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.
Signed-off-by: MD Danish Anwar danishanwar@ti.com --- Changes from v3 to v4: *) No functional change. Splitted the patch out of the series as suggested by Nishant.
v3: https://lore.kernel.org/all/20240124064930.1787929-2-danishanwar@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) {