diff options
Diffstat (limited to 'drivers/dma/sh/shdma.c')
| -rw-r--r-- | drivers/dma/sh/shdma.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/dma/sh/shdma.c b/drivers/dma/sh/shdma.c index 027c9be97654..f41bcc5267fd 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) |