163ddf68dSFederico Simoncelli /* 263ddf68dSFederico Simoncelli * Copyright (c) 2013 Federico Simoncelli 363ddf68dSFederico Simoncelli * All rights reserved. 463ddf68dSFederico Simoncelli * 563ddf68dSFederico Simoncelli * Redistribution and use in source and binary forms, with or without 663ddf68dSFederico Simoncelli * modification, are permitted provided that the following conditions 763ddf68dSFederico Simoncelli * are met: 863ddf68dSFederico Simoncelli * 1. Redistributions of source code must retain the above copyright 963ddf68dSFederico Simoncelli * notice, this list of conditions, and the following disclaimer, 1063ddf68dSFederico Simoncelli * without modification. 1163ddf68dSFederico Simoncelli * 2. The name of the author may not be used to endorse or promote products 1263ddf68dSFederico Simoncelli * derived from this software without specific prior written permission. 1363ddf68dSFederico Simoncelli * 1463ddf68dSFederico Simoncelli * Alternatively, this software may be distributed under the terms of the 1563ddf68dSFederico Simoncelli * GNU General Public License ("GPL"). 165ae1e2b2SLubomir Rintel * 175ae1e2b2SLubomir Rintel * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 185ae1e2b2SLubomir Rintel * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 195ae1e2b2SLubomir Rintel * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 205ae1e2b2SLubomir Rintel * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 215ae1e2b2SLubomir Rintel * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 225ae1e2b2SLubomir Rintel * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 235ae1e2b2SLubomir Rintel * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 245ae1e2b2SLubomir Rintel * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 255ae1e2b2SLubomir Rintel * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 265ae1e2b2SLubomir Rintel * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 275ae1e2b2SLubomir Rintel * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 285ae1e2b2SLubomir Rintel */ 295ae1e2b2SLubomir Rintel /* 305ae1e2b2SLubomir Rintel * Fushicai USBTV007 Audio-Video Grabber Driver 315ae1e2b2SLubomir Rintel * 325ae1e2b2SLubomir Rintel * Product web site: 335ae1e2b2SLubomir Rintel * http://www.fushicai.com/products_detail/&productId=d05449ee-b690-42f9-a661-aa7353894bed.html 345ae1e2b2SLubomir Rintel * 355ae1e2b2SLubomir Rintel * No physical hardware was harmed running Windows during the 365ae1e2b2SLubomir Rintel * reverse-engineering activity 3763ddf68dSFederico Simoncelli */ 3863ddf68dSFederico Simoncelli 3963ddf68dSFederico Simoncelli #include <sound/core.h> 4063ddf68dSFederico Simoncelli #include <sound/initval.h> 4163ddf68dSFederico Simoncelli #include <sound/ac97_codec.h> 4263ddf68dSFederico Simoncelli #include <sound/pcm_params.h> 4363ddf68dSFederico Simoncelli 4463ddf68dSFederico Simoncelli #include "usbtv.h" 4563ddf68dSFederico Simoncelli 4638c4f03aSBhumika Goyal static const struct snd_pcm_hardware snd_usbtv_digital_hw = { 4763ddf68dSFederico Simoncelli .info = SNDRV_PCM_INFO_BATCH | 4863ddf68dSFederico Simoncelli SNDRV_PCM_INFO_MMAP | 4963ddf68dSFederico Simoncelli SNDRV_PCM_INFO_INTERLEAVED | 5063ddf68dSFederico Simoncelli SNDRV_PCM_INFO_BLOCK_TRANSFER | 5163ddf68dSFederico Simoncelli SNDRV_PCM_INFO_MMAP_VALID, 5263ddf68dSFederico Simoncelli .formats = SNDRV_PCM_FMTBIT_S16_LE, 5363ddf68dSFederico Simoncelli .rates = SNDRV_PCM_RATE_48000, 5463ddf68dSFederico Simoncelli .rate_min = 48000, 5563ddf68dSFederico Simoncelli .rate_max = 48000, 5663ddf68dSFederico Simoncelli .channels_min = 2, 5763ddf68dSFederico Simoncelli .channels_max = 2, 5863ddf68dSFederico Simoncelli .period_bytes_min = 11059, 5963ddf68dSFederico Simoncelli .period_bytes_max = 13516, 6063ddf68dSFederico Simoncelli .periods_min = 2, 6163ddf68dSFederico Simoncelli .periods_max = 98, 6263ddf68dSFederico Simoncelli .buffer_bytes_max = 62720 * 8, /* value in usbaudio.c */ 6363ddf68dSFederico Simoncelli }; 6463ddf68dSFederico Simoncelli 6563ddf68dSFederico Simoncelli static int snd_usbtv_pcm_open(struct snd_pcm_substream *substream) 6663ddf68dSFederico Simoncelli { 6763ddf68dSFederico Simoncelli struct usbtv *chip = snd_pcm_substream_chip(substream); 6863ddf68dSFederico Simoncelli struct snd_pcm_runtime *runtime = substream->runtime; 6963ddf68dSFederico Simoncelli 7063ddf68dSFederico Simoncelli chip->snd_substream = substream; 7163ddf68dSFederico Simoncelli runtime->hw = snd_usbtv_digital_hw; 7263ddf68dSFederico Simoncelli 7363ddf68dSFederico Simoncelli return 0; 7463ddf68dSFederico Simoncelli } 7563ddf68dSFederico Simoncelli 7663ddf68dSFederico Simoncelli static int snd_usbtv_pcm_close(struct snd_pcm_substream *substream) 7763ddf68dSFederico Simoncelli { 7863ddf68dSFederico Simoncelli struct usbtv *chip = snd_pcm_substream_chip(substream); 7963ddf68dSFederico Simoncelli 8063ddf68dSFederico Simoncelli if (atomic_read(&chip->snd_stream)) { 8163ddf68dSFederico Simoncelli atomic_set(&chip->snd_stream, 0); 8263ddf68dSFederico Simoncelli schedule_work(&chip->snd_trigger); 8363ddf68dSFederico Simoncelli } 8463ddf68dSFederico Simoncelli 8563ddf68dSFederico Simoncelli return 0; 8663ddf68dSFederico Simoncelli } 8763ddf68dSFederico Simoncelli 8863ddf68dSFederico Simoncelli static int snd_usbtv_prepare(struct snd_pcm_substream *substream) 8963ddf68dSFederico Simoncelli { 9063ddf68dSFederico Simoncelli struct usbtv *chip = snd_pcm_substream_chip(substream); 9163ddf68dSFederico Simoncelli 9263ddf68dSFederico Simoncelli chip->snd_buffer_pos = 0; 9363ddf68dSFederico Simoncelli chip->snd_period_pos = 0; 9463ddf68dSFederico Simoncelli 9563ddf68dSFederico Simoncelli return 0; 9663ddf68dSFederico Simoncelli } 9763ddf68dSFederico Simoncelli 9863ddf68dSFederico Simoncelli static void usbtv_audio_urb_received(struct urb *urb) 9963ddf68dSFederico Simoncelli { 10063ddf68dSFederico Simoncelli struct usbtv *chip = urb->context; 10163ddf68dSFederico Simoncelli struct snd_pcm_substream *substream = chip->snd_substream; 10263ddf68dSFederico Simoncelli struct snd_pcm_runtime *runtime = substream->runtime; 