Re: [PATCH v2] dmaengine: ti: k3-udma: Fix BCHAN count with UHC and HC channels

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hello Jai,

On 07/06/24 23:41, Jai Luthra wrote:
From: Vignesh Raghavendra <vigneshr@xxxxxx>

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: 8844898028d4 ("dmaengine: ti: k3-udma: Add support for BCDMA channel TPL handling")
Signed-off-by: Vignesh Raghavendra <vigneshr@xxxxxx>
Signed-off-by: Jai Luthra <j-luthra@xxxxxx>

Tested audio on J722S platform on top of this patch.
McASP in J722S-EVM uses BCDMA.

Tested-by: Jayesh Choudhary <j-choudhary@xxxxxx>

---
Changes in v2:
- Add all BCHANs in a single operation
- Update the Fixes tag to the commit adding TPL support
- Link to v1: https://lore.kernel.org/r/20240604-bcdma_chan_cnt-v1-1-1e8932f68dca@xxxxxx
---
  drivers/dma/ti/k3-udma.c | 4 +++-
  1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c
index 6400d06588a2..df507d96660b 100644
--- a/drivers/dma/ti/k3-udma.c
+++ b/drivers/dma/ti/k3-udma.c
@@ -4472,7 +4472,9 @@ 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;

---
base-commit: d97496ca23a2d4ee80b7302849404859d9058bcd
change-id: 20240604-bcdma_chan_cnt-bbc6c0c95259

Best regards,

Thanks,
Jayesh




[Index of Archives]     [Linux Kernel]     [Linux ARM (vger)]     [Linux ARM MSM]     [Linux Omap]     [Linux Arm]     [Linux Tegra]     [Fedora ARM]     [Linux for Samsung SOC]     [eCos]     [Linux PCI]     [Linux Fastboot]     [Gcc Help]     [Git]     [DCCP]     [IETF Announce]     [Security]     [Linux MIPS]     [Yosemite Campsites]

  Powered by Linux