* Peter Ujfalusi <peter.ujfalusi@xxxxxx> [140313 00:52]:
> Hi Tony,
>
> On 03/12/2014 07:37 PM, Tony Lindgren wrote:
> > * Peter Ujfalusi <peter.ujfalusi@xxxxxx> [140307 05:39]:
> >> With the callback implemented omap-dma can provide information to client
> >> drivers regarding to supported address widths, directions, residue
> >> granularity, etc.
> >
> > This may need some testing against linux next with Russell's
> > omap-dma.c clean-up series merged there. Peter, care to check
> > if this patch is still valid against linux next?
>
> The patch applies cleanly on top of linux-next fetched yesterday and I see
> Russell's patches underneath.
OK thanks for testing:
Acked-by: Tony Lindgren <tony@xxxxxxxxxxx>
> > Regards,
> >
> > Tony
> >
> >> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
> >> ---
> >> drivers/dma/omap-dma.c | 18 ++++++++++++++++++
> >> 1 file changed, 18 insertions(+)
> >>
> >> diff --git a/drivers/dma/omap-dma.c b/drivers/dma/omap-dma.c
> >> index 64ceca2920b8..b19f04f4390b 100644
> >> --- a/drivers/dma/omap-dma.c
> >> +++ b/drivers/dma/omap-dma.c
> >> @@ -1088,6 +1088,23 @@ static void omap_dma_free(struct omap_dmadev *od)
> >> }
> >> }
> >>
> >> +#define OMAP_DMA_BUSWIDTHS (BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) | \
> >> + BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) | \
> >> + BIT(DMA_SLAVE_BUSWIDTH_4_BYTES))
> >> +
> >> +static int omap_dma_device_slave_caps(struct dma_chan *dchan,
> >> + struct dma_slave_caps *caps)
> >> +{
> >> + caps->src_addr_widths = OMAP_DMA_BUSWIDTHS;
> >> + caps->dstn_addr_widths = OMAP_DMA_BUSWIDTHS;
> >> + caps->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
> >> + caps->cmd_pause = true;
> >> + caps->cmd_terminate = true;
> >> + caps->residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
> >> +
> >> + return 0;
> >> +}
> >> +
> >> static int omap_dma_probe(struct platform_device *pdev)
> >> {
> >> struct omap_dmadev *od;
> >> @@ -1118,6 +1135,7 @@ static int omap_dma_probe(struct platform_device *pdev)
> >> od->ddev.device_prep_slave_sg = omap_dma_prep_slave_sg;
> >> od->ddev.device_prep_dma_cyclic = omap_dma_prep_dma_cyclic;
> >> od->ddev.device_control = omap_dma_control;
> >> + od->ddev.device_slave_caps = omap_dma_device_slave_caps;
> >> od->ddev.dev = &pdev->dev;
> >> INIT_LIST_HEAD(&od->ddev.channels);
> >> INIT_LIST_HEAD(&od->pending);
> >> --
> >> 1.9.0
> >>
>
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