diff options
Diffstat (limited to 'drivers/dma/sh/rcar-dmac.c')
| -rw-r--r-- | drivers/dma/sh/rcar-dmac.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c index d3b7388645bc..be82d6997a55 100644 --- a/drivers/dma/sh/rcar-dmac.c +++ b/drivers/dma/sh/rcar-dmac.c @@ -834,6 +834,17 @@ static void rcar_dmac_stop_all_chan(struct rcar_dmac *dmac) } } +static int rcar_dmac_chan_pause(struct dma_chan *chan) +{ + unsigned long flags; + struct rcar_dmac_chan *rchan = to_rcar_dmac_chan(chan); + + spin_lock_irqsave(&rchan->lock, flags); + rcar_dmac_clear_chcr_de(rchan); + spin_unlock_irqrestore(&rchan->lock, flags); + + return 0; +} /* ----------------------------------------------------------------------------- * Descriptors preparation @@ -1864,6 +1875,7 @@ static int rcar_dmac_probe(struct platform_device *pdev) engine->device_prep_slave_sg = rcar_dmac_prep_slave_sg; engine->device_prep_dma_cyclic = rcar_dmac_prep_dma_cyclic; engine->device_config = rcar_dmac_device_config; + engine->device_pause = rcar_dmac_chan_pause; engine->device_terminate_all = rcar_dmac_chan_terminate_all; engine->device_tx_status = rcar_dmac_tx_status; engine->device_issue_pending = rcar_dmac_issue_pending; |