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Merge tag 'drm-intel-next-2016-02-14' of git://anongit.freedesktop.org/drm-intel...
[deliverable/linux.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.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 */
22
589dadf2 23#include "cx231xx.h"
e0d3bafd 24#include <linux/kernel.h>
e0d3bafd
SD		 25#include <linux/init.h>
26#include <linux/sound.h>
27#include <linux/spinlock.h>
28#include <linux/soundcard.h>
29#include <linux/slab.h>
30#include <linux/vmalloc.h>
31#include <linux/proc_fs.h>
32#include <linux/module.h>
33#include <sound/core.h>
34#include <sound/pcm.h>
35#include <sound/pcm_params.h>
36#include <sound/info.h>
37#include <sound/initval.h>
38#include <sound/control.h>
39#include <media/v4l2-common.h>
e0d3bafd
SD		 40
41static int debug;
42module_param(debug, int, 0644);
43MODULE_PARM_DESC(debug, "activates debug info");
44
e0d3bafd
SD		 45static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
46
47static int cx231xx_isoc_audio_deinit(struct cx231xx *dev)
48{
49 int i;
50
336fea92 51 dev_dbg(dev->dev, "Stopping isoc\n");
e0d3bafd 52
e0d3bafd 53 for (i = 0; i < CX231XX_AUDIO_BUFS; i++) {
84b5dbf3
MCC		 54 if (dev->adev.urb[i]) {
55 if (!irqs_disabled())
56 usb_kill_urb(dev->adev.urb[i]);
57 else
58 usb_unlink_urb(dev->adev.urb[i]);
e0d3bafd 59
84b5dbf3
MCC		 60 usb_free_urb(dev->adev.urb[i]);
61 dev->adev.urb[i] = NULL;
e0d3bafd 62
84b5dbf3
MCC		 63 kfree(dev->adev.transfer_buffer[i]);
64 dev->adev.transfer_buffer[i] = NULL;
84b5dbf3 65 }
e0d3bafd
SD		 66 }
67
68 return 0;
69}
70
64fbf444
PB		 71static int cx231xx_bulk_audio_deinit(struct cx231xx *dev)
72{
73 int i;
74
336fea92 75 dev_dbg(dev->dev, "Stopping bulk\n");
64fbf444
PB		 76
77 for (i = 0; i < CX231XX_AUDIO_BUFS; i++) {
78 if (dev->adev.urb[i]) {
79 if (!irqs_disabled())
80 usb_kill_urb(dev->adev.urb[i]);
81 else
82 usb_unlink_urb(dev->adev.urb[i]);
83
84 usb_free_urb(dev->adev.urb[i]);
85 dev->adev.urb[i] = NULL;
86
87 kfree(dev->adev.transfer_buffer[i]);
88 dev->adev.transfer_buffer[i] = NULL;
89 }
90 }
91
92 return 0;
93}
94
e0d3bafd
SD		 95static void cx231xx_audio_isocirq(struct urb *urb)
96{
84b5dbf3
MCC		 97 struct cx231xx *dev = urb->context;
98 int i;
99 unsigned int oldptr;
100 int period_elapsed = 0;
101 int status;
102 unsigned char *cp;
103 unsigned int stride;
e0d3bafd 104 struct snd_pcm_substream *substream;
84b5dbf3
MCC		 105 struct snd_pcm_runtime *runtime;
106
990862a2
MCC		 107 if (dev->state & DEV_DISCONNECTED)
108 return;
109
84b5dbf3
MCC		 110 switch (urb->status) {
111 case 0: /* success */
112 case -ETIMEDOUT: /* NAK */
113 break;
114 case -ECONNRESET: /* kill */
115 case -ENOENT:
116 case -ESHUTDOWN:
117 return;
118 default: /* error */
336fea92 119 dev_dbg(dev->dev, "urb completition error %d.\n",
56d8a3b0 120 urb->status);
84b5dbf3 121 break;
e0d3bafd
SD		 122 }
123
61b04cb2
MCC		 124 if (atomic_read(&dev->stream_started) == 0)
125 return;
126
e0d3bafd
