diff options
| -rw-r--r-- | drivers/media/video/em28xx/em28xx-audio.c | 373 |
1 files changed, 197 insertions, 176 deletions
diff --git a/drivers/media/video/em28xx/em28xx-audio.c b/drivers/media/video/em28xx/em28xx-audio.c index e1e1eda517a..c631cac4c5d 100644 --- a/drivers/media/video/em28xx/em28xx-audio.c +++ b/drivers/media/video/em28xx/em28xx-audio.c @@ -44,37 +44,39 @@ #include "em28xx.h" static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; -static int em28xx_cmd(struct em28xx *dev, int cmd,int arg); +static int em28xx_cmd(struct em28xx *dev, int cmd, int arg); - -static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs, size_t size) +static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs, + size_t size) { struct snd_pcm_runtime *runtime = subs->runtime; - if(runtime->dma_area){ - if(runtime->dma_bytes > size) + if (runtime->dma_area) { + if (runtime->dma_bytes > size) return 0; vfree(runtime->dma_area); } runtime->dma_area = vmalloc(size); - if(!runtime ->dma_area) + if (!runtime->dma_area) return -ENOMEM; runtime->dma_bytes = size; return 0; } static struct snd_pcm_hardware snd_em28xx_hw_capture = { - .info = SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_MMAP_VALID, + .info = + SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_MMAP_VALID, .formats = SNDRV_PCM_FMTBIT_S16_LE, .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_KNOT, .rate_min = 48000, .rate_max = 48000, .channels_min = 2, .channels_max = 2, - .buffer_bytes_max = 62720*8, /* just about the value in usbaudio.c */ - .period_bytes_min = 64, //12544/2, + .buffer_bytes_max = 62720 * 8, /* just about the value in usbaudio.c */ + .period_bytes_min = 64, //12544/2, .period_bytes_max = 12544, .periods_min = 2, - .periods_max = 98, //12544, + .periods_max = 98, //12544, }; static int snd_em28xx_capture_open(struct snd_pcm_substream *substream) @@ -84,66 +86,68 @@ static int snd_em28xx_capture_open(struct snd_pcm_substream *substream) struct em28xx *dev = snd_pcm_substream_chip(substream); struct snd_pcm_runtime *runtime = substream->runtime; printk("opening radio device and trying to acquire exclusive lock\n"); - switch(dev->mode){ - case TUNER_STUB_DVBC_TV: - case TUNER_STUB_DVBT_TV: - case TUNER_STUB_ATSC_TV: - /* digital has no support for analog audio */ - if (ret != 0 ) { - printk("device is already in use by DVB-T\n"); - return -EINVAL; - } else { - struct v4l2_tuner tuner; - printk("switching device to FM mode\n"); - - mode = TUNER_STUB_RADIO; - memset(&tuner, 0x0, sizeof(struct v4l2_tuner)); - tuner.type = V4L2_TUNER_RADIO; - - /* enable GPIO for analog TV */ - dev->em28xx_gpio_control(dev, EM28XX_MODE, (void*)mode); - dev->mode = mode; - /* upload firmware */ - tuner_run_cmd(dev->tobj, TUNER_CMD_INIT, (void*)mode); - - /* required for devices which have kerneldriver dependencies */ -// em28xx_config(dev); -// em28xx_config_i2c(dev); - - /* this is moreover to switch the decoder to FM */ - em28xx_i2c_call_clients(dev, VIDIOC_S_TUNER, &tuner); - - dev->em28xx_write_regs(dev, 0x0f, "\x87", 1); - ret = dev->em28xx_acquire(dev, EM28XX_RADIO, 1); - em28xx_i2c_call_clients(dev, VIDIOC_INT_RESET, 0); - /* TODO switch to FM mode */ - - printk("em28xx-audio: %d mode\n", mode); - tuner_run_cmd(dev->tobj, TUNER_CMD_G_MODE, &mode); - printk("retrieved mode from tuner: %d\n",mode); - } - break; - - case TUNER_STUB_ANALOG_TV: - printk("em28xx-audio: device is currently in analog TV mode\n"); - /* unmute by default */ - dev->em28xx_write_regs(dev, 