int au1000_dma_read_proc(char *buf, char **start, off_t fpos,
int length, int *eof, void *data)
{
int i, len = 0;
struct dma_chan *chan;
for (i = 0; i < NUM_AU1000_DMA_CHANNELS; i++) {
chan = get_dma_chan(i);
if (chan != NULL)
len += sprintf(buf + len, "%2d: %s\n",
i, chan->dev_str);
}
if (fpos >= len) {
*start = buf;
*eof = 1;
return 0;
}
*start = buf + fpos;
len -= fpos;
if (len > length)
return length;
*eof = 1;
return len;
}
void free_au1000_dma(unsigned int dmanr)
{
struct dma_chan *chan = get_dma_chan(dmanr);
if (!chan) {
printk("Trying to free DMA%d\n", dmanr);
return;
}
disable_dma(dmanr);
if (chan->irq)
free_irq(chan->irq, chan->irq_dev);
chan->irq = 0;
chan->irq_dev = NULL;
chan->dev_id = -1;
}
