On Fri, 2020-06-19 at 11:39 +0200, Matthias Brugger wrote:
>
> On 19/06/2020 10:05, EastL wrote:
> > This patch add dma mask for capability.
> >
> > Signed-off-by: EastL <EastL.Lee@xxxxxxxxxxxx>
> > ---
> > drivers/dma/mediatek/mtk-cqdma.c | 17 +++++++++++++++++
> > 1 file changed, 17 insertions(+)
> >
> > diff --git a/drivers/dma/mediatek/mtk-cqdma.c b/drivers/dma/mediatek/mtk-cqdma.c
> > index 905bbcb..ed33c64 100644
> > --- a/drivers/dma/mediatek/mtk-cqdma.c
> > +++ b/drivers/dma/mediatek/mtk-cqdma.c
> > @@ -117,6 +117,7 @@ struct mtk_cqdma_vchan {
> > * @clk: The clock that device internal is using
> > * @dma_requests: The number of VCs the device supports to
> > * @dma_channels: The number of PCs the device supports to
> > + * @dma_mask: A mask for DMA capability
> > * @vc: The pointer to all available VCs
> > * @pc: The pointer to all the underlying PCs
> > */
> > @@ -126,6 +127,7 @@ struct mtk_cqdma_device {
> >
> > u32 dma_requests;
> > u32 dma_channels;
> > + u32 dma_mask;
> > struct mtk_cqdma_vchan *vc;
> > struct mtk_cqdma_pchan **pc;
> > };
> > @@ -607,6 +609,21 @@ static int mtk_cqdma_probe(struct platform_device *pdev)
> > cqdma->dma_channels = MTK_CQDMA_NR_PCHANS;
> > }
> >
> > + if (pdev->dev.of_node)
> > + err = of_property_read_u32(pdev->dev.of_node,
> > + "dma-channel-mask",
> > + &cqdma->dma_mask);
> > + if (err) {
> > + dev_warn(&pdev->dev,
> > + "Using 0 as missing dma-channel-mask property\n");
> > + cqdma->dma_mask = 0;
> > + }
> > +
> > + if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(cqdma->dma_mask))) {
> > + dev_warn(&pdev->dev, "DMA set mask fail\n");
>
> fail -> failed
>
> With this:
> Reviewed-by: Matthias Brugger <matthias.bgg@xxxxxxxxx>
OK.
>
> > + return -EINVAL;
> > + }
> > +
> > cqdma->pc = devm_kcalloc(&pdev->dev, cqdma->dma_channels,
> > sizeof(*cqdma->pc), GFP_KERNEL);
> > if (!cqdma->pc)
> >
