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dmaengine: sh: rz-dmac: Allow for multiple DMACs

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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>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20250423143422.3747702-5-fabrizio.castro.jz@renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Fabrizio Castro
2025-04-23 15:34:20 +01:00
committed by Vinod Koul
parent 9002b75aa8
commit 056a8aac1f
1 changed files with 2 additions and 1 deletions
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3
drivers/dma/sh/rz-dmac.c
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@@ -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);
}
/*