10363ddf68dSFederico Simoncelli size_t i, frame_bytes, chunk_length, buffer_pos, period_pos; 10463ddf68dSFederico Simoncelli int period_elapsed; 105320905baSSebastian Andrzej Siewior unsigned long flags; 10663ddf68dSFederico Simoncelli void *urb_current; 10763ddf68dSFederico Simoncelli 10863ddf68dSFederico Simoncelli switch (urb->status) { 10963ddf68dSFederico Simoncelli case 0: 11063ddf68dSFederico Simoncelli case -ETIMEDOUT: 11163ddf68dSFederico Simoncelli break; 11263ddf68dSFederico Simoncelli case -ENOENT: 11363ddf68dSFederico Simoncelli case -EPROTO: 11463ddf68dSFederico Simoncelli case -ECONNRESET: 11563ddf68dSFederico Simoncelli case -ESHUTDOWN: 11663ddf68dSFederico Simoncelli return; 11763ddf68dSFederico Simoncelli default: 11863ddf68dSFederico Simoncelli dev_warn(chip->dev, "unknown audio urb status %i\n", 11963ddf68dSFederico Simoncelli urb->status); 12063ddf68dSFederico Simoncelli } 12163ddf68dSFederico Simoncelli 12263ddf68dSFederico Simoncelli if (!atomic_read(&chip->snd_stream)) 12363ddf68dSFederico Simoncelli return; 12463ddf68dSFederico Simoncelli 12563ddf68dSFederico Simoncelli frame_bytes = runtime->frame_bits >> 3; 12663ddf68dSFederico Simoncelli chunk_length = USBTV_CHUNK / frame_bytes; 12763ddf68dSFederico Simoncelli 12863ddf68dSFederico Simoncelli buffer_pos = chip->snd_buffer_pos; 12963ddf68dSFederico Simoncelli period_pos = chip->snd_period_pos; 13063ddf68dSFederico Simoncelli period_elapsed = 0; 13163ddf68dSFederico Simoncelli 13263ddf68dSFederico Simoncelli for (i = 0; i < urb->actual_length; i += USBTV_CHUNK_SIZE) { 13363ddf68dSFederico Simoncelli urb_current = urb->transfer_buffer + i + USBTV_AUDIO_HDRSIZE; 13463ddf68dSFederico Simoncelli 13563ddf68dSFederico Simoncelli if (buffer_pos + chunk_length >= runtime->buffer_size) { 13663ddf68dSFederico Simoncelli size_t cnt = (runtime->buffer_size - buffer_pos) * 13763ddf68dSFederico Simoncelli frame_bytes; 13863ddf68dSFederico Simoncelli memcpy(runtime->dma_area + buffer_pos * frame_bytes, 13963ddf68dSFederico Simoncelli urb_current, cnt); 14063ddf68dSFederico Simoncelli memcpy(runtime->dma_area, urb_current + cnt, 14163ddf68dSFederico Simoncelli chunk_length * frame_bytes - cnt); 14263ddf68dSFederico Simoncelli } else { 14363ddf68dSFederico Simoncelli memcpy(runtime->dma_area + buffer_pos * frame_bytes, 14463ddf68dSFederico Simoncelli urb_current, chunk_length * frame_bytes); 14563ddf68dSFederico Simoncelli } 14663ddf68dSFederico Simoncelli 14763ddf68dSFederico Simoncelli buffer_pos += chunk_length; 14863ddf68dSFederico Simoncelli period_pos += chunk_length; 14963ddf68dSFederico Simoncelli 15063ddf68dSFederico Simoncelli if (buffer_pos >= runtime->buffer_size) 15163ddf68dSFederico Simoncelli buffer_pos -= runtime->buffer_size; 15263ddf68dSFederico Simoncelli 15363ddf68dSFederico Simoncelli if (period_pos >= runtime->period_size) { 15463ddf68dSFederico Simoncelli period_pos -= runtime->period_size; 15563ddf68dSFederico Simoncelli period_elapsed = 1; 15663ddf68dSFederico Simoncelli } 15763ddf68dSFederico