SD		 127 if (dev->adev.capture_pcm_substream) {
128 substream = dev->adev.capture_pcm_substream;
129 runtime = substream->runtime;
130 stride = runtime->frame_bits >> 3;
131
132 for (i = 0; i < urb->number_of_packets; i++) {
cde4362f
MCC		 133 int length = urb->iso_frame_desc[i].actual_length /
134 stride;
e0d3bafd 135 cp = (unsigned char *)urb->transfer_buffer +
cde4362f 136 urb->iso_frame_desc[i].offset;
e0d3bafd
SD		 137
138 if (!length)
139 continue;
140
141 oldptr = dev->adev.hwptr_done_capture;
142 if (oldptr + length >= runtime->buffer_size) {
cde4362f
MCC		 143 unsigned int cnt;
144
145 cnt = runtime->buffer_size - oldptr;
e0d3bafd
SD		 146 memcpy(runtime->dma_area + oldptr * stride, cp,
147 cnt * stride);
148 memcpy(runtime->dma_area, cp + cnt * stride,
149 length * stride - cnt * stride);
150 } else {
151 memcpy(runtime->dma_area + oldptr * stride, cp,
152 length * stride);
153 }
154
155 snd_pcm_stream_lock(substream);
156
157 dev->adev.hwptr_done_capture += length;
b9255176
SD		 158 if (dev->adev.hwptr_done_capture >=
159 runtime->buffer_size)
160 dev->adev.hwptr_done_capture -=
161 runtime->buffer_size;
e0d3bafd
SD		 162
163 dev->adev.capture_transfer_done += length;
b9255176
SD		 164 if (dev->adev.capture_transfer_done >=
165 runtime->period_size) {
166 dev->adev.capture_transfer_done -=
167 runtime->period_size;
e0d3bafd
SD		 168 period_elapsed = 1;
169 }
e0d3bafd
SD		 170 snd_pcm_stream_unlock(substream);
171 }
172 if (period_elapsed)
173 snd_pcm_period_elapsed(substream);
174 }
175 urb->status = 0;
176
177 status = usb_submit_urb(urb, GFP_ATOMIC);
178 if (status < 0) {
336fea92 179 dev_err(dev->dev,
b7085c08
MCC		 180 "resubmit of audio urb failed (error=%i)\n",
181 status);
e0d3bafd
SD		 182 }
183 return;
184}
185
64fbf444
PB		 186static void cx231xx_audio_bulkirq(struct urb *urb)
187{
188 struct cx231xx *dev = urb->context;
189 unsigned int oldptr;
190 int period_elapsed = 0;
191 int status;
192 unsigned char *cp;
193 unsigned int stride;
194 struct snd_pcm_substream *substream;
195 struct snd_pcm_runtime *runtime;
196
990862a2
MCC		 197 if (dev->state & DEV_DISCONNECTED)
198 return;
199
64fbf444
PB		 200 switch (urb->status) {
201 case 0: /* success */
202 case -ETIMEDOUT: /* NAK */
203 break;
204 case -ECONNRESET: /* kill */
205 case -ENOENT:
206 case -ESHUTDOWN:
207 return;
208 default: /* error */
336fea92 209 dev_dbg(dev->dev, "urb completition error %d.\n",
56d8a3b0 210 urb->status);
64fbf444
PB		 211 break;
212 }
213
61b04cb2
MCC		 214 if (atomic_read(&dev->stream_started) == 0)
215 return;
216
64fbf444
PB		 217 if (dev->adev.capture_pcm_substream) {
218 substream = dev->adev.capture_pcm_substream;
219 runtime = substream->runtime;
220 stride = runtime->frame_bits >> 3;
221
222 if (1) {
223 int length = urb->actual_length /
224 stride;
225 cp = (unsigned char *)urb->transfer_buffer;
226
227 oldptr = dev->adev.hwptr_done_capture;
228 if (oldptr + length >= runtime->buffer_size) {
229 unsigned int cnt;
230
231 cnt = runtime->buffer_size - oldptr;
232 memcpy(runtime->dma_area + oldptr * stride, cp,
233 cnt * stride);
234 memcpy(runtime->dma_area, cp + cnt * stride,
235 length * stride - cnt * stride);
236 } else {
237 memcpy(runtime->dma_area + oldptr * stride, cp,
238 length * stride);
239 }
240
241 snd_pcm_stream_lock(substream);
242
243 dev->adev.hwptr_done_capture += length;
244 if (dev->adev.hwptr_done_capture >=
245 runtime->buffer_size)
246 dev->adev.hwptr_done_capture -=
247 runtime->buffer_size;
248
249 dev->adev.capture_transfer_done += length;
250 if (dev->adev.capture_transfer_done >=
251 runtime->period_size) {
252 dev->adev.capture_transfer_done -=
253 runtime->period_size;
254 period_elapsed = 1;
255 }
256 snd_pcm_stream_unlock(substream);
257 }
258 if (period_elapsed)
259 snd_pcm_period_elapsed(substream);
260 }
261 urb->status = 0;
262
263 status = usb_submit_urb(urb, GFP_ATOMIC);
264 if (status < 0) {
336fea92 265 dev_err(dev->dev,
b7085c08
MCC		 266 "resubmit of audio urb failed (error=%i)\n",
267 status);
64fbf444
PB		 268 }
269 return;
270}
271
e0d3bafd
SD		 272static int cx231xx_init_audio_isoc(struct cx231xx *dev)
273{
84b5dbf3
MCC		 274 int i, errCode;
275 int sb_size;
e0d3bafd 276
336fea92 277 dev_dbg(dev->dev,
b7085c08 278 "%s: Starting ISO AUDIO transfers\n", __func__);
e0d3bafd 279
990862a2
MCC		 280 if (dev->state & DEV_DISCONNECTED)
281 return -ENODEV;
282
64fbf444 283 sb_size = CX231XX_ISO_NUM_AUDIO_PACKETS * dev->adev.max_pkt_size;
e0d3bafd
SD		 284
285 for (i = 0; i < CX231XX_AUDIO_BUFS; i++) {
286 struct urb *urb;
287 int j, k;
288
289 dev->adev.transfer_buffer[i] = kmalloc(sb_size, GFP_ATOMIC);
290 if (!dev->adev.transfer_buffer[i])
291 return -ENOMEM;
292
293 memset(dev->adev.transfer_buffer[i], 0x80, sb_size);
64fbf444 294 urb = usb_alloc_urb(CX231XX_ISO_NUM_AUDIO_PACKETS, GFP_ATOMIC);
e0d3bafd 295 if (!urb) {
336fea92 296 dev_err(dev->dev, "usb_alloc_urb failed!\n");
e0d3bafd
SD		 297 for (j = 0; j < i; j++) {
298 usb_free_urb(dev->adev.urb[j]);
299 kfree(dev->adev.transfer_buffer[j]);
300 }
301 return -ENOMEM;
302 }
303
304 urb->dev = dev->udev;
305 urb->context = dev;
b9255176
SD		 306 urb->pipe = usb_rcvisocpipe(dev->udev,
307 dev->adev.end_point_addr);
cd5534be 308 urb->transfer_flags = URB_ISO_ASAP;
e0d3bafd
SD		 309 urb->transfer_buffer = dev->adev.transfer_buffer[i];
310 urb->interval = 1;
311 urb->complete = cx231xx_audio_isocirq;
64fbf444 312 urb->number_of_packets = CX231XX_ISO_NUM_AUDIO_PACKETS;
e0d3bafd
SD		 313 urb->transfer_buffer_length = sb_size;
314
64fbf444 315 for (j = k = 0; j < CX231XX_ISO_NUM_AUDIO_PACKETS;
b9255176 316 j++, k += dev->adev.max_pkt_size) {
e0d3bafd 317 urb->iso_frame_desc[j].offset = k;
84b5dbf3 318 urb->iso_frame_desc[j].length = dev->adev.max_pkt_size;
e0d3bafd
SD		 319 }
320 dev->adev.urb[i] = urb;
321 }
322
323 for (i = 0; i < CX231XX_AUDIO_BUFS; i++) {
324 errCode = usb_submit_urb(dev->adev.urb[i], GFP_ATOMIC);
325 if (errCode < 0) {
326 cx231xx_isoc_audio_deinit(dev);
327 return errCode;
328 }
329 }
330
331 return errCode;
332}
333
64fbf444
PB		 334static int cx231xx_init_audio_bulk(struct cx231xx *dev)
335{
336 int i, errCode;
337 int sb_size;
338
336fea92 339 dev_dbg(dev->dev,
b7085c08 340 "%s: Starting BULK AUDIO transfers\n", __func__);
64fbf444 341
990862a2
MCC		 342 if (dev->state & DEV_DISCONNECTED)
343 return -ENODEV;
344
64fbf444
PB		 345 sb_size = CX231XX_NUM_AUDIO_PACKETS * dev->adev.max_pkt_size;
346
347 for (i = 0; i < CX231XX_AUDIO_BUFS; i++) {
348 struct urb *urb;
349 int j;
350
351 dev->adev.transfer_buffer[i] = kmalloc(sb_size, GFP_ATOMIC);
352 if (!dev->adev.transfer_buffer[i])
353 return -ENOMEM;
354
355 memset(dev->adev.transfer_buffer[i], 0x80, sb_size);
356 urb = usb_alloc_urb(CX231XX_NUM_AUDIO_PACKETS, GFP_ATOMIC);
357 if (!urb) {
336fea92 358 dev_err(dev->dev, "usb_alloc_urb failed!\n");
64fbf444
PB		 359 for (j = 0; j < i; j++) {
360 usb_free_urb(dev->adev.urb[j]);
361 kfree(dev->adev.transfer_buffer[j]);
362 }
363 return -ENOMEM;
364 }
365
366 urb->dev = dev->udev;
367 urb->context = dev;
368 urb->pipe = usb_rcvbulkpipe(dev->udev,
369 dev->adev.end_point_addr);
cd5534be 370 urb->transfer_flags = 0;
64fbf444
PB		 371 urb->transfer_buffer = dev->adev.transfer_buffer[i];
372 urb->complete = cx231xx_audio_bulkirq;
373 urb->transfer_buffer_length = sb_size;
374
375 dev->adev.urb[i] = urb;
376
377 }
378
379 for (i = 0; i < CX231XX_AUDIO_BUFS; i++) {
380 errCode = usb_submit_urb(dev->adev.urb[i], GFP_ATOMIC);
381 if (errCode < 0) {
382 cx231xx_bulk_audio_deinit(dev);
383 return errCode;
384 }
385 }
386
387 return errCode;
388}
389
e0d3bafd
SD		 390static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs,
391 size_t size)
392{
393 struct snd_pcm_runtime *runtime = subs->runtime;
56d8a3b0 394 struct cx231xx *dev = snd_pcm_substream_chip(subs);
e0d3bafd 395
336fea92 396 dev_dbg(dev->dev, "Allocating vbuffer\n");
e0d3bafd
SD		 397 if (runtime->dma_area) {
398 if (runtime->dma_bytes > size)
399 return 0;
400
401 vfree(runtime->dma_area);
402 }
403 runtime->dma_area = vmalloc(size);
404 if (!runtime->dma_area)
405 return -ENOMEM;
406
407 runtime->dma_bytes = size;
408
409 return 0;
410}
411
412static struct snd_pcm_hardware snd_cx231xx_hw_capture = {
6e4f574b
SD		 413 .info = SNDRV_PCM_INFO_BLOCK_TRANSFER |
414 SNDRV_PCM_INFO_MMAP |
415 SNDRV_PCM_INFO_INTERLEAVED |
416 SNDRV_PCM_INFO_MMAP_VALID,
e0d3bafd
SD		 417
418 .formats = SNDRV_PCM_FMTBIT_S16_LE,
419
420 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_KNOT,
421
422 .rate_min = 48000,
423 .rate_max = 48000,
424 .channels_min = 2,
425 .channels_max = 2,
426 .buffer_bytes_max = 62720 * 8, /* just about the value in usbaudio.c */
cde4362f 427 .period_bytes_min = 64, /* 12544/2, */
e0d3bafd
SD		 428 .period_bytes_max = 12544,
429 .periods_min = 2,
cde4362f 430 .periods_max = 98, /* 12544, */
e0d3bafd
SD		 431};
432
