/*
* copy to user
*/
static int
snd_nm256_capture_copy(struct snd_pcm_substream *substream,
int channel, /* not used (interleaved data) */
snd_pcm_uframes_t pos,
void __user *dst,
snd_pcm_uframes_t count)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct nm256_stream *s = runtime->private_data;
count = frames_to_bytes(runtime, count);
pos = frames_to_bytes(runtime, pos);
if (copy_to_user_fromio(dst, s->bufptr + pos, count))
return -EFAULT;
return 0;
}
/*
mixart_BA1 proc interface for BAR 1 - read callback
*/
static long snd_mixart_BA1_read(snd_info_entry_t *entry, void *file_private_data,
struct file *file, char __user *buf,
unsigned long count, unsigned long pos)
{
mixart_mgr_t *mgr = entry->private_data;
count = count & ~3; /* make sure the read size is a multiple of 4 bytes */
if(count <= 0)
return 0;
if(pos + count > MIXART_BA1_SIZE)
count = (long)(MIXART_BA1_SIZE - pos);
if(copy_to_user_fromio(buf, MIXART_REG( mgr, pos ), count))
return -EFAULT;
return count;
}
/*
mixart_BA1 proc interface for BAR 1 - read callback
*/
static long snd_mixart_BA1_read(struct snd_info_entry *entry, void *file_private_data,
struct file *file, char __user *buf,
unsigned long count, unsigned long pos)
{
struct mixart_mgr *mgr = entry->private_data;
unsigned long maxsize;
if (pos > MIXART_BA1_SIZE)
return 0;
maxsize = MIXART_BA1_SIZE - pos;
if (count > maxsize)
count = maxsize;
count = count & ~3; /* make sure the read size is a multiple of 4 bytes */
if (copy_to_user_fromio(buf, MIXART_REG(mgr, pos), count))
return -EFAULT;
return count;
}