Simoncelli } 15863ddf68dSFederico Simoncelli 159320905baSSebastian Andrzej Siewior snd_pcm_stream_lock_irqsave(substream, flags); 16063ddf68dSFederico Simoncelli 16163ddf68dSFederico Simoncelli chip->snd_buffer_pos = buffer_pos; 16263ddf68dSFederico Simoncelli chip->snd_period_pos = period_pos; 16363ddf68dSFederico Simoncelli 164320905baSSebastian Andrzej Siewior snd_pcm_stream_unlock_irqrestore(substream, flags); 16563ddf68dSFederico Simoncelli 16663ddf68dSFederico Simoncelli if (period_elapsed) 16763ddf68dSFederico Simoncelli snd_pcm_period_elapsed(substream); 16863ddf68dSFederico Simoncelli 16963ddf68dSFederico Simoncelli usb_submit_urb(urb, GFP_ATOMIC); 17063ddf68dSFederico Simoncelli } 17163ddf68dSFederico Simoncelli 17263ddf68dSFederico Simoncelli static int usbtv_audio_start(struct usbtv *chip) 17363ddf68dSFederico Simoncelli { 17463ddf68dSFederico Simoncelli unsigned int pipe; 17563ddf68dSFederico Simoncelli static const u16 setup[][2] = { 17663ddf68dSFederico Simoncelli /* These seem to enable the device. */ 17763ddf68dSFederico Simoncelli { USBTV_BASE + 0x0008, 0x0001 }, 17863ddf68dSFederico Simoncelli { USBTV_BASE + 0x01d0, 0x00ff }, 17963ddf68dSFederico Simoncelli { USBTV_BASE + 0x01d9, 0x0002 }, 18063ddf68dSFederico Simoncelli 18163ddf68dSFederico Simoncelli { USBTV_BASE + 0x01da, 0x0013 }, 18263ddf68dSFederico Simoncelli { USBTV_BASE + 0x01db, 0x0012 }, 18363ddf68dSFederico Simoncelli { USBTV_BASE + 0x01e9, 0x0002 }, 18463ddf68dSFederico Simoncelli { USBTV_BASE + 0x01ec, 0x006c }, 18563ddf68dSFederico Simoncelli { USBTV_BASE + 0x0294, 0x0020 }, 18663ddf68dSFederico Simoncelli { USBTV_BASE + 0x0255, 0x00cf }, 18763ddf68dSFederico Simoncelli { USBTV_BASE + 0x0256, 0x0020 }, 18863ddf68dSFederico Simoncelli { USBTV_BASE + 0x01eb, 0x0030 }, 18963ddf68dSFederico Simoncelli { USBTV_BASE + 0x027d, 0x00a6 }, 19063ddf68dSFederico Simoncelli { USBTV_BASE + 0x0280, 0x0011 }, 19163ddf68dSFederico Simoncelli { USBTV_BASE + 0x0281, 0x0040 }, 19263ddf68dSFederico Simoncelli { USBTV_BASE + 0x0282, 0x0011 }, 19363ddf68dSFederico Simoncelli { USBTV_BASE + 0x0283, 0x0040 }, 19463ddf68dSFederico Simoncelli { 0xf891, 0x0010 }, 19563ddf68dSFederico Simoncelli 19663ddf68dSFederico Simoncelli /* this sets the input from composite */ 19763ddf68dSFederico Simoncelli { USBTV_BASE + 0x0284, 0x00aa }, 19863ddf68dSFederico Simoncelli }; 19963ddf68dSFederico Simoncelli 20063ddf68dSFederico Simoncelli chip->snd_bulk_urb = usb_alloc_urb(0, GFP_KERNEL); 20163ddf68dSFederico Simoncelli if (chip->snd_bulk_urb == NULL) 20263ddf68dSFederico Simoncelli goto err_alloc_urb; 20363ddf68dSFederico Simoncelli 20463ddf68dSFederico Simoncelli pipe = usb_rcvbulkpipe(chip->udev, USBTV_AUDIO_ENDP); 20563ddf68dSFederico Simoncelli 20663ddf68dSFederico Simoncelli chip->snd_bulk_urb->transfer_buffer = kzalloc( 20763ddf68dSFederico Simoncelli USBTV_AUDIO_URBSIZE, GFP_KERNEL); 20863ddf68dSFederico Simoncelli if (chip->snd_bulk_urb->transfer_buffer == NULL) 20963ddf68dSFederico Simoncelli goto err_transfer_buffer; 21063ddf68dSFederico Simoncelli 21163ddf68dSFederico Simoncelli usb_fill_bulk_urb(chip->snd_bulk_urb, chip->udev, pipe, 21263ddf68dSFederico Simoncelli chip->snd_bulk_urb->transfer_buffer, USBTV_AUDIO_URBSIZE, 21363ddf68dSFederico Simoncelli usbtv_audio_urb_received, chip); 21463ddf68dSFederico Simoncelli 21563ddf68dSFederico Simoncelli /* starting the stream */ 21663ddf68dSFederico Simoncelli usbtv_set_regs(chip, setup, ARRAY_SIZE(setup)); 21763ddf68dSFederico Simoncelli 21863ddf68dSFederico Simoncelli usb_clear_halt(chip->udev, pipe); 21963ddf68dSFederico Simoncelli usb_submit_urb(chip->snd_bulk_urb, GFP_ATOMIC); 22063ddf68dSFederico Simoncelli 22163ddf68dSFederico Simoncelli return 0; 22263ddf68dSFederico Simoncelli 22363ddf68dSFederico Simoncelli err_transfer_buffer: 22463ddf68dSFederico Simoncelli usb_free_urb(chip->snd_bulk_urb); 22563ddf68dSFederico Simoncelli chip->snd_bulk_urb = NULL; 22663ddf68dSFederico Simoncelli 22763ddf68dSFederico Simoncelli err_alloc_urb: 22863ddf68dSFederico Simoncelli return -ENOMEM; 22963ddf68dSFederico Simoncelli } 23063ddf68dSFederico Simoncelli 23163ddf68dSFederico Simoncelli static int usbtv_audio_stop(struct usbtv *chip) 23263ddf68dSFederico Simoncelli { 23363ddf68dSFederico Simoncelli static const u16 setup[][2] = { 23463ddf68dSFederico Simoncelli /* The original windows driver sometimes sends also: 23563ddf68dSFederico Simoncelli * { USBTV_BASE + 0x00a2, 0x0013 } 23663ddf68dSFederico Simoncelli * but it seems useless and its real effects are untested at 23763ddf68dSFederico Simoncelli * the moment. 23863ddf68dSFederico Simoncelli */ 23963ddf68dSFederico Simoncelli { USBTV_BASE + 0x027d, 0x0000 }, 24063ddf68dSFederico Simoncelli { USBTV_BASE + 0x0280, 0x0010 }, 24163ddf68dSFederico Simoncelli { USBTV_BASE + 0x0282, 0x0010 }, 24263ddf68dSFederico Simoncelli }; 24363ddf68dSFederico Simoncelli 24463ddf68dSFederico Simoncelli if (chip->snd_bulk_urb) { 24563ddf68dSFederico Simoncelli usb_kill_urb(chip->snd_bulk_urb); 24663ddf68dSFederico Simoncelli kfree(chip->snd_bulk_urb->transfer_buffer); 24763ddf68dSFederico Simoncelli usb_free_urb(chip->snd_bulk_urb); 24863ddf68dSFederico Simoncelli chip->snd_bulk_urb = NULL; 24963ddf68dSFederico Simoncelli } 25063ddf68dSFederico Simoncelli 25163ddf68dSFederico Simoncelli usbtv_set_regs(chip, setup, ARRAY_SIZE(setup)); 25263ddf68dSFederico Simoncelli 25363ddf68dSFederico Simoncelli return 0; 25463ddf68dSFederico Simoncelli } 25563ddf68dSFederico Simoncelli 25663ddf68dSFederico Simoncelli void usbtv_audio_suspend(struct usbtv *usbtv) 25763ddf68dSFederico Simoncelli { 25863ddf68dSFederico Simoncelli if (atomic_read(&usbtv->snd_stream) && usbtv->snd_bulk_urb) 25963ddf68dSFederico Simoncelli usb_kill_urb(usbtv->snd_bulk_urb); 26063ddf68dSFederico Simoncelli } 26163ddf68dSFederico Simoncelli 26263ddf68dSFederico Simoncelli void usbtv_audio_resume(struct usbtv *usbtv) 26363ddf68dSFederico Simoncelli { 26463ddf68dSFederico Simoncelli if (atomic_read(&usbtv->snd_stream) && usbtv->snd_bulk_urb) 26563ddf68dSFederico Simoncelli usb_submit_urb(usbtv->snd_bulk_urb, GFP_ATOMIC); 26663ddf68dSFederico Simoncelli } 26763ddf68dSFederico Simoncelli 26863ddf68dSFederico Simoncelli static void snd_usbtv_trigger(struct work_struct *work) 26963ddf68dSFederico Simoncelli { 27063ddf68dSFederico Simoncelli struct usbtv *chip = container_of(work, struct usbtv, snd_trigger); 27163ddf68dSFederico Simoncelli 2722a00932fSMatthew Leach if (!chip->snd) 2732a00932fSMatthew Leach return; 2742a00932fSMatthew Leach 27563ddf68dSFederico Simoncelli if (atomic_read(&chip->snd_stream)) 27663ddf68dSFederico Simoncelli usbtv_audio_start(chip); 27763ddf68dSFederico Simoncelli else 27863ddf68dSFederico Simoncelli usbtv_audio_stop(chip); 27963ddf68dSFederico Simoncelli } 28063ddf68dSFederico Simoncelli 28163ddf68dSFederico Simoncelli static int snd_usbtv_card_trigger(struct snd_pcm_substream *substream, int cmd) 28263ddf68dSFederico Simoncelli { 28363ddf68dSFederico Simoncelli struct usbtv *chip = snd_pcm_substream_chip(substream); 28463ddf68dSFederico Simoncelli 28563ddf68dSFederico Simoncelli switch (cmd) { 28663ddf68dSFederico Simoncelli case SNDRV_PCM_TRIGGER_START: 28763ddf68dSFederico Simoncelli case SNDRV_PCM_TRIGGER_RESUME: 28863ddf68dSFederico Simoncelli case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 28963ddf68dSFederico Simoncelli atomic_set(&chip->snd_stream, 1); 29063ddf68dSFederico Simoncelli break; 29163ddf68dSFederico Simoncelli case SNDRV_PCM_TRIGGER_STOP: 29263ddf68dSFederico Simoncelli case SNDRV_PCM_TRIGGER_SUSPEND: 29363ddf68dSFederico Simoncelli case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 29463ddf68dSFederico Simoncelli atomic_set(&chip->snd_stream, 0); 29563ddf68dSFederico Simoncelli break; 29663ddf68dSFederico Simoncelli default: 29763ddf68dSFederico Simoncelli return -EINVAL; 29863ddf68dSFederico Simoncelli } 29963ddf68dSFederico Simoncelli 30063ddf68dSFederico Simoncelli schedule_work(&chip->snd_trigger); 30163ddf68dSFederico Simoncelli 30263ddf68dSFederico Simoncelli return 0; 30363ddf68dSFederico Simoncelli } 30463ddf68dSFederico Simoncelli 30563ddf68dSFederico Simoncelli static snd_pcm_uframes_t snd_usbtv_pointer(struct snd_pcm_substream *substream) 30663ddf68dSFederico Simoncelli { 30763ddf68dSFederico Simoncelli struct usbtv *chip = snd_pcm_substream_chip(substream); 308146af9cbSAmber Thrall 30963ddf68dSFederico Simoncelli return chip->snd_buffer_pos; 31063ddf68dSFederico Simoncelli } 31163ddf68dSFederico Simoncelli 31222511cfaSJulia Lawall static const struct snd_pcm_ops snd_usbtv_pcm_ops = { 31363ddf68dSFederico Simoncelli .open = snd_usbtv_pcm_open, 31463ddf68dSFederico Simoncelli .close = snd_usbtv_pcm_close, 31563ddf68dSFederico Simoncelli .ioctl = snd_pcm_lib_ioctl, 31663ddf68dSFederico Simoncelli .prepare = snd_usbtv_prepare, 31763ddf68dSFederico Simoncelli .trigger = snd_usbtv_card_trigger, 31863ddf68dSFederico Simoncelli .pointer = snd_usbtv_pointer, 31963ddf68dSFederico Simoncelli }; 32063ddf68dSFederico Simoncelli 32163ddf68dSFederico Simoncelli int usbtv_audio_init(struct usbtv *usbtv) 32263ddf68dSFederico Simoncelli { 32363ddf68dSFederico Simoncelli int rv; 32463ddf68dSFederico Simoncelli struct snd_card *card; 32563ddf68dSFederico Simoncelli struct snd_pcm *pcm; 32663ddf68dSFederico Simoncelli 32763ddf68dSFederico Simoncelli INIT_WORK(&usbtv->snd_trigger, snd_usbtv_trigger); 32863ddf68dSFederico Simoncelli atomic_set(&usbtv->snd_stream, 0); 32963ddf68dSFederico Simoncelli 33063ddf68dSFederico Simoncelli rv = snd_card_new(&usbtv->udev->dev, SNDRV_DEFAULT_IDX1, "usbtv", 33163ddf68dSFederico Simoncelli THIS_MODULE, 0, &card); 33263ddf68dSFederico Simoncelli if (rv < 0) 33363ddf68dSFederico Simoncelli return rv; 33463ddf68dSFederico Simoncelli 335c0decac1SMauro Carvalho Chehab strscpy(card->driver, usbtv->dev->driver->name, sizeof(card->driver)); 336c0decac1SMauro Carvalho Chehab strscpy(card->shortname, "usbtv", sizeof(card->shortname)); 33763ddf68dSFederico Simoncelli snprintf(card->longname, sizeof(card->longname), 33863ddf68dSFederico Simoncelli "USBTV Audio at bus %d device %d", usbtv->udev->bus->busnum, 33963ddf68dSFederico Simoncelli usbtv->udev->devnum); 34063ddf68dSFederico Simoncelli 34163ddf68dSFederico Simoncelli snd_card_set_dev(card, usbtv->dev); 34263ddf68dSFederico Simoncelli 34363ddf68dSFederico Simoncelli usbtv->snd = card; 34463ddf68dSFederico Simoncelli 34563ddf68dSFederico Simoncelli rv = snd_pcm_new(card, "USBTV Audio", 0, 0, 1, &pcm); 34663ddf68dSFederico Simoncelli if (rv < 0) 34763ddf68dSFederico Simoncelli goto err; 34863ddf68dSFederico Simoncelli 349c0decac1SMauro Carvalho Chehab strscpy(pcm->name, "USBTV Audio Input", sizeof(pcm->name)); 35063ddf68dSFederico Simoncelli pcm->info_flags = 0; 35163ddf68dSFederico Simoncelli pcm->private_data = usbtv; 35263ddf68dSFederico Simoncelli 35363ddf68dSFederico Simoncelli snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_usbtv_pcm_ops); 3548079c5d5STakashi Iwai snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, 355ef99d99bSTakashi Iwai NULL, USBTV_AUDIO_BUFFER, USBTV_AUDIO_BUFFER); 35663ddf68dSFederico Simoncelli 35763ddf68dSFederico Simoncelli rv = snd_card_register(card); 35863ddf68dSFederico Simoncelli if (rv) 35963ddf68dSFederico Simoncelli goto err; 36063ddf68dSFederico Simoncelli 36163ddf68dSFederico Simoncelli return 0; 36263ddf68dSFederico Simoncelli 36363ddf68dSFederico Simoncelli err: 36463ddf68dSFederico Simoncelli usbtv->snd = NULL; 36563ddf68dSFederico Simoncelli snd_card_free(card); 36663ddf68dSFederico Simoncelli 36763ddf68dSFederico Simoncelli return rv; 36863ddf68dSFederico Simoncelli } 36963ddf68dSFederico Simoncelli 37063ddf68dSFederico Simoncelli void usbtv_audio_free(struct usbtv *usbtv) 37163ddf68dSFederico Simoncelli { 3722a00932fSMatthew Leach cancel_work_sync(&usbtv->snd_trigger); 3732a00932fSMatthew Leach 37463ddf68dSFederico Simoncelli if (usbtv->snd && usbtv->udev) { 37563ddf68dSFederico Simoncelli snd_card_free(usbtv->snd); 37663ddf68dSFederico Simoncelli usbtv->snd = NULL; 37763ddf68dSFederico Simoncelli } 37863ddf68dSFederico Simoncelli } 379