0x0f, "\x87", 1); - break; - case TUNER_STUB_RADIO: - /* check current mode and put a hard lock onto it */ - printk("em28xx-audio: device is currently in analogue FM mode\n"); - /* unmute by default here */ - dev->em28xx_write_regs(dev, 0x0f, "\x87", 1); - ret = dev->em28xx_acquire(dev, EM28XX_RADIO, 1); - if ( ret == 0 ) - printk("device is locked in fmradio mode now\n"); - break; - default: - printk("em28xx-audio: unhandled mode %d\n", dev->mode); + switch (dev->mode) { + case TUNER_STUB_DVBC_TV: + case TUNER_STUB_DVBT_TV: + case TUNER_STUB_ATSC_TV: + /* digital has no support for analog audio */ + if (ret != 0) { + printk("device is already in use by DVB-T\n"); + return -EINVAL; + } else { + struct v4l2_tuner tuner; + printk("switching device to FM mode\n"); + + mode = TUNER_STUB_RADIO; + memset(&tuner, 0x0, sizeof(struct v4l2_tuner)); + tuner.type = V4L2_TUNER_RADIO; + + /* enable GPIO for analog TV */ + dev->em28xx_gpio_control(dev, EM28XX_MODE, + (void *)mode); + dev->mode = mode; + /* upload firmware */ + tuner_run_cmd(dev->tobj, TUNER_CMD_INIT, (void *)mode); + + /* required for devices which have kerneldriver dependencies */ +// em28xx_config(dev); +// em28xx_config_i2c(dev); + + /* this is moreover to switch the decoder to FM */ + em28xx_i2c_call_clients(dev, VIDIOC_S_TUNER, &tuner); + + dev->em28xx_write_regs(dev, 0x0f, "\x87", 1); + ret = dev->em28xx_acquire(dev, EM28XX_RADIO, 1); + em28xx_i2c_call_clients(dev, VIDIOC_INT_RESET, 0); + /* TODO switch to FM mode */ + + printk("em28xx-audio: %d mode\n", mode); + tuner_run_cmd(dev->tobj, TUNER_CMD_G_MODE, &mode); + printk("retrieved mode from tuner: %d\n", mode); + } + break; + + case TUNER_STUB_ANALOG_TV: + printk("em28xx-audio: device is currently in analog TV mode\n"); + /* unmute by default */ + dev->em28xx_write_regs(dev, 0x0f, "\x87", 1); + break; + case TUNER_STUB_RADIO: + /* check current mode and put a hard lock onto it */ + printk + ("em28xx-audio: device is currently in analogue FM mode\n"); + /* unmute by default here */ + dev->em28xx_write_regs(dev, 0x0f, "\x87", 1); + ret = dev->em28xx_acquire(dev, EM28XX_RADIO, 1); + if (ret == 0) + printk("device is locked in fmradio mode now\n"); + break; + default: + printk("em28xx-audio: unhandled mode %d\n", dev->mode); } runtime->hw = snd_em28xx_hw_capture; - if(dev->alt == 0 && dev->adev->users == 0 ) { + if (dev->alt == 0 && dev->adev->users == 0) { int errCode; dev->alt = 7; errCode = usb_set_interface(dev->udev, 0, 7); @@ -163,48 +167,51 @@ static int snd_em28xx_pcm_close(struct snd_pcm_substream *substream) dev->adev->users--; /* decrease audio reference */ - switch(dev->mode) { - case TUNER_STUB_ANALOG_TV: - amode = EM28XX_VIDEO; - break; - case TUNER_STUB_RADIO: - amode = EM28XX_RADIO; - break; - default: - printk("invalid mode: %d\n",dev->mode); - break; + switch (dev->mode) { + case TUNER_STUB_ANALOG_TV: + amode = EM28XX_VIDEO; + break; + case TUNER_STUB_RADIO: + amode = EM28XX_RADIO; + break; + default: + printk("invalid mode: %d\n", dev->mode); + break; } - dev->em28xx_acquire(dev, amode, 0); + dev->em28xx_acquire(dev, amode, 0); - if(dev->adev->users == 0 && dev->adev->shutdown == 1) { - printk("audio users: %d\n",dev->adev->users); + if (dev->adev->users == 0 && dev->adev->shutdown == 1) { + printk("audio users: %d\n", dev->adev->users); printk("disabling audio stream!