Commit 43148b1c authored by Grygorii Strashko's avatar Grygorii Strashko Committed by Santosh Shilimkar
Browse files

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: default avatarGrygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: default avatarSantosh Shilimkar <santosh.shilimkar@oracle.com>
parent 175e663f

drivers/soc/ti/k3-ringacc.c

+24 −0
Original line number Diff line number Diff line
@@ -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;

include/linux/soc/ti/k3-ringacc.h

+4 −0
Original line number Diff line number Diff line
@@ -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

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