Commit 372f8b36 authored by Vignesh Raghavendra's avatar Vignesh Raghavendra Committed by Vinod Koul
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dmaengine: ti: k3-udma: Fix BCHAN count with UHC and HC channels 



Unlike other channel counts in CAPx registers, BCDMA BCHAN CNT doesn't
include UHC and HC BC channels. So include them explicitly to arrive at
total BC channel in the instance.

Fixes: 88448980 ("dmaengine: ti: k3-udma: Add support for BCDMA channel TPL handling")
Signed-off-by: default avatarVignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: default avatarJai Luthra <j-luthra@ti.com>
Tested-by: default avatarJayesh Choudhary <j-choudhary@ti.com>
Link: https://lore.kernel.org/r/20240607-bcdma_chan_cnt-v2-1-bf1a55529d91@ti.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent 0e53aa34

drivers/dma/ti/k3-udma.c

+3 −1
Original line number Diff line number Diff line
@@ -4473,7 +4473,9 @@ static int udma_get_mmrs(struct platform_device *pdev, struct udma_dev *ud) 
		ud->rchan_cnt = UDMA_CAP2_RCHAN_CNT(cap2);

		break;

	case DMA_TYPE_BCDMA:

		ud->bchan_cnt = BCDMA_CAP2_BCHAN_CNT(cap2);

		ud->bchan_cnt = BCDMA_CAP2_BCHAN_CNT(cap2) +

				BCDMA_CAP3_HBCHAN_CNT(cap3) +

				BCDMA_CAP3_UBCHAN_CNT(cap3);

		ud->tchan_cnt = BCDMA_CAP2_TCHAN_CNT(cap2);

		ud->rchan_cnt = BCDMA_CAP2_RCHAN_CNT(cap2);

		ud->rflow_cnt = ud->rchan_cnt;