int s3c2410_dma_ctrl(unsigned int channel, enum s3c2410_chan_op op)
{
struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel);
WARN_ON(!chan);
if (!chan)
return -EINVAL;
switch (op) {
case S3C2410_DMAOP_START:
return s3c64xx_dma_start(chan);
case S3C2410_DMAOP_STOP:
return s3c64xx_dma_stop(chan);
case S3C2410_DMAOP_FLUSH:
return s3c64xx_dma_flush(chan);
/* belive PAUSE/RESUME are no-ops */
case S3C2410_DMAOP_PAUSE:
case S3C2410_DMAOP_RESUME:
case S3C2410_DMAOP_STARTED:
case S3C2410_DMAOP_TIMEOUT:
return 0;
}
return -ENOENT;
}
static int s3c64xx_dma_suspend(struct device *dev)
{
struct s3c64xx_dmac *dmac = dev_get_drvdata(dev);
int i;
dev_dbg(dev, "suspend\n");
for (i = 0; i < 8; ++i)
s3c64xx_dma_flush(&dmac->channels[i]);
writel(0, dmac->regs + PL080_CONFIG);
clk_disable(dmac->clk);
return 0;
}
