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dm: split discard requests on target boundaries
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / sound / isa / msnd / msnd.c
blob3a1526ae1729ace425a340b11a5cc1aa015d507c
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
55 void 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 }
62 EXPORT_SYMBOL(snd_msnd_init_queue);
63
64 static 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
76 static 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
88 int 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 }
104 EXPORT_SYMBOL(snd_msnd_send_dsp_cmd);
105
106 int 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 }
122 EXPORT_SYMBOL(snd_msnd_send_word);
123
124 int 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 }
143 EXPORT_SYMBOL(snd_msnd_upload_host);
144
145 int 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 }
174 EXPORT_SYMBOL(snd_msnd_enable_irq);
175
176 int 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 }
204 EXPORT_SYMBOL(snd_msnd_disable_irq);
205
206 static 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
212 static 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
227 void 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 }
254 EXPORT_SYMBOL(snd_msnd_dsp_halt);
255
256
257 int 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 }
304 EXPORT_SYMBOL(snd_msnd_DARQ);
305
306 int 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 }
364 EXPORT_SYMBOL(snd_msnd_DAPQ);
365
366 static 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
394 static 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
438 static 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 SNDRV_PCM_INFO_BATCH,
443 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
444 .rates = SNDRV_PCM_RATE_8000_48000,
445 .rate_min = 8000,
446 .rate_max = 48000,
447 .channels_min = 1,
448 .channels_max = 2,
449 .buffer_bytes_max = 0x3000,
450 .period_bytes_min = 0x40,
451 .period_bytes_max = 0x1800,
452 .periods_min = 2,
453 .periods_max = 3,
454 .fifo_size = 0,
455 };
456
457 static struct snd_pcm_hardware snd_msnd_capture = {
458 .info = SNDRV_PCM_INFO_MMAP |
459 SNDRV_PCM_INFO_INTERLEAVED |
460 SNDRV_PCM_INFO_MMAP_VALID |
461 SNDRV_PCM_INFO_BATCH,
462 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
463 .rates = SNDRV_PCM_RATE_8000_48000,
464 .rate_min = 8000,
465 .rate_max = 48000,
466 .channels_min = 1,
467 .channels_max = 2,
468 .buffer_bytes_max = 0x3000,
469 .period_bytes_min = 0x40,
470 .period_bytes_max = 0x1800,
471 .periods_min = 2,
472 .periods_max = 3,
473 .fifo_size = 0,
474 };
475
476
477 static int snd_msnd_playback_open(struct snd_pcm_substream *substream)
478 {
479 struct snd_pcm_runtime *runtime = substream->runtime;
480 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
481
482 set_bit(F_AUDIO_WRITE_INUSE, &chip->flags);
483 clear_bit(F_WRITING, &chip->flags);
484 snd_msnd_enable_irq(chip);
485
486 runtime->dma_area = chip->mappedbase;
487 runtime->dma_bytes = 0x3000;
488
489 chip->playback_substream = substream;
490 runtime->hw = snd_msnd_playback;
491 return 0;
492 }
493
494 static int snd_msnd_playback_close(struct snd_pcm_substream *substream)
495 {
496 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
497
498 snd_msnd_disable_irq(chip);
499 clear_bit(F_AUDIO_WRITE_INUSE, &chip->flags);
500 return 0;
501 }
502
503
504 static int snd_msnd_playback_hw_params(struct snd_pcm_substream *substream,
505 struct snd_pcm_hw_params *params)
506 {
507 int i;
508 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
509 void *pDAQ = chip->mappedbase + DAPQ_DATA_BUFF;
510
511 chip->play_sample_size = snd_pcm_format_width(params_format(params));
512 chip->play_channels = params_channels(params);
513 chip->play_sample_rate = params_rate(params);
514
515 for (i = 0; i < 3; ++i, pDAQ += DAQDS__size) {
516 writew(chip->play_sample_size, pDAQ + DAQDS_wSampleSize);
517 writew(chip->play_channels, pDAQ + DAQDS_wChannels);
518 writew(chip->play_sample_rate, pDAQ + DAQDS_wSampleRate);
519 }
520 /* dont do this here:
521 * snd_msnd_calibrate_adc(chip->play_sample_rate);
522 */
523
524 return 0;
525 }
526
527 static int snd_msnd_playback_prepare(struct snd_pcm_substream *substream)
528 {
529 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
530 unsigned int pcm_size = snd_pcm_lib_buffer_bytes(substream);
531 unsigned int pcm_count = snd_pcm_lib_period_bytes(substream);
532 unsigned int pcm_periods = pcm_size / pcm_count;
533
534 snd_msnd_play_reset_queue(chip, pcm_periods, pcm_count);
535 chip->playDMAPos = 0;
536 return 0;
537 }
538
539 static int snd_msnd_playback_trigger(struct snd_pcm_substream *substream,
540 int cmd)
541 {
542 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
543 int result = 0;
544
545 if (cmd == SNDRV_PCM_TRIGGER_START) {
546 snd_printdd("snd_msnd_playback_trigger(START)\n");
547 chip->banksPlayed = 0;
548 set_bit(F_WRITING, &chip->flags);
549 snd_msnd_DAPQ(chip, 1);