\n"); dev->adev->shutdown = 0; printk("released lock\n"); - em28xx_cmd(dev,EM28XX_CAPTURE_STREAM_EN,0); + em28xx_cmd(dev, EM28XX_CAPTURE_STREAM_EN, 0); } return 0; } -static int snd_em28xx_hw_capture_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *hw_params) +static int snd_em28xx_hw_capture_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) { unsigned int channels, rate, format; int ret; - ret = snd_pcm_alloc_vmalloc_buffer(substream, params_buffer_bytes(hw_params)); + ret = + snd_pcm_alloc_vmalloc_buffer(substream, + params_buffer_bytes(hw_params)); format = params_format(hw_params); rate = params_rate(hw_params); channels = params_channels(hw_params); /* TODO: set up em28xx audio chip to deliver the correct audio format, current default is 48000hz multiplexed => 96000hz mono - which shouldn't matter since analogue TV only supports mono*/ + which shouldn't matter since analogue TV only supports mono */ return 0; } static int snd_em28xx_hw_capture_free(struct snd_pcm_substream *substream) { struct em28xx *dev = snd_pcm_substream_chip(substream); - if(dev->adev->capture_stream==STREAM_ON){ - em28xx_cmd(dev,EM28XX_CAPTURE_STREAM_EN,0); + if (dev->adev->capture_stream == STREAM_ON) { + em28xx_cmd(dev, EM28XX_CAPTURE_STREAM_EN, 0); } return 0; } @@ -214,24 +221,25 @@ static int snd_em28xx_prepare(struct snd_pcm_substream *substream) return 0; } -static int snd_em28xx_capture_trigger(struct snd_pcm_substream *substream, int cmd) +static int snd_em28xx_capture_trigger(struct snd_pcm_substream *substream, + int cmd) { struct em28xx *dev = snd_pcm_substream_chip(substream); - switch(cmd){ - case SNDRV_PCM_TRIGGER_START: - em28xx_cmd(dev,EM28XX_CAPTURE_STREAM_EN,1); - return 0; - case SNDRV_PCM_TRIGGER_STOP: - dev->adev->shutdown=1; - return 0; - default: - return -EINVAL; + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + em28xx_cmd(dev, EM28XX_CAPTURE_STREAM_EN, 1); + return 0; + case SNDRV_PCM_TRIGGER_STOP: + dev->adev->shutdown = 1; + return 0; + default: + return -EINVAL; } } static void em28xx_audio_isocirq(struct urb *urb) { - struct em28xx *dev=urb->context; + struct em28xx *dev = urb->context; int i; unsigned int oldptr; unsigned long flags; @@ -241,50 +249,61 @@ static void em28xx_audio_isocirq(struct urb *urb) unsigned int stride; struct snd_pcm_substream *substream; struct snd_pcm_runtime *runtime; - if(dev->adev->capture_pcm_substream){ - substream=dev->adev->capture_pcm_substream; - runtime=substream->runtime; + if (dev->adev->capture_pcm_substream) { + substream = dev->adev->capture_pcm_substream; + runtime = substream->runtime; stride = runtime->frame_bits >> 3; - for(i=0;i<urb->number_of_packets;i++){ - int length=urb->iso_frame_desc[i].actual_length/stride; - cp=(unsigned char *) urb->transfer_buffer + urb->iso_frame_desc[i].offset; + for (i = 0; i < urb->number_of_packets; i++) { + int length = + urb->iso_frame_desc[i].actual_length / stride; + cp = (unsigned char *)urb->transfer_buffer + + urb->iso_frame_desc[i].offset; - if(!length) + if (!length) continue; spin_lock_irqsave(&dev->adev->slock, flags); oldptr = dev->adev->hwptr_done_capture; - dev->adev->hwptr_done_capture +=length; - if(dev->adev->hwptr_done_capture >= runtime->buffer_size) - dev->adev->hwptr_done_capture -= runtime->buffer_size; + dev->adev->hwptr_done_capture += length; + if (dev->adev->hwptr_done_capture >= + runtime->buffer_size) + dev->adev->hwptr_done_capture -= + runtime->buffer_size; dev->adev->capture_transfer_done += length; - if(dev->adev->capture_transfer_done >= runtime->period_size){ - dev->adev->capture_transfer_done -= runtime->period_size; - period_elapsed=1; + if (dev->adev->capture_transfer_done >= + runtime->period_size) { + dev->adev->capture_transfer_done -= + runtime->period_size; + period_elapsed = 1; } spin_unlock_irqrestore(&dev->adev->slock, flags); - if(oldptr + length >= runtime->buffer_size){ - unsigned int cnt = runtime->buffer_size-oldptr-1; - memcpy(runtime->dma_area+oldptr*stride, cp , cnt*stride); - memcpy(runtime->dma_area, cp + cnt, length*stride - cnt*stride); + if (oldptr + length >= runtime->buffer_size) { + unsigned int cnt = + runtime->buffer_size - oldptr - 1; + memcpy(runtime->dma_area + oldptr * stride, cp, + cnt * stride); + memcpy(runtime->dma_area, cp + cnt, + length * stride - cnt * stride); } else { - memcpy(runtime->dma_area+oldptr*stride, cp, length*stride); + memcpy(runtime->dma_area + oldptr * stride, cp, + length * stride); } } - if(period_elapsed){ + if (period_elapsed) { snd_pcm_period_elapsed(substream); } } urb->status = 0; - - if(dev->adev->shutdown) + + if (dev->adev->shutdown) return; - if((status = usb_submit_urb(urb, GFP_ATOMIC))){ - em28xx_errdev("resubmit of audio urb failed (error=%i)\n", status); + if ((status = usb_submit_urb(urb, GFP_ATOMIC))) { + em28xx_errdev("resubmit of audio urb failed (error=%i)\n", + status); } return; } @@ -292,10 +311,10 @@ static void em28xx_audio_isocirq(struct urb *urb) static int em28xx_isoc_audio_deinit(struct em28xx *dev) { int i; - for(i=0;i<EM28XX_AUDIO_BUFS;i++){ + for (i = 0; i < EM28XX_AUDIO_BUFS; i++) { usb_kill_urb(dev->adev->urb[i]); usb_free_urb(dev->adev->urb[i]); - dev->adev->urb[i]=NULL; + dev->adev->urb[i] = NULL; } return 0; } @@ -304,40 +323,42 @@ static int em28xx_init_audio_isoc(struct em28xx *dev) { int i; int errCode; - const int sb_size=EM28XX_NUM_AUDIO_PACKETS * EM28XX_AUDIO_MAX_PACKET_SIZE; + const int sb_size = + EM28XX_NUM_AUDIO_PACKETS * EM28XX_AUDIO_MAX_PACKET_SIZE; - - for(i=0;i<EM28XX_AUDIO_BUFS;i++){ + for (i = 0; i < EM28XX_AUDIO_BUFS; i++) { struct urb *urb; - int j,k; - dev->adev->transfer_buffer[i]=kmalloc(sb_size,GFP_ATOMIC); - if(!dev->adev->transfer_buffer[i]){ + int j, k; + dev->adev->transfer_buffer[i] = kmalloc(sb_size, GFP_ATOMIC); + if (!dev->adev->transfer_buffer[i]) { return -ENOMEM; } - memset(dev->adev->transfer_buffer[i],0x80,sb_size); - urb = usb_alloc_urb(EM28XX_NUM_AUDIO_PACKETS,GFP_ATOMIC); - if(urb){ - urb->dev=dev->udev; - urb->context=dev; - urb->pipe=usb_rcvisocpipe(dev->udev,0x83); + memset(dev->adev->transfer_buffer[i], 0x80, sb_size); + urb = usb_alloc_urb(EM28XX_NUM_AUDIO_PACKETS, GFP_ATOMIC); + if (urb) { + urb->dev = dev->udev; + urb->context = dev; + urb->pipe = usb_rcvisocpipe(dev->udev, 0x83); urb->transfer_flags = URB_ISO_ASAP; urb->transfer_buffer = dev->adev->transfer_buffer[i]; - urb->interval=1; + urb->interval = 1; urb->complete = em28xx_audio_isocirq; urb->number_of_packets = EM28XX_NUM_AUDIO_PACKETS; urb->transfer_buffer_length = sb_size; - for(j=k=0; j<EM28XX_NUM_AUDIO_PACKETS;j++,k+=EM28XX_AUDIO_MAX_PACKET_SIZE){ + for (j = k = 0; j < EM28XX_NUM_AUDIO_PACKETS; + j++, k += EM28XX_AUDIO_MAX_PACKET_SIZE) { urb->iso_frame_desc[j].offset = k; - urb->iso_frame_desc[j].length=EM28XX_AUDIO_MAX_PACKET_SIZE; + urb->iso_frame_desc[j].length = + EM28XX_AUDIO_MAX_PACKET_SIZE; } - dev->adev->urb[i]=urb; + dev->adev->urb[i] = urb; } else { return -ENOMEM; } } - for(i=0;i<EM28XX_AUDIO_BUFS;i++){ + for (i = 0; i < EM28XX_AUDIO_BUFS; i++) { errCode = usb_submit_urb(dev->adev->urb[i], GFP_ATOMIC); - if (errCode){ + if (errCode) { em28xx_isoc_audio_deinit(dev); return