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-rw-r--r--drivers/dma/sh/shdma.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/dma/sh/shdma.c b/drivers/dma/sh/shdma.c
index 027c9be..f41bcc5 100644
--- a/drivers/dma/sh/shdma.c
+++ b/drivers/dma/sh/shdma.c
@@ -381,6 +381,17 @@ static bool sh_dmae_chan_irq(struct shdma_chan *schan, int irq)
return true;
}
+static size_t sh_dmae_get_partial(struct shdma_chan *schan,
+ struct shdma_desc *sdesc)
+{
+ struct sh_dmae_chan *sh_chan = container_of(schan, struct sh_dmae_chan,
+ shdma_chan);
+ struct sh_dmae_desc *sh_desc = container_of(sdesc,
+ struct sh_dmae_desc, shdma_desc);
+ return (sh_desc->hw.tcr - sh_dmae_readl(sh_chan, TCR)) <<
+ sh_chan->xmit_shift;
+}
+
/* Called from error IRQ or NMI */
static bool sh_dmae_reset(struct sh_dmae_device *shdev)
{
@@ -632,6 +643,7 @@ static const struct shdma_ops sh_dmae_shdma_ops = {
.start_xfer = sh_dmae_start_xfer,
.embedded_desc = sh_dmae_embedded_desc,
.chan_irq = sh_dmae_chan_irq,
+ .get_partial = sh_dmae_get_partial,
};
static int __devinit sh_dmae_probe(struct platform_device *pdev)
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