diff options
Diffstat (limited to 'drivers/dma/dw_dmac.c')
| -rw-r--r-- | drivers/dma/dw_dmac.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c index f413e123405a..318a342fc7ec 100644 --- a/drivers/dma/dw_dmac.c +++ b/drivers/dma/dw_dmac.c @@ -901,8 +901,11 @@ static int dwc_alloc_chan_resources(struct dma_chan *chan) BUG_ON(!dws->dma_dev || dws->dma_dev != dw->dma.dev); cfghi = dws->cfg_hi; - cfglo = dws->cfg_lo; + cfglo = dws->cfg_lo & ~DWC_CFGL_CH_PRIOR_MASK; } + + cfglo |= DWC_CFGL_CH_PRIOR(dwc->priority); + channel_writel(dwc, CFG_LO, cfglo); channel_writel(dwc, CFG_HI, cfghi); @@ -1325,6 +1328,12 @@ static int __init dw_probe(struct platform_device *pdev) else list_add(&dwc->chan.device_node, &dw->dma.channels); + /* 7 is highest priority & 0 is lowest. */ + if (pdata->chan_priority == CHAN_PRIORITY_ASCENDING) + dwc->priority = 7 - i; + else + dwc->priority = i; + dwc->ch_regs = &__dw_regs(dw)->CHAN[i]; spin_lock_init(&dwc->lock); dwc->mask = 1 << i; |