errCode; } @@ -345,27 +366,28 @@ static int em28xx_init_audio_isoc(struct em28xx *dev) return 0; } - -static int em28xx_cmd(struct em28xx *dev, int cmd,int arg) +static int em28xx_cmd(struct em28xx *dev, int cmd, int arg) { - switch(cmd){ - case EM28XX_CAPTURE_STREAM_EN: - if(dev->adev->capture_stream == STREAM_OFF && arg==1){ - dev->adev->capture_stream=STREAM_ON; - em28xx_init_audio_isoc(dev); - } else if (dev->adev->capture_stream==STREAM_ON && arg==0){ - dev->adev->capture_stream=STREAM_OFF; - em28xx_isoc_audio_deinit(dev); - } else { - printk("An underrun occured very likely... ignoring it\n"); - } - return 0; - default: - return -EINVAL; + switch (cmd) { + case EM28XX_CAPTURE_STREAM_EN: + if (dev->adev->capture_stream == STREAM_OFF && arg == 1) { + dev->adev->capture_stream = STREAM_ON; + em28xx_init_audio_isoc(dev); + } else if (dev->adev->capture_stream == STREAM_ON && arg == 0) { + dev->adev->capture_stream = STREAM_OFF; + em28xx_isoc_audio_deinit(dev); + } else { + printk + ("An underrun occured very likely... ignoring it\n"); + } + return 0; + default: + return -EINVAL; } } -static snd_pcm_uframes_t snd_em28xx_capture_pointer(struct snd_pcm_substream *substream) +static snd_pcm_uframes_t snd_em28xx_capture_pointer(struct snd_pcm_substream + *substream) { struct em28xx *dev; snd_pcm_uframes_t hwptr_done; @@ -393,7 +415,6 @@ static struct snd_pcm_ops snd_em28xx_pcm_capture = { .page = snd_pcm_get_vmalloc_page, }; - static int em28xx_audio_init(struct em28xx *dev) { struct em28xx_audio *adev; @@ -404,54 +425,54 @@ static int em28xx_audio_init(struct em28xx *dev) int err; printk("em28xx-audio.c: probing for em28x1 non standard usbaudio\n"); printk("em28xx-audio.c: Copyright (C) 2006 Markus Rechberger\n"); - adev=kzalloc(sizeof(*adev),GFP_KERNEL); - if(!adev){ + adev = kzalloc(sizeof(*adev), GFP_KERNEL); + if (!adev) { printk("em28xx-audio.c: out of memory\n"); return -1; } - card = snd_card_new(index[devnr], "Em28xx Audio", THIS_MODULE,0); - if(card==NULL){ + card = snd_card_new(index[devnr], "Em28xx Audio", THIS_MODULE, 0); + if (card == NULL) { kfree(adev); return -ENOMEM; } spin_lock_init(&adev->slock); - ret=snd_pcm_new(card, "Em28xx Audio", 0, 0, 1, &pcm); + ret = snd_pcm_new(card, "Em28xx Audio", 0, 0, 1, &pcm); snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_em28xx_pcm_capture); pcm->info_flags = 0; pcm->private_data = dev; - strcpy(pcm->name,"Empia 28xx Capture"); + strcpy(pcm->name, "Empia 28xx Capture"); strcpy(card->driver, "Empia Em28xx Audio"); strcpy(card->shortname, "Em28xx Audio"); - strcpy(card->longname,"Empia Em28xx Audio"); + strcpy(card->longname, "Empia Em28xx Audio"); - if((err = snd_card_register(card))<0){ + if ((err = snd_card_register(card)) < 0) { snd_card_free(card); return -ENOMEM; } - adev->sndcard=card; - adev->udev=dev->udev; - dev->adev=adev; + adev->sndcard = card; + adev->udev = dev->udev; + dev->adev = adev; return 0; } static int em28xx_audio_fini(struct em28xx *dev) { - if(dev==NULL) + if (dev == NULL) return 0; - if(dev->adev){ + if (dev->adev) { snd_card_free(dev->adev->sndcard); kfree(dev->adev); - dev->adev=NULL; + dev->adev = NULL; } return 0; } static struct em28xx_ops audio_ops = { - .id = EM28XX_AUDIO, - .name = "Em28xx Audio Extension", - .init = em28xx_audio_init, - .fini = em28xx_audio_fini, + .id = EM28XX_AUDIO, + .name = "Em28xx Audio Extension", + .init = em28xx_audio_init, + .fini = em28xx_audio_fini, }; static int __init em28xx_alsa_register(void) |