diff options
Diffstat (limited to 'drivers/dma/sh')
| -rw-r--r-- | drivers/dma/sh/rcar-dmac.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c index dd59fa19a40c..deda5ca6dcd7 100644 --- a/drivers/dma/sh/rcar-dmac.c +++ b/drivers/dma/sh/rcar-dmac.c @@ -336,6 +336,17 @@ static void rcar_dmac_chan_write(struct rcar_dmac_chan *chan, u32 reg, u32 data) writel(data, chan->iomem + reg); } +static void rcar_dmac_chan_clear(struct rcar_dmac *dmac, + struct rcar_dmac_chan *chan) +{ + rcar_dmac_write(dmac, RCAR_DMACHCLR, BIT(chan->index)); +} + +static void rcar_dmac_chan_clear_all(struct rcar_dmac *dmac) +{ + rcar_dmac_write(dmac, RCAR_DMACHCLR, dmac->channels_mask); +} + /* ----------------------------------------------------------------------------- * Initialization and configuration */ @@ -451,7 +462,7 @@ static int rcar_dmac_init(struct rcar_dmac *dmac) u16 dmaor; /* Clear all channels and enable the DMAC globally. */ - rcar_dmac_write(dmac, RCAR_DMACHCLR, dmac->channels_mask); + rcar_dmac_chan_clear_all(dmac); rcar_dmac_write(dmac, RCAR_DMAOR, RCAR_DMAOR_PRI_FIXED | RCAR_DMAOR_DME); @@ -1566,7 +1577,7 @@ static irqreturn_t rcar_dmac_isr_channel(int irq, void *dev) * because channel is already stopped in error case. * We need to clear register and check DE bit as recovery. */ - rcar_dmac_write(dmac, RCAR_DMACHCLR, 1 << chan->index); + rcar_dmac_chan_clear(dmac, chan); rcar_dmac_chcr_de_barrier(chan); reinit = true; goto spin_lock_end; |