550 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
551 snd_printdd("snd_msnd_playback_trigger(STop)\n");
552 /* interrupt diagnostic, comment this out later */
553 clear_bit(F_WRITING, &chip->flags);
554 snd_msnd_send_dsp_cmd(chip, HDEX_PLAY_STOP);
555 } else {
556 snd_printd(KERN_ERR "snd_msnd_playback_trigger(?????)\n");
557 result = -EINVAL;
558 }
559
560 snd_printdd("snd_msnd_playback_trigger() ENDE\n");
561 return result;
562 }
563
564 static snd_pcm_uframes_t
565 snd_msnd_playback_pointer(struct snd_pcm_substream *substream)
566 {
567 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
568
569 return bytes_to_frames(substream->runtime, chip->playDMAPos);
570 }
571
572
573 static struct snd_pcm_ops snd_msnd_playback_ops = {
574 .open = snd_msnd_playback_open,
575 .close = snd_msnd_playback_close,
576 .ioctl = snd_pcm_lib_ioctl,
577 .hw_params = snd_msnd_playback_hw_params,
578 .prepare = snd_msnd_playback_prepare,
579 .trigger = snd_msnd_playback_trigger,
580 .pointer = snd_msnd_playback_pointer,
581 };
582
583 static int snd_msnd_capture_open(struct snd_pcm_substream *substream)
584 {
585 struct snd_pcm_runtime *runtime = substream->runtime;
586 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
587
588 set_bit(F_AUDIO_READ_INUSE, &chip->flags);
589 snd_msnd_enable_irq(chip);
590 runtime->dma_area = chip->mappedbase + 0x3000;
591 runtime->dma_bytes = 0x3000;
592 memset(runtime->dma_area, 0, runtime->dma_bytes);
593 chip->capture_substream = substream;
594 runtime->hw = snd_msnd_capture;
595 return 0;
596 }
597
598 static int snd_msnd_capture_close(struct snd_pcm_substream *substream)
599 {
600 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
601
602 snd_msnd_disable_irq(chip);
603 clear_bit(F_AUDIO_READ_INUSE, &chip->flags);
604 return 0;
605 }
606
607 static int snd_msnd_capture_prepare(struct snd_pcm_substream *substream)
608 {
609 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
610 unsigned int pcm_size = snd_pcm_lib_buffer_bytes(substream);
611 unsigned int pcm_count = snd_pcm_lib_period_bytes(substream);
612 unsigned int pcm_periods = pcm_size / pcm_count;
613
614 snd_msnd_capture_reset_queue(chip, pcm_periods, pcm_count);
615 chip->captureDMAPos = 0;
616 return 0;
617 }
618
619 static int snd_msnd_capture_trigger(struct snd_pcm_substream *substream,
620 int cmd)
621 {
622 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
623
624 if (cmd == SNDRV_PCM_TRIGGER_START) {
625 chip->last_recbank = -1;
626 set_bit(F_READING, &chip->flags);
627 if (snd_msnd_send_dsp_cmd(chip, HDEX_RECORD_START) == 0)
628 return 0;
629
630 clear_bit(F_READING, &chip->flags);
631 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
632 clear_bit(F_READING, &chip->flags);
633 snd_msnd_send_dsp_cmd(chip, HDEX_RECORD_STOP);
634 return 0;
635 }
636 return -EINVAL;
637 }
638
639
640 static snd_pcm_uframes_t
641 snd_msnd_capture_pointer(struct snd_pcm_substream *substream)
642 {
643 struct snd_pcm_runtime *runtime = substream->runtime;
644 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
645
646 return bytes_to_frames(runtime, chip->captureDMAPos);
647 }
648
649
650 static int snd_msnd_capture_hw_params(struct snd_pcm_substream *substream,
651 struct snd_pcm_hw_params *params)
652 {
653 int i;
654 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
655 void *pDAQ = chip->mappedbase + DARQ_DATA_BUFF;
656
657 chip->capture_sample_size = snd_pcm_format_width(params_format(params));
658 chip->capture_channels = params_channels(params);
659 chip->capture_sample_rate = params_rate(params);
660
661 for (i = 0; i < 3; ++i, pDAQ += DAQDS__size) {
662 writew(chip->capture_sample_size, pDAQ + DAQDS_wSampleSize);
663 writew(chip->capture_channels, pDAQ + DAQDS_wChannels);
664 writew(chip->capture_sample_rate, pDAQ + DAQDS_wSampleRate);
665 }
666 return 0;
667 }
668
669
670 static struct snd_pcm_ops snd_msnd_capture_ops = {
671 .open = snd_msnd_capture_open,
672 .close = snd_msnd_capture_close,
673 .ioctl = snd_pcm_lib_ioctl,
674 .hw_params = snd_msnd_capture_hw_params,
675 .prepare = snd_msnd_capture_prepare,
676 .trigger = snd_msnd_capture_trigger,
677 .pointer = snd_msnd_capture_pointer,
678 };
679
680
681 int snd_msnd_pcm(struct snd_card *card, int device,
682 struct snd_pcm **rpcm)
683 {
684 struct snd_msnd *chip = card->private_data;
685 struct snd_pcm *pcm;
686 int err;
687
688 err = snd_pcm_new(card, "MSNDPINNACLE", device, 1, 1, &pcm);
689 if (err < 0)
690 return err;
691
692 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_msnd_playback_ops);
693 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_msnd_capture_ops);
694
695 pcm->private_data = chip;
696 strcpy(pcm->name, "Hurricane");
697
698
699 if (rpcm)
700 *rpcm = pcm;
701 return 0;
702 }
703 EXPORT_SYMBOL(snd_msnd_pcm);
704
705 MODULE_DESCRIPTION("Common routines for Turtle Beach Multisound drivers");
706 MODULE_LICENSE("GPL");
707
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree