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[mirror_ubuntu-hirsute-kernel.git] / drivers / media / usb / cx231xx / cx231xx-audio.c
CommitLineData
e0d3bafd
SD		 1/*
2 * Conexant Cx231xx audio extension
3 *
4 * Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
5 * Based on em28xx driver
6 *
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
e0d3bafd
SD		 17 */
18
589dadf2 19#include "cx231xx.h"
e0d3bafd 20#include <linux/kernel.h>
e0d3bafd
SD		 21#include <linux/init.h>
22#include <linux/sound.h>
23#include <linux/spinlock.h>
24#include <linux/soundcard.h>
25#include <linux/slab.h>
26#include <linux/vmalloc.h>
27#include <linux/proc_fs.h>
28#include <linux/module.h>
29#include <sound/core.h>
30#include <sound/pcm.h>
31#include <sound/pcm_params.h>
32#include <sound/info.h>
33#include <sound/initval.h>
34#include <sound/control.h>
35#include <media/v4l2-common.h>
e0d3bafd
SD		 36
37static int debug;
38module_param(debug, int, 0644);
39MODULE_PARM_DESC(debug, "activates debug info");
40
e0d3bafd
SD		 41static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
42
43static int cx231xx_isoc_audio_deinit(struct cx231xx *dev)
44{
45 int i;
46
336fea92 47 dev_dbg(dev->dev, "Stopping isoc\n");
e0d3bafd 48
e0d3bafd 49 for (i = 0; i < CX231XX_AUDIO_BUFS; i++) {
84b5dbf3
MCC		 50 if (dev->adev.urb[i]) {
51 if (!irqs_disabled())
52 usb_kill_urb(dev->adev.urb[i]);
53 else
54 usb_unlink_urb(dev->adev.urb[i]);
e0d3bafd 55
84b5dbf3
MCC		 56 usb_free_urb(dev->adev.urb[i]);
57 dev->adev.urb[i] = NULL;
e0d3bafd 58
84b5dbf3
MCC		 59 kfree(dev->adev.transfer_buffer[i]);
60 dev->adev.transfer_buffer[i] = NULL;
84b5dbf3 61 }
e0d3bafd
SD		 62 }
63
64 return 0;
65}
66
64fbf444
PB		 67static int cx231xx_bulk_audio_deinit(struct cx231xx *dev)
68{
69 int i;
70
336fea92 71 dev_dbg(dev->dev, "Stopping bulk\n");
64fbf444
PB		 72
73 for (i = 0; i < CX231XX_AUDIO_BUFS; i++) {
74 if (dev->adev.urb[i]) {
75 if (!irqs_disabled())
76 usb_kill_urb(dev->adev.urb[i]);
77 else
78 usb_unlink_urb(dev->adev.urb[i]);
79
80 usb_free_urb(dev->adev.urb[i]);
81 dev->adev.urb[i] = NULL;
82
83 kfree(dev->adev.transfer_buffer[i]);
84 dev->adev.transfer_buffer[i] = NULL;
85 }
86 }
87
88 return 0;
89}
90
e0d3bafd
SD		 91static void cx231xx_audio_isocirq(struct urb *urb)
92{
84b5dbf3
MCC		 93 struct cx231xx *dev = urb->context;
94 int i;
95 unsigned int oldptr;
96 int period_elapsed = 0;
97 int status;
98 unsigned char *cp;
99 unsigned int stride;
e0d3bafd 100 struct snd_pcm_substream *substream;
84b5dbf3
MCC		 101 struct snd_pcm_runtime *runtime;
102
990862a2
MCC		 103 if (dev->state & DEV_DISCONNECTED)
104 return;
105
84b5dbf3
MCC		 106 switch (urb->status) {
107 case 0: /* success */
108 case -ETIMEDOUT: /* NAK */
109 break;
110 case -ECONNRESET: /* kill */
111 case -ENOENT:
112 case -ESHUTDOWN:
113 return;
114 default: /* error */
336fea92 115 dev_dbg(dev->dev, "urb completition error %d.\n",
56d8a3b0 116 urb->status);
84b5dbf3 117 break;
e0d3bafd
