On Wed May 20 17:30:10 2026 +0530, Pratyush Yadav wrote:
> With multiple contexts, there needs to be a different DMA channel for
> each context. Earlier, the DMA channel name was hard coded to "rx0" for
> the sake of simplicity. Generate the DMA channel name based on its index
> and get the channel corresponding to the context.
>
> Signed-off-by: Pratyush Yadav <[email protected]>
> Signed-off-by: Jai Luthra <[email protected]>
> Reviewed-by: Jacopo Mondi <[email protected]>
> Reviewed-by: Laurent Pinchart <[email protected]>
> Reviewed-by: Yemike Abhilash Chandra <[email protected]>
> Reviewed-by: Tomi Valkeinen <[email protected]>
> Signed-off-by: Rishikesh Donadkar <[email protected]>
> Signed-off-by: Sakari Ailus <[email protected]>
Patch committed.
Thanks,
Sakari Ailus
drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
index 4adfae425f19..c781b312cea8 100644
--- a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
+++ b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
@@ -1036,9 +1036,11 @@ static int ti_csi2rx_init_dma(struct ti_csi2rx_ctx *ctx)
struct dma_slave_config cfg = {
.src_addr_width = DMA_SLAVE_BUSWIDTH_16_BYTES,
};
+ char name[5];
int ret;
- ctx->dma.chan = dma_request_chan(ctx->csi->dev, "rx0");
+ snprintf(name, sizeof(name), "rx%u", ctx->idx);
+ ctx->dma.chan = dma_request_chan(ctx->csi->dev, name);
if (IS_ERR(ctx->dma.chan))
return PTR_ERR(ctx->dma.chan);
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