struct snd_pcm_hardware snd_msnd_capture = {
457 .info = SNDRV_PCM_INFO_MMAP |
458 SNDRV_PCM_INFO_INTERLEAVED |
459 SNDRV_PCM_INFO_MMAP_VALID,
460 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
461 .rates = SNDRV_PCM_RATE_8000_48000,
462 .rate_min = 8000,
463 .rate_max = 48000,
464 .channels_min = 1,
465 .channels_max = 2,
466 .buffer_bytes_max = 0x3000,
467 .period_bytes_min = 0x40,
468 .period_bytes_max = 0x1800,
469 .periods_min = 2,
470 .periods_max = 3,
471 .fifo_size = 0,
472};
473
474
475static int snd_msnd_playback_open(struct snd_pcm_substream *substream)
476{
477 struct snd_pcm_runtime *runtime = substream->runtime;
478 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
479
480 set_bit(F_AUDIO_WRITE_INUSE, &chip->flags);
481 clear_bit(F_WRITING, &chip->flags);
482 snd_msnd_enable_irq(chip);
483
484 runtime->dma_area = chip->mappedbase;
485 runtime->dma_bytes = 0x3000;
486
487 chip->playback_substream = substream;
488 runtime->hw = snd_msnd_playback;
489 return 0;
490}
491
492static int snd_msnd_playback_close(struct snd_pcm_substream *substream)
493{
494 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
495
496 snd_msnd_disable_irq(chip);
497 clear_bit(F_AUDIO_WRITE_INUSE, &chip->flags);
498 return 0;
499}
500
501
502static int snd_msnd_playback_hw_params(struct snd_pcm_substream *substream,
503 struct snd_pcm_hw_params *params)
504{
505 int i;
506 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
507 void *pDAQ = chip->mappedbase + DAPQ_DATA_BUFF;
508
509 chip->play_sample_size = snd_pcm_format_width(params_format(params));
510 chip->play_channels = params_channels(params);
511 chip->play_sample_rate = params_rate(params);
512
513 for (i = 0; i < 3; ++i, pDAQ += DAQDS__size) {
514 writew(chip->play_sample_size, pDAQ + DAQDS_wSampleSize);
515 writew(chip->play_channels, pDAQ + DAQDS_wChannels);
516 writew(chip->play_sample_rate, pDAQ + DAQDS_wSampleRate);
517 }
518 /* dont do this here:
519 * snd_msnd_calibrate_adc(chip->play_sample_rate);
520 */
521
522 return 0;
523}
524
525static int snd_msnd_playback_prepare(struct snd_pcm_substream *substream)
526{
527 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
528 unsigned int pcm_size = snd_pcm_lib_buffer_bytes(substream);
529 unsigned int pcm_count = snd_pcm_lib_period_bytes(substream);
530 unsigned int pcm_periods = pcm_size / pcm_count;
531
532 snd_msnd_play_reset_queue(chip, pcm_periods, pcm_count);
533 chip->playDMAPos = 0;
534 return 0;
535}
536
537static int snd_msnd_playback_trigger(struct snd_pcm_substream *substream,
538 int cmd)
539{
540 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
541 int result = 0;
542
543 if (cmd == SNDRV_PCM_TRIGGER_START) {
544 snd_printdd("snd_msnd_playback_trigger(START)\n");
545 chip->banksPlayed = 0;
546 set_bit(F_WRITING, &chip->flags);
547 snd_msnd_DAPQ(chip, 1);
548 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
549 snd_printdd("snd_msnd_playback_trigger(STop)\n");
550 /* interrupt diagnostic, comment this out later */
551 clear_bit(F_WRITING, &chip->flags);
552 snd_msnd_send_dsp_cmd(chip, HDEX_PLAY_STOP);
553 } else {
554 snd_printd(KERN_ERR "snd_msnd_playback_trigger(?????)\n");
555 result = -EINVAL;
556 }
557
558 snd_printdd("snd_msnd_playback_trigger() ENDE\n");
559 return result;
560}
561
562static snd_pcm_uframes_t
563snd_msnd_playback_pointer(struct snd_pcm_substream *substream)
564{
565 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
566
567 return bytes_to_frames(substream->runtime, chip->playDMAPos);
568}
569
570
571static struct snd_pcm_ops snd_msnd_playback_ops = {
572 .open = snd_msnd_playback_open,
573 .close = snd_msnd_playback_close,
574 .ioctl = snd_pcm_lib_ioctl,
575 .hw_params = snd_msnd_playback_hw_params,
576 .prepare = snd_msnd_playback_prepare,
577 .trigger = snd_msnd_playback_trigger,
