soc: ti: k3-ringacc: add request pair of rings api.

Add new API k3_ringacc_request_rings_pair() to request pair of rings at
once, as in the most cases Rings are used with DMA channels, which need to
request pair of rings - one to feed DMA with descriptors (TX/RX FDQ) and
one to receive completions (RX/TX CQ). This will allow to simplify Ringacc
API users.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>

diff --git a/drivers/soc/ti/k3-ringacc.c b/drivers/soc/ti/k3-ringacc.c
index 3d8e110..c9f0220 100644 (file)
--- a/drivers/soc/ti/k3-ringacc.c
+++ b/drivers/soc/ti/k3-ringacc.c
@@ -322,6 +322,30 @@ error:
 }
 EXPORT_SYMBOL_GPL(k3_ringacc_request_ring);
 
+int k3_ringacc_request_rings_pair(struct k3_ringacc *ringacc,
+                                 int fwd_id, int compl_id,
+                                 struct k3_ring **fwd_ring,
+                                 struct k3_ring **compl_ring)
+{
+       int ret = 0;
+
+       if (!fwd_ring || !compl_ring)
+               return -EINVAL;
+
+       *fwd_ring = k3_ringacc_request_ring(ringacc, fwd_id, 0);
+       if (!(*fwd_ring))
+               return -ENODEV;
+
+       *compl_ring = k3_ringacc_request_ring(ringacc, compl_id, 0);
+       if (!(*compl_ring)) {
+               k3_ringacc_ring_free(*fwd_ring);
+               ret = -ENODEV;
+       }
+
+       return ret;
+}
+EXPORT_SYMBOL_GPL(k3_ringacc_request_rings_pair);
+
 static void k3_ringacc_ring_reset_sci(struct k3_ring *ring)
 {
        struct k3_ringacc *ringacc = ring->parent;

diff --git a/include/linux/soc/ti/k3-ringacc.h b/include/linux/soc/ti/k3-ringacc.h
index 26f73df..7ac1154 100644 (file)
--- a/include/linux/soc/ti/k3-ringacc.h
+++ b/include/linux/soc/ti/k3-ringacc.h
@@ -107,6 +107,10 @@ struct k3_ringacc *of_k3_ringacc_get_by_phandle(struct device_node *np,
 struct k3_ring *k3_ringacc_request_ring(struct k3_ringacc *ringacc,
                                        int id, u32 flags);
 
+int k3_ringacc_request_rings_pair(struct k3_ringacc *ringacc,
+                                 int fwd_id, int compl_id,
+                                 struct k3_ring **fwd_ring,
+                                 struct k3_ring **compl_ring);
 /**
  * k3_ringacc_ring_reset - ring reset
  * @ring: pointer on Ring