SD		 118 }
119
61b04cb2
MCC		 120 if (atomic_read(&dev->stream_started) == 0)
121 return;
122
e0d3bafd
SD		 123 if (dev->adev.capture_pcm_substream) {
124 substream = dev->adev.capture_pcm_substream;
125 runtime = substream->runtime;
126 stride = runtime->frame_bits >> 3;
127
128 for (i = 0; i < urb->number_of_packets; i++) {
cde4362f
MCC		 129 int length = urb->iso_frame_desc[i].actual_length /
130 stride;
e0d3bafd 131 cp = (unsigned char *)urb->transfer_buffer +
cde4362f 132 urb->iso_frame_desc[i].offset;
e0d3bafd
SD		 133
134 if (!length)
135 continue;
136
137 oldptr = dev->adev.hwptr_done_capture;
138 if (oldptr + length >= runtime->buffer_size) {
cde4362f
MCC		 139 unsigned int cnt;
140
141 cnt = runtime->buffer_size - oldptr;
e0d3bafd
SD		 142 memcpy(runtime->dma_area + oldptr * stride, cp,
143 cnt * stride);
144 memcpy(runtime->dma_area, cp + cnt * stride,
145 length * stride - cnt * stride);
146 } else {
147 memcpy(runtime->dma_area + oldptr * stride, cp,
148 length * stride);
149 }
150
151 snd_pcm_stream_lock(substream);
152
153 dev->adev.hwptr_done_capture += length;
b9255176
SD		 154 if (dev->adev.hwptr_done_capture >=
155 runtime->buffer_size)
156 dev->adev.hwptr_done_capture -=
157 runtime->buffer_size;
e0d3bafd
SD		 158
159 dev->adev.capture_transfer_done += length;
b9255176
SD		 160 if (dev->adev.capture_transfer_done >=
161 runtime->period_size) {
162 dev->adev.capture_transfer_done -=
163 runtime->period_size;
e0d3bafd
SD		 164 period_elapsed = 1;
165 }
e0d3bafd
SD		 166 snd_pcm_stream_unlock(substream);
167 }
168 if (period_elapsed)
169 snd_pcm_period_elapsed(substream);
170 }
171 urb->status = 0;
172
173 status = usb_submit_urb(urb, GFP_ATOMIC);
174 if (status < 0) {
336fea92 175 dev_err(dev->dev,
b7085c08
MCC		 176 "resubmit of audio urb failed (error=%i)\n",
177 status);
e0d3bafd
SD		 178 }
179 return;
180}
181
64fbf444
PB		 182static void cx231xx_audio_bulkirq(struct urb *urb)
183{
184 struct cx231xx *dev = urb->context;
185 unsigned int oldptr;
186 int period_elapsed = 0;
187 int status;
188 unsigned char *cp;
189 unsigned int stride;
190 struct snd_pcm_substream *substream;
191 struct snd_pcm_runtime *runtime;
192
990862a2
MCC		 193 if (dev->state & DEV_DISCONNECTED)
194 return;
195
64fbf444
PB		 196 switch (urb->status) {
197 case 0: /* success */
198 case -ETIMEDOUT: /* NAK */
199 break;
200 case -ECONNRESET: /* kill */
201 case -ENOENT:
202 case -ESHUTDOWN:
203 return;
204 default: /* error */
336fea92 205 dev_dbg(dev->dev, "urb completition error %d.\n",
56d8a3b0 206 urb->status);
64fbf444
PB		 207 break;
208 }
209
61b04cb2
MCC		 210 if (atomic_read(&dev->stream_started) == 0)
211 return;
212
64fbf444
PB		 213 if (dev->adev.capture_pcm_substream) {
214 substream = dev->adev.capture_pcm_substream;
215 runtime = substream->runtime;
216 stride = runtime->frame_bits >> 3;
217
218 if (1) {
219 int length = urb->actual_length /
220 stride;
221 cp = (unsigned char *)urb->transfer_buffer;
222
223 oldptr = dev->adev.hwptr_done_capture;
224 if (oldptr + length >= runtime->buffer_size) {
225 unsigned int cnt;
226
227 cnt = runtime->buffer_size - oldptr;
228 memcpy(runtime->dma_area + oldptr * stride, cp,
229 cnt * stride);
230 memcpy(runtime->dma_area, cp + cnt * stride,
231 length * stride - cnt * stride);
232 } else {
233 memcpy(runtime->dma_area + oldptr * stride, cp,
234 length * stride);
235 }
236
237 snd_pcm_stream_lock(substream);
238
239 dev->adev.hwptr_done_capture += length;
240 if (dev->adev.hwptr_done_capture >=
241 runtime->buffer_size)
242 dev->adev.hwptr_done_capture -=
243 runtime->buffer_size;
244
245 dev->adev.capture_transfer_done += length;
246 if (dev->adev.capture_transfer_done >=
247 runtime->period_size) {
248 dev->adev.capture_transfer_done -=
249 runtime->period_size;
250 period_elapsed = 1;
251 }
252 snd_pcm_stream_unlock(substream);
253 }
254 if (period_elapsed)
255 snd_pcm_period_elapsed(substream);
256 }
257 urb->status = 0;
258
259 status = usb_submit_urb(urb, GFP_ATOMIC);
260 if (status < 0) {
336fea92 261 dev_err(dev->dev,
b7085c08
MCC		 262 "resubmit of audio urb failed (error=%i)\n",
263 status);
64fbf444
PB		 264 }
265 return;
266}
267
e0d3bafd
SD		 268static int cx231xx_init_audio_isoc(struct cx231xx *dev)
269{
84b5dbf3
MCC		 270 int i, errCode;
271 int sb_size;
e0d3bafd 272
336fea92 273 dev_dbg(dev->dev,
b7085c08 274 "%s: Starting ISO AUDIO transfers\n", __func__);
e0d3bafd 275
990862a2
MCC		 276 if (dev->state & DEV_DISCONNECTED)
277 return -ENODEV;
278
64fbf444 279 sb_size = CX231XX_ISO_NUM_AUDIO_PACKETS * dev->adev.max_pkt_size;
e0d3bafd
SD		 280
281 for (i = 0; i < CX231XX_AUDIO_BUFS; i++) {
282 struct urb *urb;
283 int j, k;
284
285 dev->adev.transfer_buffer[i] = kmalloc(sb_size, GFP_ATOMIC);
286 if (!dev->adev.transfer_buffer[i])
287 return -ENOMEM;
288
289 memset(dev->adev.transfer_buffer[i], 0x80, sb_size);
64fbf444 290 urb = usb_alloc_urb(CX231XX_ISO_NUM_AUDIO_PACKETS, GFP_ATOMIC);
e0d3bafd 291 if (!urb) {
e0d3bafd
SD		 292 for (j = 0; j < i; j++) {
293 usb_free_urb(dev->adev.urb[j]);
294 kfree(dev->adev.transfer_buffer[j]);
295 }
296 return -ENOMEM;
297 }
298
299 urb->dev = dev->udev;
300 urb->context = dev;
b9255176
SD		 301 urb->pipe = usb_rcvisocpipe(dev->udev,
302 dev->adev.end_point_addr);
cd5534be 303 urb->transfer_flags = URB_ISO_ASAP;
e0d3bafd
SD		 304 urb->transfer_buffer = dev->adev.transfer_buffer[i];
305 urb->interval = 1;
306 urb->complete = cx231xx_audio_isocirq;
64fbf444 307 urb->number_of_packets = CX231XX_ISO_NUM_AUDIO_PACKETS;
e0d3bafd
SD		 308 urb->transfer_buffer_length = sb_size;
309
64fbf444 310 for (j = k = 0; j < CX231XX_ISO_NUM_AUDIO_PACKETS;
b9255176 311 j++, k += dev->adev.max_pkt_size) {
e0d3bafd 312 urb->iso_frame_desc[j].offset = k;
84b5dbf3 313 urb->iso_frame_desc[j].length = dev->adev.max_pkt_size;
e0d3bafd
SD		 314 }
315 dev->adev.urb[i] = urb;
316 }
317
318 for (i = 0; i < CX231XX_AUDIO_BUFS; i++) {
319 errCode = usb_submit_urb(dev->adev.urb[i], GFP_ATOMIC);
320 if (errCode < 0) {
321 cx231xx_isoc_audio_deinit(dev);
322 return errCode;
323 }
324 }
325
326 return errCode;
327}
328
64fbf444
PB		 329static int cx231xx_init_audio_bulk(struct cx231xx *dev)
330{
331 int i, errCode;
332 int sb_size;
333
336fea92 334 dev_dbg(dev->dev,
b7085c08 335 "%s: Starting BULK AUDIO transfers\n", __func__);
64fbf444 336
990862a2
MCC		 337 if (dev->state & DEV_DISCONNECTED)
338 return -ENODEV;
339
64fbf444
PB		 340 sb_size = CX231XX_NUM_AUDIO_PACKETS * dev->adev.max_pkt_size;
341
342 for (i = 0; i < CX231XX_AUDIO_BUFS; i++) {
343 struct urb *urb;
344 int j;
345
346 dev->adev.transfer_buffer[i] = kmalloc(sb_size, GFP_ATOMIC);
347 if (!dev->adev.transfer_buffer[i])
348 return -ENOMEM;
349
350 memset(dev->adev.transfer_buffer[i], 0x80, sb_size);
351 urb = usb_alloc_urb(CX231XX_NUM_AUDIO_PACKETS, GFP_ATOMIC);
352 if (!urb) {
64fbf444
PB		 353 for (j = 0; j < i; j++) {
354 usb_free_urb(dev->adev.urb[j]);
355 kfree(dev->adev.transfer_buffer[j]);
356 }
357 return -ENOMEM;
358 }
359
360 urb->dev = dev->udev;
361 urb->context = dev;
362 urb->pipe = usb_rcvbulkpipe(dev->udev,
363 dev->adev.end_point_addr);
cd5534be 364 urb->transfer_flags = 0;
64fbf444
PB		 365 urb->transfer_buffer = dev->adev.transfer_buffer[i];
366 urb->complete = cx231xx_audio_bulkirq;
367 urb->transfer_buffer_length = sb_size;
368
369 dev->adev.urb[i] = urb;
370
371 }
372
373 for (i = 0; i < CX231XX_AUDIO_BUFS; i++) {
374 errCode = usb_submit_urb(dev->adev.urb[i], GFP_ATOMIC);
375 if (errCode < 0) {
376 cx231xx_bulk_audio_deinit(dev);
377 return errCode;
378 }
379 }
380
381 return errCode;
382}
383
e0d3bafd
SD		 384static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs,
385 size_t size)
386{
387 struct snd_pcm_runtime *runtime = subs->runtime;
56d8a3b0 388 struct cx231xx *dev = snd_pcm_substream_chip(subs);
e0d3bafd 389
336fea92 390 dev_dbg(dev->dev, "Allocating vbuffer\n");
e0d3bafd
SD		 391 if (runtime->dma_area) {
392 if (runtime->dma_bytes > size)
393 return 0;
394
395 vfree(runtime->dma_area);
396 }
397 runtime->dma_area = vmalloc(size);
398 if (!runtime->dma_area)
399 return -ENOMEM;
400
401 runtime->dma_bytes = size;
402
403 return 0;
404}
405
38c4f03a 406static const struct snd_pcm_hardware snd_cx231xx_hw_capture = {
6e6a8b5a
MCC		 407 .info = SNDRV_PCM_INFO_BLOCK_TRANSFER |
408 SNDRV_PCM_INFO_MMAP |
409 SNDRV_PCM_INFO_INTERLEAVED |
6e4f574b 410 SNDRV_PCM_INFO_MMAP_VALID,
e0d3bafd
SD		 411
412 .formats = SNDRV_PCM_FMTBIT_S16_LE,
413
414 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_KNOT,
415
416 .rate_min = 48000,
417 .rate_max = 48000,
418 .channels_min = 2,
419 .channels_max = 2,
420 .buffer_bytes_max = 62720 * 8, /* just about the value in usbaudio.c */
cde4362f 421 .period_bytes_min = 64, /* 12544/2, */
e0d3bafd
SD		 422 .period_bytes_max = 12544,
423 .periods_min = 2,
cde4362f 424 .periods_max = 98, /* 12544, */
e0d3bafd
SD		 425};
426
427static int snd_cx231xx_capture_open(struct snd_pcm_substream *substream)
428{
429 struct cx231xx *dev = snd_pcm_substream_chip(substream);
430 struct snd_pcm_runtime *runtime = substream->runtime;
431 int ret = 0;
432
336fea92 433 dev_dbg(dev->dev,
56d8a3b0 434 "opening device and trying to acquire exclusive lock\n");
e0d3bafd 435
990862a2 436 if (dev->state & DEV_DISCONNECTED) {
336fea92 437 dev_err(dev->dev,
b7085c08 438 "Can't open. the device was removed.\n");
990862a2
MCC		 439 return -ENODEV;
440 }
441
84b5dbf3 442 /* set alternate setting for audio interface */
b9255176 443 /* 1 - 48000 samples per sec */
61b04cb2 444 mutex_lock(&dev->lock);
64fbf444
PB		 445 if (dev->USE_ISO)
446 ret = cx231xx_set_alt_setting(dev, INDEX_AUDIO, 1);
447 else
448 ret = cx231xx_set_alt_setting(dev, INDEX_AUDIO, 0);
61b04cb2 449 mutex_unlock(&dev->lock);
84b5dbf3 450 if (ret < 0) {
336fea92 451 dev_err(dev->dev,
b7085c08 452 "failed to set alternate setting !\n");
e0d3bafd 453
84b5dbf3
MCC		 454 return ret;
455 }
e0d3bafd 456
e0d3bafd
SD		 457 runtime->hw = snd_cx231xx_hw_capture;
458
84b5dbf3 459 mutex_lock(&dev->lock);
61b04cb2
MCC		 460 /* inform hardware to start streaming */
461 ret = cx231xx_capture_start(dev, 1, Audio);
462
e0d3bafd 463 dev->adev.users++;
84b5dbf3 464 mutex_unlock(&dev->lock);
e0d3bafd
SD		 465
466 snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
467 dev->adev.capture_pcm_substream = substream;
468 runtime->private_data = dev;
469
470 return 0;
471}
472
473static int snd_cx231xx_pcm_close(struct snd_pcm_substream *substream)
474{
84b5dbf3 475 int ret;
e0d3bafd
SD		 476 struct cx231xx *dev = snd_pcm_substream_chip(substream);
477
336fea92 478 dev_dbg(dev->dev, "closing device\n");
e0d3bafd 479
61b04cb2
MCC		 480 /* inform hardware to stop streaming */
481 mutex_lock(&dev->lock);
64fbf444
PB		 482 ret = cx231xx_capture_start(dev, 0, Audio);
483
84b5dbf3 484 /* set alternate setting for audio interface */
b9255176
SD		 485 /* 1 - 48000 samples per sec */
486 ret = cx231xx_set_alt_setting(dev, INDEX_AUDIO, 0);
84b5dbf3 487 if (ret < 0) {
336fea92 488 dev_err(dev->dev,
b7085c08 489 "failed to set alternate setting !\n");
e0d3bafd 490
61b04cb2 491 mutex_unlock(&dev->lock);
84b5dbf3
MCC		 492 return ret;
493 }
e0d3bafd 494
84b5dbf3 495 dev->adev.users--;
9dd73448
JBT		 496 if (substream->runtime->dma_area) {
497 dev_dbg(dev->dev, "freeing\n");
498 vfree(substream->runtime->dma_area);
499 substream->runtime->dma_area = NULL;
500 }
e0d3bafd
SD		 501 mutex_unlock(&dev->lock);
502
503 if (dev->adev.users == 0 && dev->adev.shutdown == 1) {
336fea92
MCC		 504 dev_dbg(dev->dev, "audio users: %d\n", dev->adev.users);
505 dev_dbg(dev->dev, "disabling audio stream!\n");
e0d3bafd 506 dev->adev.shutdown = 0;
336fea92 507 dev_dbg(dev->dev, "released lock\n");
61b04cb2
MCC		 508 if (atomic_read(&dev->stream_started) > 0) {
509 atomic_set(&dev->stream_started, 0);
510 schedule_work(&dev->wq_trigger);
511 }
e0d3bafd
SD		 512 }
513 return 0;
514}
515
516static int snd_cx231xx_hw_capture_params(struct snd_pcm_substream *substream,
84b5dbf3 517 struct snd_pcm_hw_params *hw_params)
e0d3bafd 518{
56d8a3b0 519 struct cx231xx *dev = snd_pcm_substream_chip(substream);
e0d3bafd
SD		 520 int ret;
521
336fea92 522 dev_dbg(dev->dev, "Setting capture parameters\n");
e0d3bafd
SD		 523
524 ret = snd_pcm_alloc_vmalloc_buffer(substream,
84b5dbf3 525 params_buffer_bytes(hw_params));
da983503
HV		 526#if 0
527 /* TODO: set up cx231xx audio chip to deliver the correct audio format,
528 current default is 48000hz multiplexed => 96000hz mono
529 which shouldn't matter since analogue TV only supports mono */
530 unsigned int channels, rate, format;
531
e0d3bafd
SD		 532 format = params_format(hw_params);
533 rate = params_rate(hw_params);
534 channels = params_channels(hw_params);
da983503 535#endif
e0d3bafd 536
da983503 537 return ret;
e0d3bafd
SD		 538}
539
540static int snd_cx231xx_hw_capture_free(struct snd_pcm_substream *substream)
541{
542 struct cx231xx *dev = snd_pcm_substream_chip(substream);
543
336fea92 544 dev_dbg(dev->dev, "Stop capture, if needed\n");
e0d3bafd 545
61b04cb2
MCC		 546 if (atomic_read(&dev->stream_started) > 0) {
547 atomic_set(&dev->stream_started, 0);
548 schedule_work(&dev->wq_trigger);
549 }
e0d3bafd
SD		 550
551 return 0;
552}
553
554static int snd_cx231xx_prepare(struct snd_pcm_substream *substream)
555{
64fbf444
PB		 556 struct cx231xx *dev = snd_pcm_substream_chip(substream);
557
558 dev->adev.hwptr_done_capture = 0;
559 dev->adev.capture_transfer_done = 0;
560
e0d3bafd
SD		 561 return 0;
562}
563
61b04cb2
MCC		 564static void audio_trigger(struct work_struct *work)
565{
566 struct cx231xx *dev = container_of(work, struct cx231xx, wq_trigger);
567
568 if (atomic_read(&dev->stream_started)) {
336fea92 569 dev_dbg(dev->dev, "starting capture");
61b04cb2
MCC		 570 if (is_fw_load(dev) == 0)
571 cx25840_call(dev, core, load_fw);
572 if (dev->USE_ISO)
573 cx231xx_init_audio_isoc(dev);
574 else
575 cx231xx_init_audio_bulk(dev);
576 } else {
336fea92 577 dev_dbg(dev->dev, "stopping capture");
61b04cb2
MCC		 578 cx231xx_isoc_audio_deinit(dev);
579 }
580}
581
e0d3bafd 582static int snd_cx231xx_capture_trigger(struct snd_pcm_substream *substream,
84b5dbf3 583 int cmd)
e0d3bafd
SD		 584{
585 struct cx231xx *dev = snd_pcm_substream_chip(substream);
da983503 586 int retval = 0;
e0d3bafd 587
990862a2
MCC		 588 if (dev->state & DEV_DISCONNECTED)
589 return -ENODEV;
590
84b5dbf3 591 spin_lock(&dev->adev.slock);
e0d3bafd
SD		 592 switch (cmd) {
593 case SNDRV_PCM_TRIGGER_START:
61b04cb2 594 atomic_set(&dev->stream_started, 1);
e0d3bafd
SD		 595 break;
596 case SNDRV_PCM_TRIGGER_STOP:
61b04cb2 597 atomic_set(&dev->stream_started, 0);
84b5dbf3 598 break;
e0d3bafd
SD		 599 default:
600 retval = -EINVAL;
da983503 601 break;
e0d3bafd 602 }
84b5dbf3 603 spin_unlock(&dev->adev.slock);
61b04cb2
MCC		 604
605 schedule_work(&dev->wq_trigger);
606
da983503 607 return retval;
e0d3bafd
