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V4L/DVB (6950): Lindent em28xx-audio.c

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Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Mauro Carvalho Chehab 2008-01-05 09:56:24 -03:00
parent a52932b405
commit 1a6f11e0e8
1 changed files with 190 additions and 169 deletions
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75
drivers/media/video/em28xx/em28xx-audio.c
View file

@ -46,8 +46,8 @@
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
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) {
@ -63,7 +63,9 @@ static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs, size_t s
}
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,
@ -101,7 +103,8 @@ static int snd_em28xx_capture_open(struct snd_pcm_substream *substream)
tuner.type = V4L2_TUNER_RADIO;
/* enable GPIO for analog TV */
dev->em28xx_gpio_control(dev, EM28XX_MODE, (void*)mode);
dev->em28xx_gpio_control(dev, EM28XX_MODE,
(void *)mode);
dev->mode = mode;
/* upload firmware */
tuner_run_cmd(dev->tobj, TUNER_CMD_INIT, (void *)mode);
@ -131,7 +134,8 @@ static int snd_em28xx_capture_open(struct snd_pcm_substream *substream)
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");
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);
@ -187,11 +191,14 @@ static int snd_em28xx_pcm_close(struct snd_pcm_substream *substream)
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);
@ -214,7 +221,8 @@ 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) {
@ -247,8 +255,10 @@ static void em28xx_audio_isocirq(struct urb *urb)
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;
int length =
urb->iso_frame_desc[i].actual_length / stride;
cp = (unsigned char *)urb->transfer_buffer +
urb->iso_frame_desc[i].offset;
if (!length)
continue;
@ -256,22 +266,30 @@ static void em28xx_audio_isocirq(struct urb *urb)
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;
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;
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);
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) {
@ -284,7 +302,8 @@ static void em28xx_audio_isocirq(struct urb *urb)
return;
if ((status = usb_submit_urb(urb, GFP_ATOMIC))) {
em28xx_errdev("resubmit of audio urb failed (error=%i)\n", status);
em28xx_errdev("resubmit of audio urb failed (error=%i)\n",
status);
}
return;
}
@ -304,8 +323,8 @@ 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++) {
struct urb *urb;
@ -326,9 +345,11 @@ static int em28xx_init_audio_isoc(struct em28xx *dev)
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;
} else {
@ -345,7 +366,6 @@ static int em28xx_init_audio_isoc(struct em28xx *dev)
return 0;
}
static int em28xx_cmd(struct em28xx *dev, int cmd, int arg)
{
switch (cmd) {
@ -357,7 +377,8 @@ static int em28xx_cmd(struct em28xx *dev, int cmd,int arg)
dev->adev->capture_stream = STREAM_OFF;
em28xx_isoc_audio_deinit(dev);
} else {
printk("An underrun occured very likely... ignoring it\n");
printk
("An underrun occured very likely... ignoring it\n");
}
return 0;
default:
@ -365,7 +386,8 @@ static int em28xx_cmd(struct em28xx *dev, int cmd,int arg)
}
}
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;