| Message ID | 20250220150110.738619-6-fabrizio.castro.jz@renesas.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Add DMAC support to the RZ/V2H(P) | expand |
On Thu, Feb 20, 2025 at 3:02 PM Fabrizio Castro <fabrizio.castro.jz@renesas.com> wrote: > > dma_request_channel() calls into __dma_request_channel() with > NULL as value for np, which won't allow for the selection of the > correct DMAC when multiple DMACs are available. > > Switch to using __dma_request_channel() directly so that we can > choose the desired DMA for the channel. This is in preparation > of adding DMAC support for the Renesas RZ/V2H(P) and similar SoCs. > > Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com> > --- > v3->v4: > * No change. > v2->v3: > * Added () for calls in changelog. > v1->v2: > * No change. > --- > drivers/dma/sh/rz-dmac.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Cheers, Prabhakar > diff --git a/drivers/dma/sh/rz-dmac.c b/drivers/dma/sh/rz-dmac.c > index 9235db551026..d7a4ce28040b 100644 > --- a/drivers/dma/sh/rz-dmac.c > +++ b/drivers/dma/sh/rz-dmac.c > @@ -748,7 +748,8 @@ static struct dma_chan *rz_dmac_of_xlate(struct of_phandle_args *dma_spec, > dma_cap_zero(mask); > dma_cap_set(DMA_SLAVE, mask); > > - return dma_request_channel(mask, rz_dmac_chan_filter, dma_spec); > + return __dma_request_channel(&mask, rz_dmac_chan_filter, dma_spec, > + ofdma->of_node); > } > > /* > -- > 2.34.1 > >
diff --git a/drivers/dma/sh/rz-dmac.c b/drivers/dma/sh/rz-dmac.c index 9235db551026..d7a4ce28040b 100644 --- a/drivers/dma/sh/rz-dmac.c +++ b/drivers/dma/sh/rz-dmac.c @@ -748,7 +748,8 @@ static struct dma_chan *rz_dmac_of_xlate(struct of_phandle_args *dma_spec, dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask); - return dma_request_channel(mask, rz_dmac_chan_filter, dma_spec); + return __dma_request_channel(&mask, rz_dmac_chan_filter, dma_spec, + ofdma->of_node); } /*
dma_request_channel() calls into __dma_request_channel() with NULL as value for np, which won't allow for the selection of the correct DMAC when multiple DMACs are available. Switch to using __dma_request_channel() directly so that we can choose the desired DMA for the channel. This is in preparation of adding DMAC support for the Renesas RZ/V2H(P) and similar SoCs. Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com> --- v3->v4: * No change. v2->v3: * Added () for calls in changelog. v1->v2: * No change. --- drivers/dma/sh/rz-dmac.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)