SD		 608}
609
610static snd_pcm_uframes_t snd_cx231xx_capture_pointer(struct snd_pcm_substream
84b5dbf3 611 *substream)
e0d3bafd
SD		 612{
613 struct cx231xx *dev;
84b5dbf3 614 unsigned long flags;
e0d3bafd
SD		 615 snd_pcm_uframes_t hwptr_done;
616
617 dev = snd_pcm_substream_chip(substream);
618
84b5dbf3 619 spin_lock_irqsave(&dev->adev.slock, flags);
e0d3bafd 620 hwptr_done = dev->adev.hwptr_done_capture;
84b5dbf3 621 spin_unlock_irqrestore(&dev->adev.slock, flags);
e0d3bafd
SD		 622
623 return hwptr_done;
624}
625
626static struct page *snd_pcm_get_vmalloc_page(struct snd_pcm_substream *subs,
627 unsigned long offset)
628{
629 void *pageptr = subs->runtime->dma_area + offset;
630
631 return vmalloc_to_page(pageptr);
632}
633
22511cfa 634static const struct snd_pcm_ops snd_cx231xx_pcm_capture = {
84b5dbf3
MCC		 635 .open = snd_cx231xx_capture_open,
636 .close = snd_cx231xx_pcm_close,
637 .ioctl = snd_pcm_lib_ioctl,
e0d3bafd 638 .hw_params = snd_cx231xx_hw_capture_params,
84b5dbf3
MCC		 639 .hw_free = snd_cx231xx_hw_capture_free,
640 .prepare = snd_cx231xx_prepare,
641 .trigger = snd_cx231xx_capture_trigger,
642 .pointer = snd_cx231xx_capture_pointer,
643 .page = snd_pcm_get_vmalloc_page,
e0d3bafd
SD		 644};
645
646static int cx231xx_audio_init(struct cx231xx *dev)
647{
648 struct cx231xx_audio *adev = &dev->adev;
84b5dbf3
MCC		 649 struct snd_pcm *pcm;
650 struct snd_card *card;
651 static int devnr;
652 int err;
653 struct usb_interface *uif;
654 int i, isoc_pipe = 0;
e0d3bafd
SD		 655
656 if (dev->has_alsa_audio != 1) {
657 /* This device does not support the extension (in this case
658 the device is expecting the snd-usb-audio module or
659 doesn't have analog audio support at all) */
660 return 0;
661 }
662
336fea92 663 dev_dbg(dev->dev,
b7085c08 664 "probing for cx231xx non standard usbaudio\n");
e0d3bafd 665
336fea92 666 err = snd_card_new(dev->dev, index[devnr], "Cx231xx Audio",
e7356888 667 THIS_MODULE, 0, &card);
a938b8c5
MCC		 668 if (err < 0)
669 return err;
e0d3bafd
SD		 670
671 spin_lock_init(&adev->slock);
672 err = snd_pcm_new(card, "Cx231xx Audio", 0, 0, 1, &pcm);
fff1abc4
JH		 673 if (err < 0)
674 goto err_free_card;
e0d3bafd 675
84b5dbf3
MCC		 676 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
677 &snd_cx231xx_pcm_capture);
e0d3bafd
SD		 678 pcm->info_flags = 0;
679 pcm->private_data = dev;
680 strcpy(pcm->name, "Conexant cx231xx Capture");
935539c9 681 strcpy(card->driver, "Cx231xx-Audio");
e0d3bafd
SD		 682 strcpy(card->shortname, "Cx231xx Audio");
683 strcpy(card->longname, "Conexant cx231xx Audio");
684
61b04cb2
MCC		 685 INIT_WORK(&dev->wq_trigger, audio_trigger);
686
e0d3bafd 687 err = snd_card_register(card);
fff1abc4
JH		 688 if (err < 0)
689 goto err_free_card;
690
e0d3bafd
SD		 691 adev->sndcard = card;
692 adev->udev = dev->udev;
693
84b5dbf3
MCC		 694 /* compute alternate max packet sizes for Audio */
695 uif =
696 dev->udev->actconfig->interface[dev->current_pcb_config.