433static int snd_cx231xx_capture_open(struct snd_pcm_substream *substream)
434{
435 struct cx231xx *dev = snd_pcm_substream_chip(substream);
436 struct snd_pcm_runtime *runtime = substream->runtime;
437 int ret = 0;
438
336fea92 439 dev_dbg(dev->dev,
56d8a3b0 440 "opening device and trying to acquire exclusive lock\n");
e0d3bafd 441
990862a2 442 if (dev->state & DEV_DISCONNECTED) {
336fea92 443 dev_err(dev->dev,
b7085c08 444 "Can't open. the device was removed.\n");
990862a2
MCC		 445 return -ENODEV;
446 }
447
84b5dbf3 448 /* set alternate setting for audio interface */
b9255176 449 /* 1 - 48000 samples per sec */
61b04cb2 450 mutex_lock(&dev->lock);
64fbf444
PB		 451 if (dev->USE_ISO)
452 ret = cx231xx_set_alt_setting(dev, INDEX_AUDIO, 1);
453 else
454 ret = cx231xx_set_alt_setting(dev, INDEX_AUDIO, 0);
61b04cb2 455 mutex_unlock(&dev->lock);
84b5dbf3 456 if (ret < 0) {
336fea92 457 dev_err(dev->dev,
b7085c08 458 "failed to set alternate setting !\n");
e0d3bafd 459
84b5dbf3
MCC		 460 return ret;
461 }
e0d3bafd 462
e0d3bafd
SD		 463 runtime->hw = snd_cx231xx_hw_capture;
464
84b5dbf3 465 mutex_lock(&dev->lock);
61b04cb2
MCC		 466 /* inform hardware to start streaming */
467 ret = cx231xx_capture_start(dev, 1, Audio);
468
e0d3bafd 469 dev->adev.users++;
84b5dbf3 470 mutex_unlock(&dev->lock);
e0d3bafd
SD		 471
472 snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
473 dev->adev.capture_pcm_substream = substream;
474 runtime->private_data = dev;
475
476 return 0;
477}
478
479static int snd_cx231xx_pcm_close(struct snd_pcm_substream *substream)
480{
84b5dbf3 481 int ret;
e0d3bafd
SD		 482 struct cx231xx *dev = snd_pcm_substream_chip(substream);
483
336fea92 484 dev_dbg(dev->dev, "closing device\n");
e0d3bafd 485
61b04cb2
MCC		 486 /* inform hardware to stop streaming */
487 mutex_lock(&dev->lock);
64fbf444
PB		 488 ret = cx231xx_capture_start(dev, 0, Audio);
489
84b5dbf3 490 /* set alternate setting for audio interface */
b9255176
SD		 491 /* 1 - 48000 samples per sec */
492 ret = cx231xx_set_alt_setting(dev, INDEX_AUDIO, 0);
84b5dbf3 493 if (ret < 0) {
336fea92 494 dev_err(dev->dev,
b7085c08 495 "failed to set alternate setting !\n");
e0d3bafd 496
61b04cb2 497 mutex_unlock(&dev->lock);
84b5dbf3
MCC		 498 return ret;
499 }
e0d3bafd 500
84b5dbf3 501 dev->adev.users--;
9dd73448
JBT		 502 if (substream->runtime->dma_area) {
503 dev_dbg(dev->dev, "freeing\n");
504 vfree(substream->runtime->dma_area);
505 substream->runtime->dma_area = NULL;
506 }
e0d3bafd
SD		 507 mutex_unlock(&dev->lock);
508
509 if (dev->adev.users == 0 && dev->adev.shutdown == 1) {
336fea92
MCC		 510 dev_dbg(dev->dev, "audio users: %d\n", dev->adev.users);
511 dev_dbg(dev->dev, "disabling audio stream!\n");
e0d3bafd 512 dev->adev.shutdown = 0;
336fea92 513 dev_dbg(dev->dev, "released lock\n");
61b04cb2
MCC		 514 if (atomic_read(&dev->stream_started) > 0) {
515 atomic_set(&dev->stream_started, 0);
516 schedule_work(&dev->wq_trigger);
517 }
e0d3bafd
SD		 518 }
519 return 0;
520}
521
522static int snd_cx231xx_hw_capture_params(struct snd_pcm_substream *substream,
84b5dbf3 523 struct snd_pcm_hw_params *hw_params)
e0d3bafd 524{
56d8a3b0 525 struct cx231xx *dev = snd_pcm_substream_chip(substream);
e0d3bafd
SD		 526 int ret;
527
336fea92 528 dev_dbg(dev->dev, "Setting capture parameters\n");
e0d3bafd
SD		 529
530 ret = snd_pcm_alloc_vmalloc_buffer(substream,
84b5dbf3 531 params_buffer_bytes(hw_params));
da983503
HV		 532#if 0
533 /* TODO: set up cx231xx audio chip to deliver the correct audio format,
534 current default is 48000hz multiplexed => 96000hz mono
535 which shouldn't matter since analogue TV only supports mono */
536 unsigned int channels, rate, format;
537
e0d3bafd
SD		 538 format = params_format(hw_params);
539 rate = params_rate(hw_params);
540 channels = params_channels(hw_params);
da983503 541#endif
e0d3bafd 542
da983503 543 return ret;
e0d3bafd
SD		 544}
545
546static int snd_cx231xx_hw_capture_free(struct snd_pcm_substream *substream)
547{
548 struct cx231xx *dev = snd_pcm_substream_chip(substream);
549
336fea92 550 dev_dbg(dev->dev, "Stop capture, if needed\n");
e0d3bafd 551
61b04cb2
MCC		 552 if (atomic_read(&dev->stream_started) > 0) {
553 atomic_set(&dev->stream_started, 0);
554 schedule_work(&dev->wq_trigger);
555 }
e0d3bafd
SD		 556
557 return 0;
558}
559
560static int snd_cx231xx_prepare(struct snd_pcm_substream *substream)
561{
64fbf444
PB		 562 struct cx231xx *dev = snd_pcm_substream_chip(substream);
563
564 dev->adev.hwptr_done_capture = 0;
565 dev->adev.capture_transfer_done = 0;
566
e0d3bafd
SD		 567 return 0;
568}
569
61b04cb2
MCC		 570static void audio_trigger(struct work_struct *work)
571{
572 struct cx231xx *dev = container_of(work, struct cx231xx, wq_trigger);
573
574 if (atomic_read(&dev->stream_started)) {
336fea92 575 dev_dbg(dev->dev, "starting capture");
61b04cb2
MCC		 576 if (is_fw_load(dev) == 0)
577 cx25840_call(dev, core, load_fw);
578 if (dev->USE_ISO)
579 cx231xx_init_audio_isoc(dev);
580 else
581 cx231xx_init_audio_bulk(dev);
582 } else {
336fea92 583 dev_dbg(dev->dev, "stopping capture");
61b04cb2
MCC		 584 cx231xx_isoc_audio_deinit(dev);
585 }
586}
587
e0d3bafd 588static int snd_cx231xx_capture_trigger(struct snd_pcm_substream *substream,
84b5dbf3 589 int cmd)
e0d3bafd
SD		 590{
591 struct cx231xx *dev = snd_pcm_substream_chip(substream);
da983503 592 int retval = 0;
e0d3bafd 593
990862a2
MCC		 594 if (dev->state & DEV_DISCONNECTED)
595 return -ENODEV;
596
84b5dbf3 597 spin_lock(&dev->adev.slock);
e0d3bafd
SD		 598 switch (cmd) {
599 case SNDRV_PCM_TRIGGER_START:
61b04cb2 600 atomic_set(&dev->stream_started, 1);
e0d3bafd
SD		 601 break;
602 case SNDRV_PCM_TRIGGER_STOP:
61b04cb2 603 atomic_set(&dev->stream_started, 0);
84b5dbf3 604 break;
e0d3bafd
SD		 605 default:
606 retval = -EINVAL;
da983503 607 break;
e0d3bafd 608 }
84b5dbf3 609 spin_unlock(&dev->adev.slock);
61b04cb2
MCC		 610
611 schedule_work(&dev->wq_trigger);
612
da983503 613 return retval;
e0d3bafd
SD		 614}
615
616static snd_pcm_uframes_t snd_cx231xx_capture_pointer(struct snd_pcm_substream
84b5dbf3 617 *substream)
e0d3bafd
SD		 618{
619 struct cx231xx *dev;
84b5dbf3 620 unsigned long flags;
e0d3bafd
SD		 621 snd_pcm_uframes_t hwptr_done;
622
623 dev = snd_pcm_substream_chip(substream);
624
84b5dbf3 625 spin_lock_irqsave(&dev->adev.slock, flags);
e0d3bafd 626 hwptr_done = dev->adev.hwptr_done_capture;
84b5dbf3 627 spin_unlock_irqrestore(&dev->adev.slock, flags);
e0d3bafd
SD		 628
629 return hwptr_done;
630}
631
632static struct page *snd_pcm_get_vmalloc_page(struct snd_pcm_substream *subs,
633 unsigned long offset)
634{
635 void *pageptr = subs->runtime->dma_area + offset;
636
637 return vmalloc_to_page(pageptr);
638}
639
640static struct snd_pcm_ops snd_cx231xx_pcm_capture = {
84b5dbf3
MCC		 641 .open = snd_cx231xx_capture_open,
642 .close = snd_cx231xx_pcm_close,
643 .ioctl = snd_pcm_lib_ioctl,
e0d3bafd 644 .hw_params = snd_cx231xx_hw_capture_params,
84b5dbf3
MCC		 645 .hw_free = snd_cx231xx_hw_capture_free,
646 .prepare = snd_cx231xx_prepare,
647 .trigger = snd_cx231xx_capture_trigger,
648 .pointer = snd_cx231xx_capture_pointer,
649 .page = snd_pcm_get_vmalloc_page,
e0d3bafd
SD		 650};
651
652static int cx231xx_audio_init(struct cx231xx *dev)
653{
654 struct cx231xx_audio *adev = &dev->adev;
84b5dbf3
MCC		 655 struct snd_pcm *pcm;
656 struct snd_card *card;
657 static int devnr;
658 int err;
659 struct usb_interface *uif;
660 int i, isoc_pipe = 0;
e0d3bafd
SD		 661
662 if (dev->has_alsa_audio != 1) {
663 /* This device does not support the extension (in this case
664 the device is expecting the snd-usb-audio module or
665 doesn't have analog audio support at all) */
666 return 0;
667 }
668
336fea92 669 dev_dbg(dev->dev,
b7085c08 670 "probing for cx231xx non standard usbaudio\n");
e0d3bafd 671
336fea92 672 err = snd_card_new(dev->dev, index[devnr], "Cx231xx Audio",
e7356888 673 THIS_MODULE, 0, &card);
a938b8c5
MCC		 674 if (err < 0)
675 return err;
e0d3bafd
SD		 676
677 spin_lock_init(&adev->slock);
678 err = snd_pcm_new(card, "Cx231xx Audio", 0, 0, 1, &pcm);
679 if (err < 0) {
680 snd_card_free(card);
681 return err;
682 }
683
84b5dbf3
MCC		 684 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
685 &snd_cx231xx_pcm_capture);
e0d3bafd
SD		 686 pcm->info_flags = 0;
687 pcm->private_data = dev;
688 strcpy(pcm->name, "Conexant cx231xx Capture");
935539c9 689 strcpy(card->driver, "Cx231xx-Audio");
e0d3bafd
SD		 690 strcpy(card->shortname, "Cx231xx Audio");
691 strcpy(card->longname, "Conexant cx231xx Audio");
692
61b04cb2
MCC		 693 INIT_WORK(&dev->wq_trigger, audio_trigger);
694
e0d3bafd
SD		 695 err = snd_card_register(card);
696 if (err < 0) {
697 snd_card_free(card);
698 return err;
699 }
700 adev->sndcard = card;
701 adev->udev = dev->udev;
702
84b5dbf3
MCC		 703 /* compute alternate max packet sizes for Audio */
704 uif =
705 dev->udev->actconfig->interface[dev->current_pcb_config.
706 hs_config_info[0].interface_info.
707 audio_index + 1];
e0d3bafd 708
84b5dbf3 709 adev->end_point_addr =
69a11a32
HV		 710 uif->altsetting[0].endpoint[isoc_pipe].desc.
711 bEndpointAddress;
e0d3bafd 712
84b5dbf3 713 adev->num_alt = uif->num_altsetting;
336fea92 714 dev_info(dev->dev,
b7085c08 715 "audio EndPoint Addr 0x%x, Alternate settings: %i\n",
ed0e3729 716 adev->end_point_addr, adev->num_alt);
84b5dbf3 717 adev->alt_max_pkt_size = kmalloc(32 * adev->num_alt, GFP_KERNEL);
e0d3bafd 718
ed0e3729 719 if (adev->alt_max_pkt_size == NULL)
84b5dbf3 720 return -ENOMEM;
e0d3bafd 721
84b5dbf3
MCC		 722 for (i = 0; i < adev->num_alt; i++) {
723 u16 tmp =
724 le16_to_cpu(uif->altsetting[i].endpoint[isoc_pipe].desc.
725 wMaxPacketSize);
726 adev->alt_max_pkt_size[i] =
727 (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
336fea92 728 dev_dbg(dev->dev,
b7085c08
MCC		 729 "audio alternate setting %i, max size= %i\n", i,
730 adev->alt_max_pkt_size[i]);
84b5dbf3 731 }
e0d3bafd
SD		 732
733 return 0;
734}
735
736static int cx231xx_audio_fini(struct cx231xx *dev)
737{
738 if (dev == NULL)
739 return 0;
740
741 if (dev->has_alsa_audio != 1) {
742 /* This device does not support the extension (in this case
743 the device is expecting the snd-usb-audio module or
744 doesn't have analog audio support at all) */
745 return 0;
746 }
747
748 if (dev->adev.sndcard) {
749 snd_card_free(dev->adev.sndcard);
84b5dbf3 750 kfree(dev->adev.alt_max_pkt_size);
e0d3bafd
SD		 751 dev->adev.sndcard = NULL;
752 }
753
754 return 0;
755}
756
757static struct cx231xx_ops audio_ops = {
84b5dbf3 758 .id = CX231XX_AUDIO,
e0d3bafd
SD		 759 .name = "Cx231xx Audio Extension",
760 .init = cx231xx_audio_init,
761 .fini = cx231xx_audio_fini,
762};
763
764static int __init cx231xx_alsa_register(void)
765{
766 return cx231xx_register_extension(&audio_ops);
767}
768
769static void __exit cx231xx_alsa_unregister(void)
770{
771 cx231xx_unregister_extension(&audio_ops);
772}
773
774MODULE_LICENSE("GPL");
775MODULE_AUTHOR("Srinivasa Deevi <srinivasa.deevi@conexant.com>");
776MODULE_DESCRIPTION("Cx231xx Audio driver");
777
778module_init(cx231xx_alsa_register);
779module_exit(cx231xx_alsa_unregister);
Linux kernel - Deliverables
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