From 4312a1dfca26a0b5c30ac6890b0078e8d31ff6bf Mon Sep 17 00:00:00 2001
From: MD Danish Anwar <danishanwar@ti.com>
Date: Tue, 30 Jan 2024 11:48:04 +0530
Subject: [PATCH] dma: ti: k3-udma: Use ring_idx to pair k3 nav rings
Use ring_idx to pair rings. ring_idx will be same as tx flow_id for all
non-negative flow_ids. For negative flow_ids, ring_idx will be tchan->id
added with bchan_cnt.
Link: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/dma/ti/k3-udma.c?h=v6.8-rc2#n1686
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Reviewed-by: Ravi Gunasekaran <r-gunasekaran@ti.com>
---
drivers/dma/ti/k3-udma.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c
index 8a62d63dfe..eea9ec9659 100644
--- a/drivers/dma/ti/k3-udma.c
+++ b/drivers/dma/ti/k3-udma.c
@@ -876,13 +876,20 @@ static int udma_alloc_tx_resources(struct udma_chan *uc)
{
struct k3_nav_ring_cfg ring_cfg;
struct udma_dev *ud = uc->ud;
- int ret;
+ struct udma_tchan *tchan;
+ int ring_idx, ret;
ret = udma_get_tchan(uc);
if (ret)
return ret;
- ret = k3_nav_ringacc_request_rings_pair(ud->ringacc, uc->tchan->id, -1,
+ tchan = uc->tchan;
+ if (tchan->tflow_id >= 0)
+ ring_idx = tchan->tflow_id;
+ else
+ ring_idx = ud->bchan_cnt + tchan->id;
+
+ ret = k3_nav_ringacc_request_rings_pair(ud->ringacc, ring_idx, -1,
&uc->tchan->t_ring,
&uc->tchan->tc_ring);
if (ret) {
--
2.39.5