697 hs_config_info[0].interface_info.
698 audio_index + 1];
e0d3bafd 699
65f92164
JH		 700 if (uif->altsetting[0].desc.bNumEndpoints < isoc_pipe + 1) {
701 err = -ENODEV;
702 goto err_free_card;
703 }
704
84b5dbf3 705 adev->end_point_addr =
69a11a32
HV		 706 uif->altsetting[0].endpoint[isoc_pipe].desc.
707 bEndpointAddress;
e0d3bafd 708
84b5dbf3 709 adev->num_alt = uif->num_altsetting;
336fea92 710 dev_info(dev->dev,
b7085c08 711 "audio EndPoint Addr 0x%x, Alternate settings: %i\n",
ed0e3729 712 adev->end_point_addr, adev->num_alt);
6da2ec56 713 adev->alt_max_pkt_size = kmalloc_array(32, adev->num_alt, GFP_KERNEL);
fff1abc4
JH		 714 if (!adev->alt_max_pkt_size) {
715 err = -ENOMEM;
716 goto err_free_card;
717 }
e0d3bafd 718
84b5dbf3 719 for (i = 0; i < adev->num_alt; i++) {
65f92164
JH		 720 u16 tmp;
721
722 if (uif->altsetting[i].desc.bNumEndpoints < isoc_pipe + 1) {
723 err = -ENODEV;
724 goto err_free_pkt_size;
725 }
726
727 tmp = le16_to_cpu(uif->altsetting[i].endpoint[isoc_pipe].desc.
84b5dbf3
MCC		 728 wMaxPacketSize);
729 adev->alt_max_pkt_size[i] =
730 (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
336fea92 731 dev_dbg(dev->dev,
b7085c08
MCC		 732 "audio alternate setting %i, max size= %i\n", i,
733 adev->alt_max_pkt_size[i]);
84b5dbf3 734 }
e0d3bafd
SD		 735
736 return 0;
fff1abc4 737
65f92164
JH		 738err_free_pkt_size:
739 kfree(adev->alt_max_pkt_size);
fff1abc4
JH		 740err_free_card:
741 snd_card_free(card);
742
743 return err;
e0d3bafd
SD		 744}
745
746static int cx231xx_audio_fini(struct cx231xx *dev)
747{
748 if (dev == NULL)
749 return 0;
750
751 if (dev->has_alsa_audio != 1) {
752 /* This device does not support the extension (in this case
753 the device is expecting the snd-usb-audio module or
754 doesn't have analog audio support at all) */
755 return 0;
756 }
757
758 if (dev->adev.sndcard) {
759 snd_card_free(dev->adev.sndcard);
84b5dbf3 760 kfree(dev->adev.alt_max_pkt_size);
e0d3bafd
SD		 761 dev->adev.sndcard = NULL;
762 }
763
764 return 0;
765}
766
767static struct cx231xx_ops audio_ops = {
84b5dbf3 768 .id = CX231XX_AUDIO,
e0d3bafd
SD		 769 .name = "Cx231xx Audio Extension",
770 .init = cx231xx_audio_init,
771 .fini = cx231xx_audio_fini,
772};
773
774static int __init cx231xx_alsa_register(void)
775{
776 return cx231xx_register_extension(&audio_ops);
777}
778
779static void __exit cx231xx_alsa_unregister(void)
780{
781 cx231xx_unregister_extension(&audio_ops);
782}
783
784MODULE_LICENSE("GPL");
785MODULE_AUTHOR("Srinivasa Deevi <srinivasa.deevi@conexant.com>");
786MODULE_DESCRIPTION("Cx231xx Audio driver");
787
788module_init(cx231xx_alsa_register);
789module_exit(cx231xx_alsa_unregister);
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