578 .pointer = snd_msnd_playback_pointer,
579};
580
581static int snd_msnd_capture_open(struct snd_pcm_substream *substream)
582{
583 struct snd_pcm_runtime *runtime = substream->runtime;
584 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
585
586 set_bit(F_AUDIO_READ_INUSE, &chip->flags);
587 snd_msnd_enable_irq(chip);
588 runtime->dma_area = chip->mappedbase + 0x3000;
589 runtime->dma_bytes = 0x3000;
590 memset(runtime->dma_area, 0, runtime->dma_bytes);
591 chip->capture_substream = substream;
592 runtime->hw = snd_msnd_capture;
593 return 0;
594}
595
596static int snd_msnd_capture_close(struct snd_pcm_substream *substream)
597{
598 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
599
600 snd_msnd_disable_irq(chip);
601 clear_bit(F_AUDIO_READ_INUSE, &chip->flags);
602 return 0;
603}
604
605static int snd_msnd_capture_prepare(struct snd_pcm_substream *substream)
606{
607 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
608 unsigned int pcm_size = snd_pcm_lib_buffer_bytes(substream);
609 unsigned int pcm_count = snd_pcm_lib_period_bytes(substream);
610 unsigned int pcm_periods = pcm_size / pcm_count;
611
612 snd_msnd_capture_reset_queue(chip, pcm_periods, pcm_count);
613 chip->captureDMAPos = 0;
614 return 0;
615}
616
617static int snd_msnd_capture_trigger(struct snd_pcm_substream *substream,
618 int cmd)
619{
620 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
621
622 if (cmd == SNDRV_PCM_TRIGGER_START) {
623 chip->last_recbank = -1;
624 set_bit(F_READING, &chip->flags);
625 if (snd_msnd_send_dsp_cmd(chip, HDEX_RECORD_START) == 0)
626 return 0;
627
628 clear_bit(F_READING, &chip->flags);
629 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
630 clear_bit(F_READING, &chip->flags);
631 snd_msnd_send_dsp_cmd(chip, HDEX_RECORD_STOP);
632 return 0;
633 }
634 return -EINVAL;
635}
636
637
638static snd_pcm_uframes_t
639snd_msnd_capture_pointer(struct snd_pcm_substream *substream)
640{
641 struct snd_pcm_runtime *runtime = substream->runtime;
642 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
643
644 return bytes_to_frames(runtime, chip->captureDMAPos);
645}
646
647
648static int snd_msnd_capture_hw_params(struct snd_pcm_substream *substream,
649 struct snd_pcm_hw_params *params)
650{
651 int i;
652 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
653 void *pDAQ = chip->mappedbase + DARQ_DATA_BUFF;
654
655 chip->capture_sample_size = snd_pcm_format_width(params_format(params));
656 chip->capture_channels = params_channels(params);
657 chip->capture_sample_rate = params_rate(params);
658
659 for (i = 0; i < 3; ++i, pDAQ += DAQDS__size) {
660 writew(chip->capture_sample_size, pDAQ + DAQDS_wSampleSize);
661 writew(chip->capture_channels, pDAQ + DAQDS_wChannels);
662 writew(chip->capture_sample_rate, pDAQ + DAQDS_wSampleRate);
663 }
664 return 0;
665}
666
667
668static struct snd_pcm_ops snd_msnd_capture_ops = {
669 .open = snd_msnd_capture_open,
670 .close = snd_msnd_capture_close,
671 .ioctl = snd_pcm_lib_ioctl,
672 .hw_params = snd_msnd_capture_hw_params,
673 .prepare = snd_msnd_capture_prepare,
674 .trigger = snd_msnd_capture_trigger,
675 .pointer = snd_msnd_capture_pointer,
676};
677
678
679int snd_msnd_pcm(struct snd_card *card, int device,
680 struct snd_pcm **rpcm)
681{
682 struct snd_msnd *chip = card->private_data;
683 struct snd_pcm *pcm;
684 int err;
685
686 err = snd_pcm_new(card, "MSNDPINNACLE", device, 1, 1, &pcm);
687 if (err < 0)
688 return err;
689
690 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_msnd_playback_ops);
691 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_msnd_capture_ops);
692
693 pcm->private_data = chip;
694 strcpy(pcm->name, "Hurricane");
695
696
697 if (rpcm)
698 *rpcm = pcm;
699 return 0;
700}
701EXPORT_SYMBOL(snd_msnd_pcm);
702
Linux kernel - Deliverables
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