On Mon, Sep 3, 2012 at 4:16 PM, Andy Shevchenko <[email protected]> wrote: > There is slave_id field in the generic slave config structure that is > dedicated > for the uniq slave number. In our case we have the request lines wired to the > certain hardware. Therefore the number of the request line is uniq and could > be > used as slave_id. It allows us in some cases to drop out the usage of the > custom slave config structure. > > Signed-off-by: Andy Shevchenko <[email protected]> > --- > drivers/dma/dw_dmac.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c > index f0c9403..7a67673 100644 > --- a/drivers/dma/dw_dmac.c > +++ b/drivers/dma/dw_dmac.c > @@ -187,6 +187,11 @@ static void dwc_initialize(struct dw_dma_chan *dwc) > > cfghi = dws->cfg_hi; > cfglo |= dws->cfg_lo & ~DWC_CFGL_CH_PRIOR_MASK; > + } else { > + if (dwc->dma_sconfig.direction == DMA_MEM_TO_DEV) > + cfghi = DWC_CFGH_DST_PER(dwc->dma_sconfig.slave_id); > + else if (dwc->dma_sconfig.direction == DMA_DEV_TO_MEM) > + cfghi = DWC_CFGH_SRC_PER(dwc->dma_sconfig.slave_id); > } > > channel_writel(dwc, CFG_LO, cfglo);
Acked-by: Viresh Kumar <[email protected]> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
